diff options
Diffstat (limited to 'arch/x86')
76 files changed, 871 insertions, 248 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 90b562a34d65..c1f9b3cf437c 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -14,7 +14,6 @@ config X86_32 select ARCH_WANT_IPC_PARSE_VERSION select CLKSRC_I8253 select CLONE_BACKWARDS - select HAVE_GENERIC_DMA_COHERENT select MODULES_USE_ELF_REL select OLD_SIGACTION diff --git a/arch/x86/Makefile b/arch/x86/Makefile index 9c5a67d1b9c1..2d8b9d8ca4f8 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -187,7 +187,6 @@ cfi-sigframe := $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc, cfi-sections := $(call as-instr,.cfi_sections .debug_frame,-DCONFIG_AS_CFI_SECTIONS=1) # does binutils support specific instructions? -asinstr := $(call as-instr,fxsaveq (%rax),-DCONFIG_AS_FXSAVEQ=1) asinstr += $(call as-instr,pshufb %xmm0$(comma)%xmm0,-DCONFIG_AS_SSSE3=1) avx_instr := $(call as-instr,vxorps %ymm0$(comma)%ymm1$(comma)%ymm2,-DCONFIG_AS_AVX=1) avx2_instr :=$(call as-instr,vpbroadcastb %xmm0$(comma)%ymm1,-DCONFIG_AS_AVX2=1) @@ -217,6 +216,11 @@ KBUILD_CFLAGS += -fno-asynchronous-unwind-tables # Avoid indirect branches in kernel to deal with Spectre ifdef CONFIG_RETPOLINE KBUILD_CFLAGS += $(RETPOLINE_CFLAGS) + # Additionally, avoid generating expensive indirect jumps which + # are subject to retpolines for small number of switch cases. + # clang turns off jump table generation by default when under + # retpoline builds, however, gcc does not for x86. + KBUILD_CFLAGS += $(call cc-option,--param=case-values-threshold=20) endif archscripts: scripts_basic diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile index 9b5adae9cc40..e2839b5c246c 100644 --- a/arch/x86/boot/Makefile +++ b/arch/x86/boot/Makefile @@ -100,7 +100,7 @@ $(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE AFLAGS_header.o += -I$(objtree)/$(obj) $(obj)/header.o: $(obj)/zoffset.h -LDFLAGS_setup.elf := -T +LDFLAGS_setup.elf := -m elf_i386 -T $(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE $(call if_changed,ld) diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile index f0515ac895a4..6b84afdd7538 100644 --- a/arch/x86/boot/compressed/Makefile +++ b/arch/x86/boot/compressed/Makefile @@ -84,6 +84,8 @@ ifdef CONFIG_X86_64 vmlinux-objs-y += $(obj)/pgtable_64.o endif +vmlinux-objs-$(CONFIG_ACPI) += $(obj)/acpi.o + $(obj)/eboot.o: KBUILD_CFLAGS += -fshort-wchar -mno-red-zone vmlinux-objs-$(CONFIG_EFI_STUB) += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o \ diff --git a/arch/x86/boot/compressed/acpi.c b/arch/x86/boot/compressed/acpi.c new file mode 100644 index 000000000000..0ef4ad55b29b --- /dev/null +++ b/arch/x86/boot/compressed/acpi.c @@ -0,0 +1,338 @@ +// SPDX-License-Identifier: GPL-2.0 +#define BOOT_CTYPE_H +#include "misc.h" +#include "error.h" +#include "../string.h" + +#include <linux/numa.h> +#include <linux/efi.h> +#include <asm/efi.h> + +/* + * Longest parameter of 'acpi=' is 'copy_dsdt', plus an extra '\0' + * for termination. + */ +#define MAX_ACPI_ARG_LENGTH 10 + +/* + * Immovable memory regions representation. Max amount of memory regions is + * MAX_NUMNODES*2. + */ +struct mem_vector immovable_mem[MAX_NUMNODES*2]; + +/* + * Max length of 64-bit hex address string is 19, prefix "0x" + 16 hex + * digits, and '\0' for termination. + */ +#define MAX_ADDR_LEN 19 + +static acpi_physical_address get_acpi_rsdp(void) +{ + acpi_physical_address addr = 0; + +#ifdef CONFIG_KEXEC + char val[MAX_ADDR_LEN] = { }; + int ret; + + ret = cmdline_find_option("acpi_rsdp", val, MAX_ADDR_LEN); + if (ret < 0) + return 0; + + if (kstrtoull(val, 16, &addr)) + return 0; +#endif + return addr; +} + +/* Search EFI system tables for RSDP. */ +static acpi_physical_address efi_get_rsdp_addr(void) +{ + acpi_physical_address rsdp_addr = 0; + +#ifdef CONFIG_EFI + unsigned long systab, systab_tables, config_tables; + unsigned int nr_tables; + struct efi_info *ei; + bool efi_64; + int size, i; + char *sig; + + ei = &boot_params->efi_info; + sig = (char *)&ei->efi_loader_signature; + + if (!strncmp(sig, EFI64_LOADER_SIGNATURE, 4)) { + efi_64 = true; + } else if (!strncmp(sig, EFI32_LOADER_SIGNATURE, 4)) { + efi_64 = false; + } else { + debug_putstr("Wrong EFI loader signature.\n"); + return 0; + } + + /* Get systab from boot params. */ +#ifdef CONFIG_X86_64 + systab = ei->efi_systab | ((__u64)ei->efi_systab_hi << 32); +#else + if (ei->efi_systab_hi || ei->efi_memmap_hi) { + debug_putstr("Error getting RSDP address: EFI system table located above 4GB.\n"); + return 0; + } + systab = ei->efi_systab; +#endif + if (!systab) + error("EFI system table not found."); + + /* Handle EFI bitness properly */ + if (efi_64) { + efi_system_table_64_t *stbl = (efi_system_table_64_t *)systab; + + config_tables = stbl->tables; + nr_tables = stbl->nr_tables; + size = sizeof(efi_config_table_64_t); + } else { + efi_system_table_32_t *stbl = (efi_system_table_32_t *)systab; + + config_tables = stbl->tables; + nr_tables = stbl->nr_tables; + size = sizeof(efi_config_table_32_t); + } + + if (!config_tables) + error("EFI config tables not found."); + + /* Get EFI tables from systab. */ + for (i = 0; i < nr_tables; i++) { + acpi_physical_address table; + efi_guid_t guid; + + config_tables += size; + + if (efi_64) { + efi_config_table_64_t *tbl = (efi_config_table_64_t *)config_tables; + + guid = tbl->guid; + table = tbl->table; + + if (!IS_ENABLED(CONFIG_X86_64) && table >> 32) { + debug_putstr("Error getting RSDP address: EFI config table located above 4GB.\n"); + return 0; + } + } else { + efi_config_table_32_t *tbl = (efi_config_table_32_t *)config_tables; + + guid = tbl->guid; + table = tbl->table; + } + + if (!(efi_guidcmp(guid, ACPI_TABLE_GUID))) + rsdp_addr = table; + else if (!(efi_guidcmp(guid, ACPI_20_TABLE_GUID))) + return table; + } +#endif + return rsdp_addr; +} + +static u8 compute_checksum(u8 *buffer, u32 length) +{ + u8 *end = buffer + length; + u8 sum = 0; + + while (buffer < end) + sum += *(buffer++); + + return sum; +} + +/* Search a block of memory for the RSDP signature. */ +static u8 *scan_mem_for_rsdp(u8 *start, u32 length) +{ + struct acpi_table_rsdp *rsdp; + u8 *address, *end; + + end = start + length; + + /* Search from given start address for the requested length */ + for (address = start; address < end; address += ACPI_RSDP_SCAN_STEP) { + /* + * Both RSDP signature and checksum must be correct. + * Note: Sometimes there exists more than one RSDP in memory; + * the valid RSDP has a valid checksum, all others have an + * invalid checksum. + */ + rsdp = (struct acpi_table_rsdp *)address; + + /* BAD Signature */ + if (!ACPI_VALIDATE_RSDP_SIG(rsdp->signature)) + continue; + + /* Check the standard checksum */ + if (compute_checksum((u8 *)rsdp, ACPI_RSDP_CHECKSUM_LENGTH)) + continue; + + /* Check extended checksum if table version >= 2 */ + if ((rsdp->revision >= 2) && + (compute_checksum((u8 *)rsdp, ACPI_RSDP_XCHECKSUM_LENGTH))) + continue; + + /* Signature and checksum valid, we have found a real RSDP */ + return address; + } + return NULL; +} + +/* Search RSDP address in EBDA. */ +static acpi_physical_address bios_get_rsdp_addr(void) +{ + unsigned long address; + u8 *rsdp; + + /* Get the location of the Extended BIOS Data Area (EBDA) */ + address = *(u16 *)ACPI_EBDA_PTR_LOCATION; + address <<= 4; + + /* + * Search EBDA paragraphs (EBDA is required to be a minimum of + * 1K length) + */ + if (address > 0x400) { + rsdp = scan_mem_for_rsdp((u8 *)address, ACPI_EBDA_WINDOW_SIZE); + if (rsdp) + return (acpi_physical_address)(unsigned long)rsdp; + } + + /* Search upper memory: 16-byte boundaries in E0000h-FFFFFh */ + rsdp = scan_mem_for_rsdp((u8 *) ACPI_HI_RSDP_WINDOW_BASE, + ACPI_HI_RSDP_WINDOW_SIZE); + if (rsdp) + return (acpi_physical_address)(unsigned long)rsdp; + + return 0; +} + +/* Return RSDP address on success, otherwise 0. */ +acpi_physical_address get_rsdp_addr(void) +{ + acpi_physical_address pa; + + pa = get_acpi_rsdp(); + + if (!pa) + pa = boot_params->acpi_rsdp_addr; + + if (!pa) + pa = efi_get_rsdp_addr(); + + if (!pa) + pa = bios_get_rsdp_addr(); + + return pa; +} + +#if defined(CONFIG_RANDOMIZE_BASE) && defined(CONFIG_MEMORY_HOTREMOVE) +/* Compute SRAT address from RSDP. */ +static unsigned long get_acpi_srat_table(void) +{ + unsigned long root_table, acpi_table; + struct acpi_table_header *header; + struct acpi_table_rsdp *rsdp; + u32 num_entries, size, len; + char arg[10]; + u8 *entry; + + rsdp = (struct acpi_table_rsdp *)(long)boot_params->acpi_rsdp_addr; + if (!rsdp) + return 0; + + /* Get ACPI root table from RSDP.*/ + if (!(cmdline_find_option("acpi", arg, sizeof(arg)) == 4 && + !strncmp(arg, "rsdt", 4)) && + rsdp->xsdt_physical_address && + rsdp->revision > 1) { + root_table = rsdp->xsdt_physical_address; + size = ACPI_XSDT_ENTRY_SIZE; + } else { + root_table = rsdp->rsdt_physical_address; + size = ACPI_RSDT_ENTRY_SIZE; + } + + if (!root_table) + return 0; + + header = (struct acpi_table_header *)root_table; + len = header->length; + if (len < sizeof(struct acpi_table_header) + size) + return 0; + + num_entries = (len - sizeof(struct acpi_table_header)) / size; + entry = (u8 *)(root_table + sizeof(struct acpi_table_header)); + + while (num_entries--) { + if (size == ACPI_RSDT_ENTRY_SIZE) + acpi_table = *(u32 *)entry; + else + acpi_table = *(u64 *)entry; + + if (acpi_table) { + header = (struct acpi_table_header *)acpi_table; + + if (ACPI_COMPARE_NAME(header->signature, ACPI_SIG_SRAT)) + return acpi_table; + } + entry += size; + } + return 0; +} + +/** + * count_immovable_mem_regions - Parse SRAT and cache the immovable + * memory regions into the immovable_mem array. + * + * Return the number of immovable memory regions on success, 0 on failure: + * + * - Too many immovable memory regions + * - ACPI off or no SRAT found + * - No immovable memory region found. + */ +int count_immovable_mem_regions(void) +{ + unsigned long table_addr, table_end, table; + struct acpi_subtable_header *sub_table; + struct acpi_table_header *table_header; + char arg[MAX_ACPI_ARG_LENGTH]; + int num = 0; + + if (cmdline_find_option("acpi", arg, sizeof(arg)) == 3 && + !strncmp(arg, "off", 3)) + return 0; + + table_addr = get_acpi_srat_table(); + if (!table_addr) + return 0; + + table_header = (struct acpi_table_header *)table_addr; + table_end = table_addr + table_header->length; + table = table_addr + sizeof(struct acpi_table_srat); + + while (table + sizeof(struct acpi_subtable_header) < table_end) { + sub_table = (struct acpi_subtable_header *)table; + if (sub_table->type == ACPI_SRAT_TYPE_MEMORY_AFFINITY) { + struct acpi_srat_mem_affinity *ma; + + ma = (struct acpi_srat_mem_affinity *)sub_table; + if (!(ma->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE) && ma->length) { + immovable_mem[num].start = ma->base_address; + immovable_mem[num].size = ma->length; + num++; + } + + if (num >= MAX_NUMNODES*2) { + debug_putstr("Too many immovable memory regions, aborting.\n"); + return 0; + } + } + table += sub_table->length; + } + return num; +} +#endif /* CONFIG_RANDOMIZE_BASE && CONFIG_MEMORY_HOTREMOVE */ diff --git a/arch/x86/boot/compressed/cmdline.c b/arch/x86/boot/compressed/cmdline.c index af6cda0b7900..f1add5d85da9 100644 --- a/arch/x86/boot/compressed/cmdline.c +++ b/arch/x86/boot/compressed/cmdline.c @@ -1,8 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 #include "misc.h" -#if CONFIG_EARLY_PRINTK || CONFIG_RANDOMIZE_BASE || CONFIG_X86_5LEVEL - static unsigned long fs; static inline void set_fs(unsigned long seg) { @@ -30,5 +28,3 @@ int cmdline_find_option_bool(const char *option) { return __cmdline_find_option_bool(get_cmd_line_ptr(), option); } - -#endif diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index f62e347862cc..fafb75c6c592 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -358,8 +358,11 @@ ENTRY(startup_64) * paging_prepare() sets up the trampoline and checks if we need to * enable 5-level paging. * - * Address of the trampoline is returned in RAX. - * Non zero RDX on return means we need to enable 5-level paging. + * paging_prepare() returns a two-quadword structure which lands + * into RDX:RAX: + * - Address of the trampoline is returned in RAX. + * - Non zero RDX means trampoline needs to enable 5-level + * paging. * * RSI holds real mode data and needs to be preserved across * this function call. @@ -565,7 +568,7 @@ adjust_got: * * RDI contains the return address (might be above 4G). * ECX contains the base address of the trampoline memory. - * Non zero RDX on return means we need to enable 5-level paging. + * Non zero RDX means trampoline needs to enable 5-level paging. */ ENTRY(trampoline_32bit_src) /* Set up data and stack segments */ @@ -655,8 +658,6 @@ no_longmode: .data gdt64: .word gdt_end - gdt - .long 0 - .word 0 .quad 0 gdt: .word gdt_end - gdt diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c index 9ed9709d9947..2e53c056ba20 100644 --- a/arch/x86/boot/compressed/kaslr.c +++ b/arch/x86/boot/compressed/kaslr.c @@ -87,10 +87,6 @@ static unsigned long get_boot_seed(void) #define KASLR_COMPRESSED_BOOT #include "../../lib/kaslr.c" -struct mem_vector { - unsigned long long start; - unsigned long long size; -}; /* Only supporting at most 4 unusable memmap regions with kaslr */ #define MAX_MEMMAP_REGIONS 4 @@ -101,6 +97,8 @@ static bool memmap_too_large; /* Store memory limit specified by "mem=nn[KMG]" or "memmap=nn[KMG]" */ static unsigned long long mem_limit = ULLONG_MAX; +/* Number of immovable memory regions */ +static int num_immovable_mem; enum mem_avoid_index { MEM_AVOID_ZO_RANGE = 0, @@ -417,6 +415,9 @@ static void mem_avoid_init(unsigned long input, unsigned long input_size, /* Mark the memmap regions we need to avoid */ handle_mem_options(); + /* Enumerate the immovable memory regions */ + num_immovable_mem = count_immovable_mem_regions(); + #ifdef CONFIG_X86_VERBOSE_BOOTUP /* Make sure video RAM can be used. */ add_identity_map(0, PMD_SIZE); @@ -572,9 +573,9 @@ static unsigned long slots_fetch_random(void) return 0; } -static void process_mem_region(struct mem_vector *entry, - unsigned long minimum, - unsigned long image_size) +static void __process_mem_region(struct mem_vector *entry, + unsigned long minimum, + unsigned long image_size) { struct mem_vector region, overlap; unsigned long start_orig, end; @@ -650,6 +651,56 @@ static void process_mem_region(struct mem_vector *entry, } } +static bool process_mem_region(struct mem_vector *region, + unsigned long long minimum, + unsigned long long image_size) +{ + int i; + /* + * If no immovable memory found, or MEMORY_HOTREMOVE disabled, + * use @region directly. + */ + if (!num_immovable_mem) { + __process_mem_region(region, minimum, image_size); + + if (slot_area_index == MAX_SLOT_AREA) { + debug_putstr("Aborted e820/efi memmap scan (slot_areas full)!\n"); + return 1; + } + return 0; + } + +#if defined(CONFIG_MEMORY_HOTREMOVE) && defined(CONFIG_ACPI) + /* + * If immovable memory found, filter the intersection between + * immovable memory and @region. + */ + for (i = 0; i < num_immovable_mem; i++) { + unsigned long long start, end, entry_end, region_end; + struct mem_vector entry; + + if (!mem_overlaps(region, &immovable_mem[i])) + continue; + + start = immovable_mem[i].start; + end = start + immovable_mem[i].size; + region_end = region->start + region->size; + + entry.start = clamp(region->start, start, end); + entry_end = clamp(region_end, start, end); + entry.size = entry_end - entry.start; + + __process_mem_region(&entry, minimum, image_size); + + if (slot_area_index == MAX_SLOT_AREA) { + debug_putstr("Aborted e820/efi memmap scan when walking immovable regions(slot_areas full)!\n"); + return 1; + } + } +#endif + return 0; +} + #ifdef CONFIG_EFI /* * Returns true if mirror region found (and must have been processed @@ -715,11 +766,8 @@ process_efi_entries(unsigned long minimum, unsigned long image_size) region.start = md->phys_addr; region.size = md->num_pages << EFI_PAGE_SHIFT; - process_mem_region(®ion, minimum, image_size); - if (slot_area_index == MAX_SLOT_AREA) { - debug_putstr("Aborted EFI scan (slot_areas full)!\n"); + if (process_mem_region(®ion, minimum, image_size)) break; - } } return true; } @@ -746,11 +794,8 @@ static void process_e820_entries(unsigned long minimum, continue; region.start = entry->addr; region.size = entry->size; - process_mem_region(®ion, minimum, image_size); - if (slot_area_index == MAX_SLOT_AREA) { - debug_putstr("Aborted e820 scan (slot_areas full)!\n"); + if (process_mem_region(®ion, minimum, image_size)) break; - } } } diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c index 8dd1d5ccae58..c0d6c560df69 100644 --- a/arch/x86/boot/compressed/misc.c +++ b/arch/x86/boot/compressed/misc.c @@ -351,6 +351,9 @@ asmlinkage __visible void *extract_kernel(void *rmode, memptr heap, /* Clear flags intended for solely in-kernel use. */ boot_params->hdr.loadflags &= ~KASLR_FLAG; + /* Save RSDP address for later use. */ + boot_params->acpi_rsdp_addr = get_rsdp_addr(); + sanitize_boot_params(boot_params); if (boot_params->screen_info.orig_video_mode == 7) { diff --git a/arch/x86/boot/compressed/misc.h b/arch/x86/boot/compressed/misc.h index a1d5918765f3..fd13655e0f9b 100644 --- a/arch/x86/boot/compressed/misc.h +++ b/arch/x86/boot/compressed/misc.h @@ -25,6 +25,9 @@ #include <asm/bootparam.h> #include <asm/bootparam_utils.h> +#define BOOT_CTYPE_H +#include <linux/acpi.h> + #define BOOT_BOOT_H #include "../ctype.h" @@ -63,12 +66,14 @@ static inline void debug_puthex(const char *s) #endif -#if CONFIG_EARLY_PRINTK || CONFIG_RANDOMIZE_BASE /* cmdline.c */ int cmdline_find_option(const char *option, char *buffer, int bufsize); int cmdline_find_option_bool(const char *option); -#endif +struct mem_vector { + unsigned long long start; + unsigned long long size; +}; #if CONFIG_RANDOMIZE_BASE /* kaslr.c */ @@ -116,3 +121,17 @@ static inline void console_init(void) void set_sev_encryption_mask(void); #endif + +/* acpi.c */ +#ifdef CONFIG_ACPI +acpi_physical_address get_rsdp_addr(void); +#else +static inline acpi_physical_address get_rsdp_addr(void) { return 0; } +#endif + +#if defined(CONFIG_RANDOMIZE_BASE) && defined(CONFIG_MEMORY_HOTREMOVE) && defined(CONFIG_ACPI) +extern struct mem_vector immovable_mem[MAX_NUMNODES*2]; +int count_immovable_mem_regions(void); +#else +static inline int count_immovable_mem_regions(void) { return 0; } +#endif diff --git a/arch/x86/boot/compressed/pgtable_64.c b/arch/x86/boot/compressed/pgtable_64.c index 9e2157371491..f8debf7aeb4c 100644 --- a/arch/x86/boot/compressed/pgtable_64.c +++ b/arch/x86/boot/compressed/pgtable_64.c @@ -1,5 +1,7 @@ +#include <linux/efi.h> #include <asm/e820/types.h> #include <asm/processor.h> +#include <asm/efi.h> #include "pgtable.h" #include "../string.h" @@ -37,9 +39,10 @@ int cmdline_find_option_bool(const char *option); static unsigned long find_trampoline_placement(void) { - unsigned long bios_start, ebda_start; + unsigned long bios_start = 0, ebda_start = 0; unsigned long trampoline_start; struct boot_e820_entry *entry; + char *signature; int i; /* @@ -47,8 +50,18 @@ static unsigned long find_trampoline_placement(void) * This code is based on reserve_bios_regions(). */ - ebda_start = *(unsigned short *)0x40e << 4; - bios_start = *(unsigned short *)0x413 << 10; + /* + * EFI systems may not provide legacy ROM. The memory may not be mapped + * at all. + * + * Only look for values in the legacy ROM for non-EFI system. + */ + signature = (char *)&boot_params->efi_info.efi_loader_signature; + if (strncmp(signature, EFI32_LOADER_SIGNATURE, 4) && + strncmp(signature, EFI64_LOADER_SIGNATURE, 4)) { + ebda_start = *(unsigned short *)0x40e << 4; + bios_start = *(unsigned short *)0x413 << 10; + } if (bios_start < BIOS_START_MIN || bios_start > BIOS_START_MAX) bios_start = BIOS_START_MAX; diff --git a/arch/x86/boot/compressed/vmlinux.lds.S b/arch/x86/boot/compressed/vmlinux.lds.S index f491bbde8493..508cfa6828c5 100644 --- a/arch/x86/boot/compressed/vmlinux.lds.S +++ b/arch/x86/boot/compressed/vmlinux.lds.S @@ -1,7 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0 */ #include <asm-generic/vmlinux.lds.h> -OUTPUT_FORMAT(CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT) +OUTPUT_FORMAT(CONFIG_OUTPUT_FORMAT) #undef i386 diff --git a/arch/x86/boot/setup.ld b/arch/x86/boot/setup.ld index 96a6c7563538..0149e41d42c2 100644 --- a/arch/x86/boot/setup.ld +++ b/arch/x86/boot/setup.ld @@ -3,7 +3,7 @@ * * Linker script for the i386 setup code */ -OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386") +OUTPUT_FORMAT("elf32-i386") OUTPUT_ARCH(i386) ENTRY(_start) diff --git a/arch/x86/boot/string.c b/arch/x86/boot/string.c index c4428a176973..315a67b8896b 100644 --- a/arch/x86/boot/string.c +++ b/arch/x86/boot/string.c @@ -13,10 +13,14 @@ */ #include <linux/types.h> +#include <linux/kernel.h> +#include <linux/errno.h> #include <asm/asm.h> #include "ctype.h" #include "string.h" +#define KSTRTOX_OVERFLOW (1U << 31) + /* * Undef these macros so that the functions that we provide * here will have the correct names regardless of how string.h @@ -187,3 +191,140 @@ char *strchr(const char *s, int c) return NULL; return (char *)s; } + +static inline u64 __div_u64_rem(u64 dividend, u32 divisor, u32 *remainder) +{ + union { + u64 v64; + u32 v32[2]; + } d = { dividend }; + u32 upper; + + upper = d.v32[1]; + d.v32[1] = 0; + if (upper >= divisor) { + d.v32[1] = upper / divisor; + upper %= divisor; + } + asm ("divl %2" : "=a" (d.v32[0]), "=d" (*remainder) : + "rm" (divisor), "0" (d.v32[0]), "1" (upper)); + return d.v64; +} + +static inline u64 __div_u64(u64 dividend, u32 divisor) +{ + u32 remainder; + + return __div_u64_rem(dividend, divisor, &remainder); +} + +static inline char _tolower(const char c) +{ + return c | 0x20; +} + +static const char *_parse_integer_fixup_radix(const char *s, unsigned int *base) +{ + if (*base == 0) { + if (s[0] == '0') { + if (_tolower(s[1]) == 'x' && isxdigit(s[2])) + *base = 16; + else + *base = 8; + } else + *base = 10; + } + if (*base == 16 && s[0] == '0' && _tolower(s[1]) == 'x') + s += 2; + return s; +} + +/* + * Convert non-negative integer string representation in explicitly given radix + * to an integer. + * Return number of characters consumed maybe or-ed with overflow bit. + * If overflow occurs, result integer (incorrect) is still returned. + * + * Don't you dare use this function. + */ +static unsigned int _parse_integer(const char *s, + unsigned int base, + unsigned long long *p) +{ + unsigned long long res; + unsigned int rv; + + res = 0; + rv = 0; + while (1) { + unsigned int c = *s; + unsigned int lc = c | 0x20; /* don't tolower() this line */ + unsigned int val; + + if ('0' <= c && c <= '9') + val = c - '0'; + else if ('a' <= lc && lc <= 'f') + val = lc - 'a' + 10; + else + break; + + if (val >= base) + break; + /* + * Check for overflow only if we are within range of + * it in the max base we support (16) + */ + if (unlikely(res & (~0ull << 60))) { + if (res > __div_u64(ULLONG_MAX - val, base)) + rv |= KSTRTOX_OVERFLOW; + } + res = res * base + val; + rv++; + s++; + } + *p = res; + return rv; +} + +static int _kstrtoull(const char *s, unsigned int base, unsigned long long *res) +{ + unsigned long long _res; + unsigned int rv; + + s = _parse_integer_fixup_radix(s, &base); + rv = _parse_integer(s, base, &_res); + if (rv & KSTRTOX_OVERFLOW) + return -ERANGE; + if (rv == 0) + return -EINVAL; + s += rv; + if (*s == '\n') + s++; + if (*s) + return -EINVAL; + *res = _res; + return 0; +} + +/** + * kstrtoull - convert a string to an unsigned long long + * @s: The start of the string. The string must be null-terminated, and may also + * include a single newline before its terminating null. The first character + * may also be a plus sign, but not a minus sign. + * @base: The number base to use. The maximum supported base is 16. If base is + * given as 0, then the base of the string is automatically detected with the + * conventional semantics - If it begins with 0x the number will be parsed as a + * hexadecimal (case insensitive), if it otherwise begins with 0, it will be + * parsed as an octal number. Otherwise it will be parsed as a decimal. + * @res: Where to write the result of the conversion on success. + * + * Returns 0 on success, -ERANGE on overflow and -EINVAL on parsing error. + * Used as a replacement for the obsolete simple_strtoull. Return code must + * be checked. + */ +int kstrtoull(const char *s, unsigned int base, unsigned long long *res) +{ + if (s[0] == '+') + s++; + return _kstrtoull(s, base, res); +} diff --git a/arch/x86/boot/string.h b/arch/x86/boot/string.h index 3d78e27077f4..38d8f2f5e47e 100644 --- a/arch/x86/boot/string.h +++ b/arch/x86/boot/string.h @@ -29,4 +29,5 @@ extern unsigned int atou(const char *s); extern unsigned long long simple_strtoull(const char *cp, char **endp, unsigned int base); +int kstrtoull(const char *s, unsigned int base, unsigned long long *res); #endif /* BOOT_STRING_H */ diff --git a/arch/x86/configs/i386_defconfig b/arch/x86/configs/i386_defconfig index 4bb95d7ad947..9f908112bbb9 100644 --- a/arch/x86/configs/i386_defconfig +++ b/arch/x86/configs/i386_defconfig @@ -287,7 +287,6 @@ CONFIG_NLS_ASCII=y CONFIG_NLS_ISO8859_1=y CONFIG_NLS_UTF8=y CONFIG_PRINTK_TIME=y -# CONFIG_ENABLE_WARN_DEPRECATED is not set CONFIG_FRAME_WARN=1024 CONFIG_MAGIC_SYSRQ=y # CONFIG_UNUSED_SYMBOLS is not set @@ -310,3 +309,5 @@ CONFIG_SECURITY_SELINUX_BOOTPARAM=y CONFIG_SECURITY_SELINUX_DISABLE=y CONFIG_CRYPTO_AES_586=y # CONFIG_CRYPTO_ANSI_CPRNG is not set +CONFIG_EFI_STUB=y +CONFIG_ACPI_BGRT=y diff --git a/arch/x86/configs/x86_64_defconfig b/arch/x86/configs/x86_64_defconfig index 0fed049422a8..1d3badfda09e 100644 --- a/arch/x86/configs/x86_64_defconfig +++ b/arch/x86/configs/x86_64_defconfig @@ -286,7 +286,6 @@ CONFIG_NLS_ASCII=y CONFIG_NLS_ISO8859_1=y CONFIG_NLS_UTF8=y CONFIG_PRINTK_TIME=y -# CONFIG_ENABLE_WARN_DEPRECATED is not set CONFIG_MAGIC_SYSRQ=y # CONFIG_UNUSED_SYMBOLS is not set CONFIG_DEBUG_KERNEL=y @@ -308,3 +307,6 @@ CONFIG_SECURITY_SELINUX=y CONFIG_SECURITY_SELINUX_BOOTPARAM=y CONFIG_SECURITY_SELINUX_DISABLE=y # CONFIG_CRYPTO_ANSI_CPRNG is not set +CONFIG_EFI_STUB=y +CONFIG_EFI_MIXED=y +CONFIG_ACPI_BGRT=y diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl index 955ab6a3b61f..8da78595d69d 100644 --- a/arch/x86/entry/syscalls/syscall_32.tbl +++ b/arch/x86/entry/syscalls/syscall_32.tbl @@ -429,3 +429,6 @@ 421 i386 rt_sigtimedwait_time64 sys_rt_sigtimedwait __ia32_compat_sys_rt_sigtimedwait_time64 422 i386 futex_time64 sys_futex __ia32_sys_futex 423 i386 sched_rr_get_interval_time64 sys_sched_rr_get_interval __ia32_sys_sched_rr_get_interval +425 i386 io_uring_setup sys_io_uring_setup __ia32_sys_io_uring_setup +426 i386 io_uring_enter sys_io_uring_enter __ia32_sys_io_uring_enter +427 i386 io_uring_register sys_io_uring_register __ia32_sys_io_uring_register diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl index 2ae92fddb6d5..c768447f97ec 100644 --- a/arch/x86/entry/syscalls/syscall_64.tbl +++ b/arch/x86/entry/syscalls/syscall_64.tbl @@ -345,6 +345,9 @@ 334 common rseq __x64_sys_rseq # don't use numbers 387 through 423, add new calls after the last # 'common' entry +425 common io_uring_setup __x64_sys_io_uring_setup +426 common io_uring_enter __x64_sys_io_uring_enter +427 common io_uring_register __x64_sys_io_uring_register # # x32-specific system call numbers start at 512 to avoid cache impact diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c index 17096d3cd616..7ec265bacb6a 100644 --- a/arch/x86/events/intel/core.c +++ b/arch/x86/events/intel/core.c @@ -4220,6 +4220,8 @@ __init int intel_pmu_init(void) case INTEL_FAM6_CORE2_MEROM: x86_add_quirk(intel_clovertown_quirk); + /* fall through */ + case INTEL_FAM6_CORE2_MEROM_L: case INTEL_FAM6_CORE2_PENRYN: case INTEL_FAM6_CORE2_DUNNINGTON: diff --git a/arch/x86/events/intel/lbr.c b/arch/x86/events/intel/lbr.c index c88ed39582a1..580c1b91c454 100644 --- a/arch/x86/events/intel/lbr.c +++ b/arch/x86/events/intel/lbr.c @@ -931,6 +931,7 @@ static int branch_type(unsigned long from, unsigned long to, int abort) ret = X86_BR_ZERO_CALL; break; } + /* fall through */ case 0x9a: /* call far absolute */ ret = X86_BR_CALL; break; diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c index 7abb09e2eeb8..6461a16b4559 100644 --- a/arch/x86/hyperv/hv_init.c +++ b/arch/x86/hyperv/hv_init.c @@ -96,6 +96,7 @@ void __percpu **hyperv_pcpu_input_arg; EXPORT_SYMBOL_GPL(hyperv_pcpu_input_arg); u32 hv_max_vp_index; +EXPORT_SYMBOL_GPL(hv_max_vp_index); static int hv_cpu_init(unsigned int cpu) { @@ -406,6 +407,13 @@ void hyperv_cleanup(void) /* Reset our OS id */ wrmsrl(HV_X64_MSR_GUEST_OS_ID, 0); + /* + * Reset hypercall page reference before reset the page, + * let hypercall operations fail safely rather than + * panic the kernel for using invalid hypercall page + */ + hv_hypercall_pg = NULL; + /* Reset the hypercall page */ hypercall_msr.as_uint64 = 0; wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64); diff --git a/arch/x86/include/asm/asm-prototypes.h b/arch/x86/include/asm/asm-prototypes.h index 1908214b9125..ce92c4acc913 100644 --- a/arch/x86/include/asm/asm-prototypes.h +++ b/arch/x86/include/asm/asm-prototypes.h @@ -7,7 +7,6 @@ #include <asm-generic/asm-prototypes.h> -#include <asm/page.h> #include <asm/pgtable.h> #include <asm/special_insns.h> #include <asm/preempt.h> diff --git a/arch/x86/include/asm/fpu/internal.h b/arch/x86/include/asm/fpu/internal.h index fa2c93cb42a2..fb04a3ded7dd 100644 --- a/arch/x86/include/asm/fpu/internal.h +++ b/arch/x86/include/asm/fpu/internal.h @@ -137,37 +137,25 @@ static inline int copy_fxregs_to_user(struct fxregs_state __user *fx) { if (IS_ENABLED(CONFIG_X86_32)) return user_insn(fxsave %[fx], [fx] "=m" (*fx), "m" (*fx)); - else if (IS_ENABLED(CONFIG_AS_FXSAVEQ)) + else return user_insn(fxsaveq %[fx], [fx] "=m" (*fx), "m" (*fx)); - /* See comment in copy_fxregs_to_kernel() below. */ - return user_insn(rex64/fxsave (%[fx]), "=m" (*fx), [fx] "R" (fx)); } static inline void copy_kernel_to_fxregs(struct fxregs_state *fx) { - if (IS_ENABLED(CONFIG_X86_32)) { + if (IS_ENABLED(CONFIG_X86_32)) kernel_insn(fxrstor %[fx], "=m" (*fx), [fx] "m" (*fx)); - } else { - if (IS_ENABLED(CONFIG_AS_FXSAVEQ)) { - kernel_insn(fxrstorq %[fx], "=m" (*fx), [fx] "m" (*fx)); - } else { - /* See comment in copy_fxregs_to_kernel() below. */ - kernel_insn(rex64/fxrstor (%[fx]), "=m" (*fx), [fx] "R" (fx), "m" (*fx)); - } - } + else + kernel_insn(fxrstorq %[fx], "=m" (*fx), [fx] "m" (*fx)); } static inline int copy_user_to_fxregs(struct fxregs_state __user *fx) { if (IS_ENABLED(CONFIG_X86_32)) return user_insn(fxrstor %[fx], "=m" (*fx), [fx] "m" (*fx)); - else if (IS_ENABLED(CONFIG_AS_FXSAVEQ)) + else return user_insn(fxrstorq %[fx], "=m" (*fx), [fx] "m" (*fx)); - - /* See comment in copy_fxregs_to_kernel() below. */ - return user_insn(rex64/fxrstor (%[fx]), "=m" (*fx), [fx] "R" (fx), - "m" (*fx)); } static inline void copy_kernel_to_fregs(struct fregs_state *fx) @@ -184,34 +172,8 @@ static inline void copy_fxregs_to_kernel(struct fpu *fpu) { if (IS_ENABLED(CONFIG_X86_32)) asm volatile( "fxsave %[fx]" : [fx] "=m" (fpu->state.fxsave)); - else if (IS_ENABLED(CONFIG_AS_FXSAVEQ)) + else asm volatile("fxsaveq %[fx]" : [fx] "=m" (fpu->state.fxsave)); - else { - /* Using "rex64; fxsave %0" is broken because, if the memory - * operand uses any extended registers for addressing, a second - * REX prefix will be generated (to the assembler, rex64 - * followed by semicolon is a separate instruction), and hence - * the 64-bitness is lost. - * - * Using "fxsaveq %0" would be the ideal choice, but is only - * supported starting with gas 2.16. - * - * Using, as a workaround, the properly prefixed form below - * isn't accepted by any binutils version so far released, - * complaining that the same type of prefix is used twice if - * an extended register is needed for addressing (fix submitted - * to mainline 2005-11-21). - * - * asm volatile("rex64/fxsave %0" : "=m" (fpu->state.fxsave)); - * - * This, however, we can work around by forcing the compiler to - * select an addressing mode that doesn't require extended - * registers. - */ - asm volatile( "rex64/fxsave (%[fx])" - : "=m" (fpu->state.fxsave) - : [fx] "R" (&fpu->state.fxsave)); - } } /* These macros all use (%edi)/(%rdi) as the single memory argument. */ @@ -414,6 +376,13 @@ static inline int copy_fpregs_to_fpstate(struct fpu *fpu) { if (likely(use_xsave())) { copy_xregs_to_kernel(&fpu->state.xsave); + + /* + * AVX512 state is tracked here because its use is + * known to slow the max clock speed of the core. + */ + if (fpu->state.xsave.header.xfeatures & XFEATURE_MASK_AVX512) + fpu->avx512_timestamp = jiffies; return 1; } diff --git a/arch/x86/include/asm/fpu/types.h b/arch/x86/include/asm/fpu/types.h index 202c53918ecf..2e32e178e064 100644 --- a/arch/x86/include/asm/fpu/types.h +++ b/arch/x86/include/asm/fpu/types.h @@ -303,6 +303,13 @@ struct fpu { unsigned char initialized; /* + * @avx512_timestamp: + * + * Records the timestamp of AVX512 use during last context switch. + */ + unsigned long avx512_timestamp; + + /* * @state: * * In-memory copy of all FPU registers that we save/restore diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h index c1a812bd5a27..22d05e3835f0 100644 --- a/arch/x86/include/asm/mce.h +++ b/arch/x86/include/asm/mce.h @@ -48,6 +48,7 @@ #define MCI_STATUS_SYNDV BIT_ULL(53) /* synd reg. valid */ #define MCI_STATUS_DEFERRED BIT_ULL(44) /* uncorrected error, deferred exception */ #define MCI_STATUS_POISON BIT_ULL(43) /* access poisonous data */ +#define MCI_STATUS_SCRUB BIT_ULL(40) /* Error detected during scrub operation */ /* * McaX field if set indicates a given bank supports MCA extensions: @@ -307,11 +308,17 @@ enum smca_bank_types { SMCA_FP, /* Floating Point */ SMCA_L3_CACHE, /* L3 Cache */ SMCA_CS, /* Coherent Slave */ + SMCA_CS_V2, /* Coherent Slave */ SMCA_PIE, /* Power, Interrupts, etc. */ SMCA_UMC, /* Unified Memory Controller */ SMCA_PB, /* Parameter Block */ SMCA_PSP, /* Platform Security Processor */ + SMCA_PSP_V2, /* Platform Security Processor */ SMCA_SMU, /* System Management Unit */ + SMCA_SMU_V2, /* System Management Unit */ + SMCA_MP5, /* Microprocessor 5 Unit */ + SMCA_NBIO, /* Northbridge IO Unit */ + SMCA_PCIE, /* PCI Express Unit */ N_SMCA_BANK_TYPES }; diff --git a/arch/x86/include/asm/page_64_types.h b/arch/x86/include/asm/page_64_types.h index 0ce558a8150d..8f657286d599 100644 --- a/arch/x86/include/asm/page_64_types.h +++ b/arch/x86/include/asm/page_64_types.h @@ -7,11 +7,7 @@ #endif #ifdef CONFIG_KASAN -#ifdef CONFIG_KASAN_EXTRA -#define KASAN_STACK_ORDER 2 -#else #define KASAN_STACK_ORDER 1 -#endif #else #define KASAN_STACK_ORDER 0 #endif diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index a97f28d914d5..c25c38a05c1c 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -422,25 +422,26 @@ static inline pgdval_t pgd_val(pgd_t pgd) } #define __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION -static inline pte_t ptep_modify_prot_start(struct mm_struct *mm, unsigned long addr, +static inline pte_t ptep_modify_prot_start(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep) { pteval_t ret; - ret = PVOP_CALL3(pteval_t, mmu.ptep_modify_prot_start, mm, addr, ptep); + ret = PVOP_CALL3(pteval_t, mmu.ptep_modify_prot_start, vma, addr, ptep); return (pte_t) { .pte = ret }; } -static inline void ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr, - pte_t *ptep, pte_t pte) +static inline void ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr, + pte_t *ptep, pte_t old_pte, pte_t pte) { + if (sizeof(pteval_t) > sizeof(long)) /* 5 arg words */ - pv_ops.mmu.ptep_modify_prot_commit(mm, addr, ptep, pte); + pv_ops.mmu.ptep_modify_prot_commit(vma, addr, ptep, pte); else PVOP_VCALL4(mmu.ptep_modify_prot_commit, - mm, addr, ptep, pte.pte); + vma, addr, ptep, pte.pte); } static inline void set_pte(pte_t *ptep, pte_t pte) diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h index 488c59686a73..2474e434a6f7 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -55,6 +55,7 @@ struct task_struct; struct cpumask; struct flush_tlb_info; struct mmu_gather; +struct vm_area_struct; /* * Wrapper type for pointers to code which uses the non-standard @@ -254,9 +255,9 @@ struct pv_mmu_ops { pte_t *ptep, pte_t pteval); void (*set_pmd)(pmd_t *pmdp, pmd_t pmdval); - pte_t (*ptep_modify_prot_start)(struct mm_struct *mm, unsigned long addr, + pte_t (*ptep_modify_prot_start)(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep); - void (*ptep_modify_prot_commit)(struct mm_struct *mm, unsigned long addr, + void (*ptep_modify_prot_commit)(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep, pte_t pte); struct paravirt_callee_save pte_val; diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h index 662963681ea6..e662f987dfa2 100644 --- a/arch/x86/include/asm/pci.h +++ b/arch/x86/include/asm/pci.h @@ -7,6 +7,7 @@ #include <linux/slab.h> #include <linux/string.h> #include <linux/scatterlist.h> +#include <linux/numa.h> #include <asm/io.h> #include <asm/pat.h> #include <asm/x86_init.h> @@ -141,7 +142,7 @@ cpumask_of_pcibus(const struct pci_bus *bus) int node; node = __pcibus_to_node(bus); - return (node == -1) ? cpu_online_mask : + return (node == NUMA_NO_NODE) ? cpu_online_mask : cpumask_of_node(node); } #endif diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h index 9c85b54bf03c..0bb566315621 100644 --- a/arch/x86/include/asm/pgtable_64.h +++ b/arch/x86/include/asm/pgtable_64.h @@ -259,8 +259,7 @@ extern void init_extra_mapping_uc(unsigned long phys, unsigned long size); extern void init_extra_mapping_wb(unsigned long phys, unsigned long size); #define gup_fast_permitted gup_fast_permitted -static inline bool gup_fast_permitted(unsigned long start, int nr_pages, - int write) +static inline bool gup_fast_permitted(unsigned long start, int nr_pages) { unsigned long len, end; diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 33051436c864..2bb3a648fc12 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -742,7 +742,6 @@ enum idle_boot_override {IDLE_NO_OVERRIDE=0, IDLE_HALT, IDLE_NOMWAIT, extern void enable_sep_cpu(void); extern int sysenter_setup(void); -void early_trap_pf_init(void); /* Defined in head.S */ extern struct desc_ptr early_gdt_descr; diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h index 5e49a0acb5ee..1954dd5552a2 100644 --- a/arch/x86/include/asm/uaccess.h +++ b/arch/x86/include/asm/uaccess.h @@ -34,10 +34,7 @@ static inline void set_fs(mm_segment_t fs) } #define segment_eq(a, b) ((a).seg == (b).seg) - #define user_addr_max() (current->thread.addr_limit.seg) -#define __addr_ok(addr) \ - ((unsigned long __force)(addr) < user_addr_max()) /* * Test whether a block of memory is a valid user space address. @@ -75,7 +72,7 @@ static inline bool __chk_range_not_ok(unsigned long addr, unsigned long size, un #endif /** - * access_ok: - Checks if a user space pointer is valid + * access_ok - Checks if a user space pointer is valid * @addr: User space pointer to start of block to check * @size: Size of block to check * @@ -84,12 +81,12 @@ static inline bool __chk_range_not_ok(unsigned long addr, unsigned long size, un * * Checks if a pointer to a block of memory in user space is valid. * - * Returns true (nonzero) if the memory block may be valid, false (zero) - * if it is definitely invalid. - * * Note that, depending on architecture, this function probably just * checks that the pointer is in the user space range - after calling * this function, memory access functions may still return -EFAULT. + * + * Return: true (nonzero) if the memory block may be valid, false (zero) + * if it is definitely invalid. */ #define access_ok(addr, size) \ ({ \ @@ -134,7 +131,7 @@ extern int __get_user_bad(void); __typeof__(__builtin_choose_expr(sizeof(x) > sizeof(0UL), 0ULL, 0UL)) /** - * get_user: - Get a simple variable from user space. + * get_user - Get a simple variable from user space. * @x: Variable to store result. * @ptr: Source address, in user space. * @@ -148,7 +145,7 @@ __typeof__(__builtin_choose_expr(sizeof(x) > sizeof(0UL), 0ULL, 0UL)) * @ptr must have pointer-to-simple-variable type, and the result of * dereferencing @ptr must be assignable to @x without a cast. * - * Returns zero on success, or -EFAULT on error. + * Return: zero on success, or -EFAULT on error. * On error, the variable @x is set to zero. */ /* @@ -226,7 +223,7 @@ extern void __put_user_4(void); extern void __put_user_8(void); /** - * put_user: - Write a simple value into user space. + * put_user - Write a simple value into user space. * @x: Value to copy to user space. * @ptr: Destination address, in user space. * @@ -240,7 +237,7 @@ extern void __put_user_8(void); * @ptr must have pointer-to-simple-variable type, and @x must be assignable * to the result of dereferencing @ptr. * - * Returns zero on success, or -EFAULT on error. + * Return: zero on success, or -EFAULT on error. */ #define put_user(x, ptr) \ ({ \ @@ -502,7 +499,7 @@ struct __large_struct { unsigned long buf[100]; }; } while (0) /** - * __get_user: - Get a simple variable from user space, with less checking. + * __get_user - Get a simple variable from user space, with less checking. * @x: Variable to store result. * @ptr: Source address, in user space. * @@ -519,7 +516,7 @@ struct __large_struct { unsigned long buf[100]; }; * Caller must check the pointer with access_ok() before calling this * function. * - * Returns zero on success, or -EFAULT on error. + * Return: zero on success, or -EFAULT on error. * On error, the variable @x is set to zero. */ @@ -527,7 +524,7 @@ struct __large_struct { unsigned long buf[100]; }; __get_user_nocheck((x), (ptr), sizeof(*(ptr))) /** - * __put_user: - Write a simple value into user space, with less checking. + * __put_user - Write a simple value into user space, with less checking. * @x: Value to copy to user space. * @ptr: Destination address, in user space. * @@ -544,7 +541,7 @@ struct __large_struct { unsigned long buf[100]; }; * Caller must check the pointer with access_ok() before calling this * function. * - * Returns zero on success, or -EFAULT on error. + * Return: zero on success, or -EFAULT on error. */ #define __put_user(x, ptr) \ diff --git a/arch/x86/include/asm/unwind.h b/arch/x86/include/asm/unwind.h index 1f86e1b0a5cd..499578f7e6d7 100644 --- a/arch/x86/include/asm/unwind.h +++ b/arch/x86/include/asm/unwind.h @@ -23,6 +23,12 @@ struct unwind_state { #elif defined(CONFIG_UNWINDER_FRAME_POINTER) bool got_irq; unsigned long *bp, *orig_sp, ip; + /* + * If non-NULL: The current frame is incomplete and doesn't contain a + * valid BP. When looking for the next frame, use this instead of the + * non-existent saved BP. + */ + unsigned long *next_bp; struct pt_regs *regs; #else unsigned long *sp; diff --git a/arch/x86/include/asm/uv/bios.h b/arch/x86/include/asm/uv/bios.h index 3f697a9e3f59..8cfccc3cbbf4 100644 --- a/arch/x86/include/asm/uv/bios.h +++ b/arch/x86/include/asm/uv/bios.h @@ -141,7 +141,6 @@ enum uv_memprotect { */ extern s64 uv_bios_call(enum uv_bios_cmd, u64, u64, u64, u64, u64); extern s64 uv_bios_call_irqsave(enum uv_bios_cmd, u64, u64, u64, u64, u64); -extern s64 uv_bios_call_reentrant(enum uv_bios_cmd, u64, u64, u64, u64, u64); extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *, long *); extern s64 uv_bios_freq_base(u64, u64 *); @@ -152,11 +151,7 @@ extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect); extern s64 uv_bios_reserved_page_pa(u64, u64 *, u64 *, u64 *); extern int uv_bios_set_legacy_vga_target(bool decode, int domain, int bus); -#ifdef CONFIG_EFI extern void uv_bios_init(void); -#else -void uv_bios_init(void) { } -#endif extern unsigned long sn_rtc_cycles_per_second; extern int uv_type; diff --git a/arch/x86/kernel/acpi/wakeup_32.S b/arch/x86/kernel/acpi/wakeup_32.S index 0c26b1b44e51..4203d4f0c68d 100644 --- a/arch/x86/kernel/acpi/wakeup_32.S +++ b/arch/x86/kernel/acpi/wakeup_32.S @@ -90,7 +90,7 @@ ret_point: .data ALIGN ENTRY(saved_magic) .long 0 -ENTRY(saved_eip) .long 0 +saved_eip: .long 0 # saved registers saved_idt: .long 0,0 diff --git a/arch/x86/kernel/acpi/wakeup_64.S b/arch/x86/kernel/acpi/wakeup_64.S index 50b8ed0317a3..510fa12aab73 100644 --- a/arch/x86/kernel/acpi/wakeup_64.S +++ b/arch/x86/kernel/acpi/wakeup_64.S @@ -125,12 +125,12 @@ ENTRY(do_suspend_lowlevel) ENDPROC(do_suspend_lowlevel) .data -ENTRY(saved_rbp) .quad 0 -ENTRY(saved_rsi) .quad 0 -ENTRY(saved_rdi) .quad 0 -ENTRY(saved_rbx) .quad 0 +saved_rbp: .quad 0 +saved_rsi: .quad 0 +saved_rdi: .quad 0 +saved_rbx: .quad 0 -ENTRY(saved_rip) .quad 0 -ENTRY(saved_rsp) .quad 0 +saved_rip: .quad 0 +saved_rsp: .quad 0 ENTRY(saved_magic) .quad 0 diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 2953bbf05c08..264e3221d923 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -812,6 +812,7 @@ static int irq_polarity(int idx) return IOAPIC_POL_HIGH; case MP_IRQPOL_RESERVED: pr_warn("IOAPIC: Invalid polarity: 2, defaulting to low\n"); + /* fall through */ case MP_IRQPOL_ACTIVE_LOW: default: /* Pointless default required due to do gcc stupidity */ return IOAPIC_POL_LOW; @@ -859,6 +860,7 @@ static int irq_trigger(int idx) return IOAPIC_EDGE; case MP_IRQTRIG_RESERVED: pr_warn("IOAPIC: Invalid trigger mode 2 defaulting to level\n"); + /* fall through */ case MP_IRQTRIG_LEVEL: default: /* Pointless default required due to do gcc stupidity */ return IOAPIC_LEVEL; diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index a555da094157..1e225528f0d7 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -27,6 +27,7 @@ #include <linux/crash_dump.h> #include <linux/reboot.h> #include <linux/memory.h> +#include <linux/numa.h> #include <asm/uv/uv_mmrs.h> #include <asm/uv/uv_hub.h> @@ -1390,7 +1391,7 @@ static void __init build_socket_tables(void) } /* Set socket -> node values: */ - lnid = -1; + lnid = NUMA_NO_NODE; for_each_present_cpu(cpu) { int nid = cpu_to_node(cpu); int apicid, sockid; @@ -1521,7 +1522,7 @@ static void __init uv_system_init_hub(void) new_hub->pnode = 0xffff; new_hub->numa_blade_id = uv_node_to_blade_id(nodeid); - new_hub->memory_nid = -1; + new_hub->memory_nid = NUMA_NO_NODE; new_hub->nr_possible_cpus = 0; new_hub->nr_online_cpus = 0; } @@ -1538,7 +1539,7 @@ static void __init uv_system_init_hub(void) uv_cpu_info_per(cpu)->p_uv_hub_info = uv_hub_info_list(nodeid); uv_cpu_info_per(cpu)->blade_cpu_id = uv_cpu_hub_info(cpu)->nr_possible_cpus++; - if (uv_cpu_hub_info(cpu)->memory_nid == -1) + if (uv_cpu_hub_info(cpu)->memory_nid == NUMA_NO_NODE) uv_cpu_hub_info(cpu)->memory_nid = cpu_to_node(cpu); /* Init memoryless node: */ diff --git a/arch/x86/kernel/cpu/cacheinfo.c b/arch/x86/kernel/cpu/cacheinfo.c index c4d1023fb0ab..395d46f78582 100644 --- a/arch/x86/kernel/cpu/cacheinfo.c +++ b/arch/x86/kernel/cpu/cacheinfo.c @@ -248,6 +248,7 @@ amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax, switch (leaf) { case 1: l1 = &l1i; + /* fall through */ case 0: if (!l1->val) return; diff --git a/arch/x86/kernel/cpu/mce/amd.c b/arch/x86/kernel/cpu/mce/amd.c index 89298c83de53..e64de5149e50 100644 --- a/arch/x86/kernel/cpu/mce/amd.c +++ b/arch/x86/kernel/cpu/mce/amd.c @@ -88,11 +88,17 @@ static struct smca_bank_name smca_names[] = { [SMCA_FP] = { "floating_point", "Floating Point Unit" }, [SMCA_L3_CACHE] = { "l3_cache", "L3 Cache" }, [SMCA_CS] = { "coherent_slave", "Coherent Slave" }, + [SMCA_CS_V2] = { "coherent_slave", "Coherent Slave" }, [SMCA_PIE] = { "pie", "Power, Interrupts, etc." }, [SMCA_UMC] = { "umc", "Unified Memory Controller" }, [SMCA_PB] = { "param_block", "Parameter Block" }, [SMCA_PSP] = { "psp", "Platform Security Processor" }, + [SMCA_PSP_V2] = { "psp", "Platform Security Processor" }, [SMCA_SMU] = { "smu", "System Management Unit" }, + [SMCA_SMU_V2] = { "smu", "System Management Unit" }, + [SMCA_MP5] = { "mp5", "Microprocessor 5 Unit" }, + [SMCA_NBIO] = { "nbio", "Northbridge IO Unit" }, + [SMCA_PCIE] = { "pcie", "PCI Express Unit" }, }; static u32 smca_bank_addrs[MAX_NR_BANKS][NR_BLOCKS] __ro_after_init = @@ -138,30 +144,42 @@ static struct smca_hwid smca_hwid_mcatypes[] = { { SMCA_RESERVED, HWID_MCATYPE(0x00, 0x0), 0x0 }, /* ZN Core (HWID=0xB0) MCA types */ - { SMCA_LS, HWID_MCATYPE(0xB0, 0x0), 0x1FFFEF }, + { SMCA_LS, HWID_MCATYPE(0xB0, 0x0), 0x1FFFFF }, { SMCA_IF, HWID_MCATYPE(0xB0, 0x1), 0x3FFF }, { SMCA_L2_CACHE, HWID_MCATYPE(0xB0, 0x2), 0xF }, { SMCA_DE, HWID_MCATYPE(0xB0, 0x3), 0x1FF }, /* HWID 0xB0 MCATYPE 0x4 is Reserved */ - { SMCA_EX, HWID_MCATYPE(0xB0, 0x5), 0x7FF }, + { SMCA_EX, HWID_MCATYPE(0xB0, 0x5), 0xFFF }, { SMCA_FP, HWID_MCATYPE(0xB0, 0x6), 0x7F }, { SMCA_L3_CACHE, HWID_MCATYPE(0xB0, 0x7), 0xFF }, /* Data Fabric MCA types */ { SMCA_CS, HWID_MCATYPE(0x2E, 0x0), 0x1FF }, - { SMCA_PIE, HWID_MCATYPE(0x2E, 0x1), 0xF }, + { SMCA_PIE, HWID_MCATYPE(0x2E, 0x1), 0x1F }, + { SMCA_CS_V2, HWID_MCATYPE(0x2E, 0x2), 0x3FFF }, /* Unified Memory Controller MCA type */ - { SMCA_UMC, HWID_MCATYPE(0x96, 0x0), 0x3F }, + { SMCA_UMC, HWID_MCATYPE(0x96, 0x0), 0xFF }, /* Parameter Block MCA type */ { SMCA_PB, HWID_MCATYPE(0x05, 0x0), 0x1 }, /* Platform Security Processor MCA type */ { SMCA_PSP, HWID_MCATYPE(0xFF, 0x0), 0x1 }, + { SMCA_PSP_V2, HWID_MCATYPE(0xFF, 0x1), 0x3FFFF }, /* System Management Unit MCA type */ { SMCA_SMU, HWID_MCATYPE(0x01, 0x0), 0x1 }, + { SMCA_SMU_V2, HWID_MCATYPE(0x01, 0x1), 0x7FF }, + + /* Microprocessor 5 Unit MCA type */ + { SMCA_MP5, HWID_MCATYPE(0x01, 0x2), 0x3FF }, + + /* Northbridge IO Unit MCA type */ + { SMCA_NBIO, HWID_MCATYPE(0x18, 0x0), 0x1F }, + + /* PCI Express Unit MCA type */ + { SMCA_PCIE, HWID_MCATYPE(0x46, 0x0), 0x1F }, }; struct smca_bank smca_banks[MAX_NR_BANKS]; @@ -545,6 +563,40 @@ out: return offset; } +/* + * Turn off MC4_MISC thresholding banks on all family 0x15 models since + * they're not supported there. + */ +void disable_err_thresholding(struct cpuinfo_x86 *c) +{ + int i; + u64 hwcr; + bool need_toggle; + u32 msrs[] = { + 0x00000413, /* MC4_MISC0 */ + 0xc0000408, /* MC4_MISC1 */ + }; + + if (c->x86 != 0x15) + return; + + rdmsrl(MSR_K7_HWCR, hwcr); + + /* McStatusWrEn has to be set */ + need_toggle = !(hwcr & BIT(18)); + + if (need_toggle) + wrmsrl(MSR_K7_HWCR, hwcr | BIT(18)); + + /* Clear CntP bit safely */ + for (i = 0; i < ARRAY_SIZE(msrs); i++) + msr_clear_bit(msrs[i], 62); + + /* restore old settings */ + if (need_toggle) + wrmsrl(MSR_K7_HWCR, hwcr); +} + /* cpu init entry point, called from mce.c with preempt off */ void mce_amd_feature_init(struct cpuinfo_x86 *c) { @@ -552,6 +604,8 @@ void mce_amd_feature_init(struct cpuinfo_x86 *c) unsigned int bank, block, cpu = smp_processor_id(); int offset = -1; + disable_err_thresholding(c); + for (bank = 0; bank < mca_cfg.banks; ++bank) { if (mce_flags.smca) smca_configure(bank, cpu); diff --git a/arch/x86/kernel/cpu/mce/apei.c b/arch/x86/kernel/cpu/mce/apei.c index 1d9b3ce662a0..c038e5c00a59 100644 --- a/arch/x86/kernel/cpu/mce/apei.c +++ b/arch/x86/kernel/cpu/mce/apei.c @@ -64,11 +64,11 @@ void apei_mce_report_mem_error(int severity, struct cper_sec_mem_err *mem_err) EXPORT_SYMBOL_GPL(apei_mce_report_mem_error); #define CPER_CREATOR_MCE \ - UUID_LE(0x75a574e3, 0x5052, 0x4b29, 0x8a, 0x8e, 0xbe, 0x2c, \ - 0x64, 0x90, 0xb8, 0x9d) + GUID_INIT(0x75a574e3, 0x5052, 0x4b29, 0x8a, 0x8e, 0xbe, 0x2c, \ + 0x64, 0x90, 0xb8, 0x9d) #define CPER_SECTION_TYPE_MCE \ - UUID_LE(0xfe08ffbe, 0x95e4, 0x4be7, 0xbc, 0x73, 0x40, 0x96, \ - 0x04, 0x4a, 0x38, 0xfc) + GUID_INIT(0xfe08ffbe, 0x95e4, 0x4be7, 0xbc, 0x73, 0x40, 0x96, \ + 0x04, 0x4a, 0x38, 0xfc) /* * CPER specification (in UEFI specification 2.3 appendix N) requires @@ -135,7 +135,7 @@ retry: goto out; /* try to skip other type records in storage */ else if (rc != sizeof(rcd) || - uuid_le_cmp(rcd.hdr.creator_id, CPER_CREATOR_MCE)) + !guid_equal(&rcd.hdr.creator_id, &CPER_CREATOR_MCE)) goto retry; memcpy(m, &rcd.mce, sizeof(*m)); rc = sizeof(*m); diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c index 6ce290c506d9..b7fb541a4873 100644 --- a/arch/x86/kernel/cpu/mce/core.c +++ b/arch/x86/kernel/cpu/mce/core.c @@ -1612,36 +1612,6 @@ static int __mcheck_cpu_apply_quirks(struct cpuinfo_x86 *c) if (c->x86 == 0x15 && c->x86_model <= 0xf) mce_flags.overflow_recov = 1; - /* - * Turn off MC4_MISC thresholding banks on those models since - * they're not supported there. - */ - if (c->x86 == 0x15 && - (c->x86_model >= 0x10 && c->x86_model <= 0x1f)) { - int i; - u64 hwcr; - bool need_toggle; - u32 msrs[] = { - 0x00000413, /* MC4_MISC0 */ - 0xc0000408, /* MC4_MISC1 */ - }; - - rdmsrl(MSR_K7_HWCR, hwcr); - - /* McStatusWrEn has to be set */ - need_toggle = !(hwcr & BIT(18)); - - if (need_toggle) - wrmsrl(MSR_K7_HWCR, hwcr | BIT(18)); - - /* Clear CntP bit safely */ - for (i = 0; i < ARRAY_SIZE(msrs); i++) - msr_clear_bit(msrs[i], 62); - - /* restore old settings */ - if (need_toggle) - wrmsrl(MSR_K7_HWCR, hwcr); - } } if (c->x86_vendor == X86_VENDOR_INTEL) { diff --git a/arch/x86/kernel/cpu/mce/severity.c b/arch/x86/kernel/cpu/mce/severity.c index dc3e26e905a3..65201e180fe0 100644 --- a/arch/x86/kernel/cpu/mce/severity.c +++ b/arch/x86/kernel/cpu/mce/severity.c @@ -165,6 +165,11 @@ static struct severity { SER, MASK(MCI_STATUS_OVER|MCI_UC_SAR|MCI_ADDR|MCACOD, MCI_UC_SAR|MCI_ADDR|MCACOD_DATA), KERNEL ), + MCESEV( + PANIC, "Instruction fetch error in kernel", + SER, MASK(MCI_STATUS_OVER|MCI_UC_SAR|MCI_ADDR|MCACOD, MCI_UC_SAR|MCI_ADDR|MCACOD_INSTR), + KERNEL + ), #endif MCESEV( PANIC, "Action required: unknown MCACOD", diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index e81a2db42df7..3fa238a137d2 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -328,6 +328,18 @@ static void __init ms_hyperv_init_platform(void) # ifdef CONFIG_SMP smp_ops.smp_prepare_boot_cpu = hv_smp_prepare_boot_cpu; # endif + + /* + * Hyper-V doesn't provide irq remapping for IO-APIC. To enable x2apic, + * set x2apic destination mode to physcial mode when x2apic is available + * and Hyper-V IOMMU driver makes sure cpus assigned with IO-APIC irqs + * have 8-bit APIC id. + */ +# ifdef CONFIG_X86_X2APIC + if (x2apic_supported()) + x2apic_phys = 1; +# endif + #endif } diff --git a/arch/x86/kernel/cpu/mtrr/cleanup.c b/arch/x86/kernel/cpu/mtrr/cleanup.c index 3668c5df90c6..5bd011737272 100644 --- a/arch/x86/kernel/cpu/mtrr/cleanup.c +++ b/arch/x86/kernel/cpu/mtrr/cleanup.c @@ -296,7 +296,7 @@ range_to_mtrr_with_hole(struct var_mtrr_state *state, unsigned long basek, unsigned long sizek) { unsigned long hole_basek, hole_sizek; - unsigned long second_basek, second_sizek; + unsigned long second_sizek; unsigned long range0_basek, range0_sizek; unsigned long range_basek, range_sizek; unsigned long chunk_sizek; @@ -304,7 +304,6 @@ range_to_mtrr_with_hole(struct var_mtrr_state *state, unsigned long basek, hole_basek = 0; hole_sizek = 0; - second_basek = 0; second_sizek = 0; chunk_sizek = state->chunk_sizek; gran_sizek = state->gran_sizek; diff --git a/arch/x86/kernel/cpu/resctrl/pseudo_lock.c b/arch/x86/kernel/cpu/resctrl/pseudo_lock.c index 14bed6af8377..604c0e3bcc83 100644 --- a/arch/x86/kernel/cpu/resctrl/pseudo_lock.c +++ b/arch/x86/kernel/cpu/resctrl/pseudo_lock.c @@ -34,13 +34,6 @@ #include "pseudo_lock_event.h" /* - * MSR_MISC_FEATURE_CONTROL register enables the modification of hardware - * prefetcher state. Details about this register can be found in the MSR - * tables for specific platforms found in Intel's SDM. - */ -#define MSR_MISC_FEATURE_CONTROL 0x000001a4 - -/* * The bits needed to disable hardware prefetching varies based on the * platform. During initialization we will discover which bits to use. */ diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index 50895c2f937d..a687d10da417 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -671,21 +671,18 @@ __init void e820__reallocate_tables(void) int size; size = offsetof(struct e820_table, entries) + sizeof(struct e820_entry)*e820_table->nr_entries; - n = kmalloc(size, GFP_KERNEL); + n = kmemdup(e820_table, size, GFP_KERNEL); BUG_ON(!n); - memcpy(n, e820_table, size); e820_table = n; size = offsetof(struct e820_table, entries) + sizeof(struct e820_entry)*e820_table_kexec->nr_entries; - n = kmalloc(size, GFP_KERNEL); + n = kmemdup(e820_table_kexec, size, GFP_KERNEL); BUG_ON(!n); - memcpy(n, e820_table_kexec, size); e820_table_kexec = n; size = offsetof(struct e820_table, entries) + sizeof(struct e820_entry)*e820_table_firmware->nr_entries; - n = kmalloc(size, GFP_KERNEL); + n = kmemdup(e820_table_firmware, size, GFP_KERNEL); BUG_ON(!n); - memcpy(n, e820_table_firmware, size); e820_table_firmware = n; } diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c index 9cc108456d0b..d7432c2b1051 100644 --- a/arch/x86/kernel/fpu/xstate.c +++ b/arch/x86/kernel/fpu/xstate.c @@ -669,7 +669,7 @@ static bool is_supported_xstate_size(unsigned int test_xstate_size) return false; } -static int init_xstate_size(void) +static int __init init_xstate_size(void) { /* Recompute the context size for enabled features: */ unsigned int possible_xstate_size; diff --git a/arch/x86/kernel/hw_breakpoint.c b/arch/x86/kernel/hw_breakpoint.c index 34a5c1715148..ff9bfd40429e 100644 --- a/arch/x86/kernel/hw_breakpoint.c +++ b/arch/x86/kernel/hw_breakpoint.c @@ -261,12 +261,8 @@ static int arch_build_bp_info(struct perf_event *bp, * allow kernel breakpoints at all. */ if (attr->bp_addr >= TASK_SIZE_MAX) { -#ifdef CONFIG_KPROBES if (within_kprobe_blacklist(attr->bp_addr)) return -EINVAL; -#else - return -EINVAL; -#endif } hw->type = X86_BREAKPOINT_EXECUTE; @@ -279,6 +275,7 @@ static int arch_build_bp_info(struct perf_event *bp, hw->len = X86_BREAKPOINT_LEN_X; return 0; } + /* fall through */ default: return -EINVAL; } diff --git a/arch/x86/kernel/kexec-bzimage64.c b/arch/x86/kernel/kexec-bzimage64.c index 53917a3ebf94..1f3b77367948 100644 --- a/arch/x86/kernel/kexec-bzimage64.c +++ b/arch/x86/kernel/kexec-bzimage64.c @@ -218,6 +218,9 @@ setup_boot_parameters(struct kimage *image, struct boot_params *params, params->screen_info.ext_mem_k = 0; params->alt_mem_k = 0; + /* Always fill in RSDP: it is either 0 or a valid value */ + params->acpi_rsdp_addr = boot_params.acpi_rsdp_addr; + /* Default APM info */ memset(¶ms->apm_bios_info, 0, sizeof(params->apm_bios_info)); @@ -256,7 +259,6 @@ setup_boot_parameters(struct kimage *image, struct boot_params *params, setup_efi_state(params, params_load_addr, efi_map_offset, efi_map_sz, efi_setup_data_offset); #endif - /* Setup EDD info */ memcpy(params->eddbuf, boot_params.eddbuf, EDDMAXNR * sizeof(struct edd_info)); diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c index 5db08425063e..4ff6b4cdb941 100644 --- a/arch/x86/kernel/kgdb.c +++ b/arch/x86/kernel/kgdb.c @@ -467,6 +467,7 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code, ptr = &remcomInBuffer[1]; if (kgdb_hex2long(&ptr, &addr)) linux_regs->ip = addr; + /* fall through */ case 'D': case 'k': /* clear the trace bit */ diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c index 4c8acdfdc5a7..ceba408ea982 100644 --- a/arch/x86/kernel/machine_kexec_64.c +++ b/arch/x86/kernel/machine_kexec_64.c @@ -352,6 +352,8 @@ void machine_kexec(struct kimage *image) void arch_crash_save_vmcoreinfo(void) { + u64 sme_mask = sme_me_mask; + VMCOREINFO_NUMBER(phys_base); VMCOREINFO_SYMBOL(init_top_pgt); vmcoreinfo_append_str("NUMBER(pgtable_l5_enabled)=%d\n", @@ -364,6 +366,7 @@ void arch_crash_save_vmcoreinfo(void) vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset()); VMCOREINFO_NUMBER(KERNEL_IMAGE_SIZE); + VMCOREINFO_NUMBER(sme_mask); } /* arch-dependent functionality related to kexec file-based syscall */ diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c index e8796fcd7e5a..13af08827eef 100644 --- a/arch/x86/kernel/setup_percpu.c +++ b/arch/x86/kernel/setup_percpu.c @@ -171,7 +171,7 @@ void __init setup_per_cpu_areas(void) unsigned long delta; int rc; - pr_info("NR_CPUS:%d nr_cpumask_bits:%d nr_cpu_ids:%u nr_node_ids:%d\n", + pr_info("NR_CPUS:%d nr_cpumask_bits:%d nr_cpu_ids:%u nr_node_ids:%u\n", NR_CPUS, nr_cpumask_bits, nr_cpu_ids, nr_node_ids); /* diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index ccd1f2a8e557..ce1a67b70168 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -56,6 +56,7 @@ #include <linux/stackprotector.h> #include <linux/gfp.h> #include <linux/cpuidle.h> +#include <linux/numa.h> #include <asm/acpi.h> #include <asm/desc.h> @@ -149,7 +150,7 @@ static inline void smpboot_restore_warm_reset_vector(void) */ static void smp_callin(void) { - int cpuid, phys_id; + int cpuid; /* * If waken up by an INIT in an 82489DX configuration @@ -160,11 +161,6 @@ static void smp_callin(void) cpuid = smp_processor_id(); /* - * (This works even if the APIC is not enabled.) - */ - phys_id = read_apic_id(); - - /* * the boot CPU has finished the init stage and is spinning * on callin_map until we finish. We are free to set up this * CPU, first the APIC. (this is probably redundant on most @@ -841,7 +837,7 @@ wakeup_secondary_cpu_via_init(int phys_apicid, unsigned long start_eip) /* reduce the number of lines printed when booting a large cpu count system */ static void announce_cpu(int cpu, int apicid) { - static int current_node = -1; + static int current_node = NUMA_NO_NODE; int node = early_cpu_to_node(cpu); static int width, node_width; diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index e289ce1332ab..d26f9e9c3d83 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -881,12 +881,12 @@ do_spurious_interrupt_bug(struct pt_regs *regs, long error_code) dotraplinkage void do_device_not_available(struct pt_regs *regs, long error_code) { - unsigned long cr0; + unsigned long cr0 = read_cr0(); RCU_LOCKDEP_WARN(!rcu_is_watching(), "entry code didn't wake RCU"); #ifdef CONFIG_MATH_EMULATION - if (!boot_cpu_has(X86_FEATURE_FPU) && (read_cr0() & X86_CR0_EM)) { + if (!boot_cpu_has(X86_FEATURE_FPU) && (cr0 & X86_CR0_EM)) { struct math_emu_info info = { }; cond_local_irq_enable(regs); @@ -898,7 +898,6 @@ do_device_not_available(struct pt_regs *regs, long error_code) #endif /* This should not happen. */ - cr0 = read_cr0(); if (WARN(cr0 & X86_CR0_TS, "CR0.TS was set")) { /* Try to fix it up and carry on. */ write_cr0(cr0 & ~X86_CR0_TS); diff --git a/arch/x86/kernel/unwind_frame.c b/arch/x86/kernel/unwind_frame.c index 3dc26f95d46e..9b9fd4826e7a 100644 --- a/arch/x86/kernel/unwind_frame.c +++ b/arch/x86/kernel/unwind_frame.c @@ -320,10 +320,14 @@ bool unwind_next_frame(struct unwind_state *state) } /* Get the next frame pointer: */ - if (state->regs) + if (state->next_bp) { + next_bp = state->next_bp; + state->next_bp = NULL; + } else if (state->regs) { next_bp = (unsigned long *)state->regs->bp; - else + } else { next_bp = (unsigned long *)READ_ONCE_TASK_STACK(state->task, *state->bp); + } /* Move to the next frame if it's safe: */ if (!update_stack_state(state, next_bp)) @@ -398,6 +402,21 @@ void __unwind_start(struct unwind_state *state, struct task_struct *task, bp = get_frame_pointer(task, regs); + /* + * If we crash with IP==0, the last successfully executed instruction + * was probably an indirect function call with a NULL function pointer. + * That means that SP points into the middle of an incomplete frame: + * *SP is a return pointer, and *(SP-sizeof(unsigned long)) is where we + * would have written a frame pointer if we hadn't crashed. + * Pretend that the frame is complete and that BP points to it, but save + * the real BP so that we can use it when looking for the next frame. + */ + if (regs && regs->ip == 0 && + (unsigned long *)kernel_stack_pointer(regs) >= first_frame) { + state->next_bp = bp; + bp = ((unsigned long *)kernel_stack_pointer(regs)) - 1; + } + /* Initialize stack info and make sure the frame data is accessible: */ get_stack_info(bp, state->task, &state->stack_info, &state->stack_mask); @@ -410,7 +429,7 @@ void __unwind_start(struct unwind_state *state, struct task_struct *task, */ while (!unwind_done(state) && (!on_stack(&state->stack_info, first_frame, sizeof(long)) || - state->bp < first_frame)) + (state->next_bp == NULL && state->bp < first_frame))) unwind_next_frame(state); } EXPORT_SYMBOL_GPL(__unwind_start); diff --git a/arch/x86/kernel/unwind_orc.c b/arch/x86/kernel/unwind_orc.c index 26038eacf74a..89be1be1790c 100644 --- a/arch/x86/kernel/unwind_orc.c +++ b/arch/x86/kernel/unwind_orc.c @@ -113,6 +113,20 @@ static struct orc_entry *orc_ftrace_find(unsigned long ip) } #endif +/* + * If we crash with IP==0, the last successfully executed instruction + * was probably an indirect function call with a NULL function pointer, + * and we don't have unwind information for NULL. + * This hardcoded ORC entry for IP==0 allows us to unwind from a NULL function + * pointer into its parent and then continue normally from there. + */ +static struct orc_entry null_orc_entry = { + .sp_offset = sizeof(long), + .sp_reg = ORC_REG_SP, + .bp_reg = ORC_REG_UNDEFINED, + .type = ORC_TYPE_CALL +}; + static struct orc_entry *orc_find(unsigned long ip) { static struct orc_entry *orc; @@ -120,6 +134,9 @@ static struct orc_entry *orc_find(unsigned long ip) if (!orc_init) return NULL; + if (ip == 0) + return &null_orc_entry; + /* For non-init vmlinux addresses, use the fast lookup table: */ if (ip >= LOOKUP_START_IP && ip < LOOKUP_STOP_IP) { unsigned int idx, start, stop; diff --git a/arch/x86/kernel/uprobes.c b/arch/x86/kernel/uprobes.c index 843feb94a950..ccf03416e434 100644 --- a/arch/x86/kernel/uprobes.c +++ b/arch/x86/kernel/uprobes.c @@ -745,6 +745,7 @@ static int branch_setup_xol_ops(struct arch_uprobe *auprobe, struct insn *insn) * OPCODE1() of the "short" jmp which checks the same condition. */ opc1 = OPCODE2(insn) - 0x10; + /* fall through */ default: if (!is_cond_jmp_opcode(opc1)) return -ENOSYS; diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index 0d618ee634ac..bad8c51fee6e 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -31,7 +31,7 @@ #undef i386 /* in case the preprocessor is a 32bit one */ -OUTPUT_FORMAT(CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT) +OUTPUT_FORMAT(CONFIG_OUTPUT_FORMAT) #ifdef CONFIG_X86_32 OUTPUT_ARCH(i386) @@ -401,7 +401,7 @@ SECTIONS * Per-cpu symbols which need to be offset from __per_cpu_load * for the boot processor. */ -#define INIT_PER_CPU(x) init_per_cpu__##x = x + __per_cpu_load +#define INIT_PER_CPU(x) init_per_cpu__##x = ABSOLUTE(x) + __per_cpu_load INIT_PER_CPU(gdt_page); INIT_PER_CPU(irq_stack_union); diff --git a/arch/x86/lib/insn-eval.c b/arch/x86/lib/insn-eval.c index 9119d8e41f1f..cf00ab6c6621 100644 --- a/arch/x86/lib/insn-eval.c +++ b/arch/x86/lib/insn-eval.c @@ -179,6 +179,8 @@ static int resolve_default_seg(struct insn *insn, struct pt_regs *regs, int off) if (insn->addr_bytes == 2) return -EINVAL; + /* fall through */ + case -EDOM: case offsetof(struct pt_regs, bx): case offsetof(struct pt_regs, si): diff --git a/arch/x86/lib/usercopy_32.c b/arch/x86/lib/usercopy_32.c index bfd94e7812fc..7d290777246d 100644 --- a/arch/x86/lib/usercopy_32.c +++ b/arch/x86/lib/usercopy_32.c @@ -54,13 +54,13 @@ do { \ } while (0) /** - * clear_user: - Zero a block of memory in user space. + * clear_user - Zero a block of memory in user space. * @to: Destination address, in user space. * @n: Number of bytes to zero. * * Zero a block of memory in user space. * - * Returns number of bytes that could not be cleared. + * Return: number of bytes that could not be cleared. * On success, this will be zero. */ unsigned long @@ -74,14 +74,14 @@ clear_user(void __user *to, unsigned long n) EXPORT_SYMBOL(clear_user); /** - * __clear_user: - Zero a block of memory in user space, with less checking. + * __clear_user - Zero a block of memory in user space, with less checking. * @to: Destination address, in user space. * @n: Number of bytes to zero. * * Zero a block of memory in user space. Caller must check * the specified block with access_ok() before calling this function. * - * Returns number of bytes that could not be cleared. + * Return: number of bytes that could not be cleared. * On success, this will be zero. */ unsigned long diff --git a/arch/x86/mm/cpu_entry_area.c b/arch/x86/mm/cpu_entry_area.c index 12d7e7fb4efd..19c6abf9ea31 100644 --- a/arch/x86/mm/cpu_entry_area.c +++ b/arch/x86/mm/cpu_entry_area.c @@ -52,7 +52,7 @@ cea_map_percpu_pages(void *cea_vaddr, void *ptr, int pages, pgprot_t prot) cea_set_pte(cea_vaddr, per_cpu_ptr_to_phys(ptr), prot); } -static void percpu_setup_debug_store(int cpu) +static void __init percpu_setup_debug_store(int cpu) { #ifdef CONFIG_CPU_SUP_INTEL int npages; diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c index e3cdc85ce5b6..ee8f8ab46941 100644 --- a/arch/x86/mm/dump_pagetables.c +++ b/arch/x86/mm/dump_pagetables.c @@ -444,7 +444,6 @@ static void walk_pud_level(struct seq_file *m, struct pg_state *st, p4d_t addr, int i; pud_t *start, *pud_start; pgprotval_t prot, eff; - pud_t *prev_pud = NULL; pud_start = start = (pud_t *)p4d_page_vaddr(addr); @@ -462,7 +461,6 @@ static void walk_pud_level(struct seq_file *m, struct pg_state *st, p4d_t addr, } else note_page(m, st, __pgprot(0), 0, 3); - prev_pud = start; start++; } } diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 9d5c75f02295..667f1da36208 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -1031,7 +1031,7 @@ bad_area_access_error(struct pt_regs *regs, unsigned long error_code, static void do_sigbus(struct pt_regs *regs, unsigned long error_code, unsigned long address, - unsigned int fault) + vm_fault_t fault) { struct task_struct *tsk = current; diff --git a/arch/x86/mm/mpx.c b/arch/x86/mm/mpx.c index de1851d15699..c805db6236b4 100644 --- a/arch/x86/mm/mpx.c +++ b/arch/x86/mm/mpx.c @@ -9,12 +9,12 @@ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/mm_types.h> +#include <linux/mman.h> #include <linux/syscalls.h> #include <linux/sched/sysctl.h> #include <asm/insn.h> #include <asm/insn-eval.h> -#include <asm/mman.h> #include <asm/mmu_context.h> #include <asm/mpx.h> #include <asm/processor.h> diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index 1308f5408bf7..12c1b7a83ed7 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -123,7 +123,7 @@ void __init setup_node_to_cpumask_map(void) alloc_bootmem_cpumask_var(&node_to_cpumask_map[node]); /* cpumask_of_node() will now work */ - pr_debug("Node to cpumask map for %d nodes\n", nr_node_ids); + pr_debug("Node to cpumask map for %u nodes\n", nr_node_ids); } static int __init numa_add_memblk_to(int nid, u64 start, u64 end, @@ -866,7 +866,7 @@ const struct cpumask *cpumask_of_node(int node) { if (node >= nr_node_ids) { printk(KERN_WARNING - "cpumask_of_node(%d): node > nr_node_ids(%d)\n", + "cpumask_of_node(%d): node > nr_node_ids(%u)\n", node, nr_node_ids); dump_stack(); return cpu_none_mask; diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c index 14e6119838a6..4c570612e24e 100644 --- a/arch/x86/mm/pageattr.c +++ b/arch/x86/mm/pageattr.c @@ -738,7 +738,7 @@ static int __should_split_large_page(pte_t *kpte, unsigned long address, { unsigned long numpages, pmask, psize, lpaddr, pfn, old_pfn; pgprot_t old_prot, new_prot, req_prot, chk_prot; - pte_t new_pte, old_pte, *tmp; + pte_t new_pte, *tmp; enum pg_level level; /* @@ -781,7 +781,7 @@ static int __should_split_large_page(pte_t *kpte, unsigned long address, * Convert protection attributes to 4k-format, as cpa->mask* are set * up accordingly. */ - old_pte = *kpte; + /* Clear PSE (aka _PAGE_PAT) and move PAT bit to correct position */ req_prot = pgprot_large_2_4k(old_prot); diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index 999d6d8f0bef..bc4bc7b2f075 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -685,9 +685,6 @@ void native_flush_tlb_others(const struct cpumask *cpumask, * that UV should be updated so that smp_call_function_many(), * etc, are optimal on UV. */ - unsigned int cpu; - - cpu = smp_processor_id(); cpumask = uv_flush_tlb_others(cpumask, info); if (cpumask) smp_call_function_many(cpumask, flush_tlb_func_remote, diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c index 30a5111ae5fd..527e69b12002 100644 --- a/arch/x86/pci/fixup.c +++ b/arch/x86/pci/fixup.c @@ -635,6 +635,22 @@ static void quirk_no_aersid(struct pci_dev *pdev) DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, PCI_CLASS_BRIDGE_PCI, 8, quirk_no_aersid); +static void quirk_intel_th_dnv(struct pci_dev *dev) +{ + struct resource *r = &dev->resource[4]; + + /* + * Denverton reports 2k of RTIT_BAR (intel_th resource 4), which + * appears to be 4 MB in reality. + */ + if (r->end == r->start + 0x7ff) { + r->start = 0; + r->end = 0x3fffff; + r->flags |= IORESOURCE_UNSET; + } +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x19e1, quirk_intel_th_dnv); + #ifdef CONFIG_PHYS_ADDR_T_64BIT #define AMD_141b_MMIO_BASE(x) (0x80 + (x) * 0x8) diff --git a/arch/x86/platform/uv/bios_uv.c b/arch/x86/platform/uv/bios_uv.c index eb33432f2f24..ef60d789c76e 100644 --- a/arch/x86/platform/uv/bios_uv.c +++ b/arch/x86/platform/uv/bios_uv.c @@ -45,7 +45,7 @@ static s64 __uv_bios_call(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3, * If EFI_OLD_MEMMAP is set, we need to fall back to using our old EFI * callback method, which uses efi_call() directly, with the kernel page tables: */ - if (unlikely(test_bit(EFI_OLD_MEMMAP, &efi.flags))) + if (unlikely(efi_enabled(EFI_OLD_MEMMAP))) ret = efi_call((void *)__va(tab->function), (u64)which, a1, a2, a3, a4, a5); else ret = efi_call_virt_pointer(tab, function, (u64)which, a1, a2, a3, a4, a5); @@ -85,18 +85,6 @@ s64 uv_bios_call_irqsave(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3, return ret; } -s64 uv_bios_call_reentrant(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3, - u64 a4, u64 a5) -{ - s64 ret; - - preempt_disable(); - ret = uv_bios_call(which, a1, a2, a3, a4, a5); - preempt_enable(); - - return ret; -} - long sn_partition_id; EXPORT_SYMBOL_GPL(sn_partition_id); @@ -207,7 +195,6 @@ int uv_bios_set_legacy_vga_target(bool decode, int domain, int bus) } EXPORT_SYMBOL_GPL(uv_bios_set_legacy_vga_target); -#ifdef CONFIG_EFI void uv_bios_init(void) { uv_systab = NULL; @@ -237,4 +224,3 @@ void uv_bios_init(void) } pr_info("UV: UVsystab: Revision:%x\n", uv_systab->revision); } -#endif diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c index a4130b84d1ff..2c53b0f19329 100644 --- a/arch/x86/platform/uv/tlb_uv.c +++ b/arch/x86/platform/uv/tlb_uv.c @@ -2010,8 +2010,7 @@ static void make_per_cpu_thp(struct bau_control *smaster) int cpu; size_t hpsz = sizeof(struct hub_and_pnode) * num_possible_cpus(); - smaster->thp = kmalloc_node(hpsz, GFP_KERNEL, smaster->osnode); - memset(smaster->thp, 0, hpsz); + smaster->thp = kzalloc_node(hpsz, GFP_KERNEL, smaster->osnode); for_each_present_cpu(cpu) { smaster->thp[cpu].pnode = uv_cpu_hub_info(cpu)->pnode; smaster->thp[cpu].uvhub = uv_cpu_hub_info(cpu)->numa_blade_id; @@ -2135,15 +2134,12 @@ static int __init summarize_uvhub_sockets(int nuvhubs, static int __init init_per_cpu(int nuvhubs, int base_part_pnode) { unsigned char *uvhub_mask; - void *vp; struct uvhub_desc *uvhub_descs; if (is_uv3_hub() || is_uv2_hub() || is_uv1_hub()) timeout_us = calculate_destination_timeout(); - vp = kmalloc_array(nuvhubs, sizeof(struct uvhub_desc), GFP_KERNEL); - uvhub_descs = (struct uvhub_desc *)vp; - memset(uvhub_descs, 0, nuvhubs * sizeof(struct uvhub_desc)); + uvhub_descs = kcalloc(nuvhubs, sizeof(struct uvhub_desc), GFP_KERNEL); uvhub_mask = kzalloc((nuvhubs+7)/8, GFP_KERNEL); if (get_cpu_topology(base_part_pnode, uvhub_descs, uvhub_mask)) diff --git a/arch/x86/realmode/rm/Makefile b/arch/x86/realmode/rm/Makefile index 4463fa72db94..96cb20de08af 100644 --- a/arch/x86/realmode/rm/Makefile +++ b/arch/x86/realmode/rm/Makefile @@ -47,7 +47,7 @@ $(obj)/pasyms.h: $(REALMODE_OBJS) FORCE targets += realmode.lds $(obj)/realmode.lds: $(obj)/pasyms.h -LDFLAGS_realmode.elf := --emit-relocs -T +LDFLAGS_realmode.elf := -m elf_i386 --emit-relocs -T CPPFLAGS_realmode.lds += -P -C -I$(objtree)/$(obj) targets += realmode.elf diff --git a/arch/x86/realmode/rm/realmode.lds.S b/arch/x86/realmode/rm/realmode.lds.S index df8e11e26bc3..3bb980800c58 100644 --- a/arch/x86/realmode/rm/realmode.lds.S +++ b/arch/x86/realmode/rm/realmode.lds.S @@ -9,7 +9,7 @@ #undef i386 -OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386") +OUTPUT_FORMAT("elf32-i386") OUTPUT_ARCH(i386) SECTIONS diff --git a/arch/x86/xen/mmu.h b/arch/x86/xen/mmu.h index a7e47cf7ec6c..6e4c6bd62203 100644 --- a/arch/x86/xen/mmu.h +++ b/arch/x86/xen/mmu.h @@ -17,8 +17,8 @@ bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn); void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags); -pte_t xen_ptep_modify_prot_start(struct mm_struct *mm, unsigned long addr, pte_t *ptep); -void xen_ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr, +pte_t xen_ptep_modify_prot_start(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep); +void xen_ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep, pte_t pte); unsigned long xen_read_cr2_direct(void); diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c index 0f4fe206dcc2..856a85814f00 100644 --- a/arch/x86/xen/mmu_pv.c +++ b/arch/x86/xen/mmu_pv.c @@ -306,20 +306,20 @@ static void xen_set_pte_at(struct mm_struct *mm, unsigned long addr, __xen_set_pte(ptep, pteval); } -pte_t xen_ptep_modify_prot_start(struct mm_struct *mm, +pte_t xen_ptep_modify_prot_start(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep) { /* Just return the pte as-is. We preserve the bits on commit */ - trace_xen_mmu_ptep_modify_prot_start(mm, addr, ptep, *ptep); + trace_xen_mmu_ptep_modify_prot_start(vma->vm_mm, addr, ptep, *ptep); return *ptep; } -void xen_ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr, +void xen_ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep, pte_t pte) { struct mmu_update u; - trace_xen_mmu_ptep_modify_prot_commit(mm, addr, ptep, pte); + trace_xen_mmu_ptep_modify_prot_commit(vma->vm_mm, addr, ptep, pte); xen_mc_batch(); u.ptr = virt_to_machine(ptep).maddr | MMU_PT_UPDATE_PRESERVE_AD; |