diff options
Diffstat (limited to 'arch/x86/platform')
32 files changed, 622 insertions, 737 deletions
diff --git a/arch/x86/platform/atom/punit_atom_debug.c b/arch/x86/platform/atom/punit_atom_debug.c index f8ed5f66cd20..44c30ce6360a 100644 --- a/arch/x86/platform/atom/punit_atom_debug.c +++ b/arch/x86/platform/atom/punit_atom_debug.c @@ -7,6 +7,9 @@ * Copyright (c) 2015, Intel Corporation. */ +#define pr_fmt(fmt) "punit_atom: " fmt + +#include <linux/acpi.h> #include <linux/module.h> #include <linux/init.h> #include <linux/device.h> @@ -117,33 +120,81 @@ static void punit_dbgfs_unregister(void) debugfs_remove_recursive(punit_dbg_file); } -#define X86_MATCH(model, data) \ - X86_MATCH_VENDOR_FAM_MODEL_FEATURE(INTEL, 6, INTEL_FAM6_##model, \ - X86_FEATURE_MWAIT, data) +#if defined(CONFIG_ACPI) && defined(CONFIG_SUSPEND) +static const struct punit_device *punit_dev; + +static void punit_s2idle_check(void) +{ + const struct punit_device *punit_devp; + u32 punit_pwr_status, dstate; + int status; + + for (punit_devp = punit_dev; punit_devp->name; punit_devp++) { + /* Skip MIO, it is on till the very last moment */ + if (punit_devp->reg == MIO_SS_PM) + continue; + + status = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ, + punit_devp->reg, &punit_pwr_status); + if (status) { + pr_err("%s read failed\n", punit_devp->name); + } else { + dstate = (punit_pwr_status >> punit_devp->sss_pos) & 3; + if (!dstate) + pr_err("%s is in D0 prior to s2idle\n", punit_devp->name); + } + } +} + +static struct acpi_s2idle_dev_ops punit_s2idle_ops = { + .check = punit_s2idle_check, +}; + +static void punit_s2idle_check_register(struct punit_device *punit_device) +{ + punit_dev = punit_device; + acpi_register_lps0_dev(&punit_s2idle_ops); +} + +static void punit_s2idle_check_unregister(void) +{ + acpi_unregister_lps0_dev(&punit_s2idle_ops); +} +#else +static void punit_s2idle_check_register(struct punit_device *punit_device) {} +static void punit_s2idle_check_unregister(void) {} +#endif + +#define X86_MATCH(vfm, data) \ + X86_MATCH_VFM_FEATURE(vfm, X86_FEATURE_MWAIT, data) static const struct x86_cpu_id intel_punit_cpu_ids[] = { - X86_MATCH(ATOM_SILVERMONT, &punit_device_byt), - X86_MATCH(ATOM_SILVERMONT_MID, &punit_device_tng), - X86_MATCH(ATOM_AIRMONT, &punit_device_cht), + X86_MATCH(INTEL_ATOM_SILVERMONT, &punit_device_byt), + X86_MATCH(INTEL_ATOM_SILVERMONT_MID, &punit_device_tng), + X86_MATCH(INTEL_ATOM_AIRMONT, &punit_device_cht), {} }; MODULE_DEVICE_TABLE(x86cpu, intel_punit_cpu_ids); static int __init punit_atom_debug_init(void) { + struct punit_device *punit_device; const struct x86_cpu_id *id; id = x86_match_cpu(intel_punit_cpu_ids); if (!id) return -ENODEV; - punit_dbgfs_register((struct punit_device *)id->driver_data); + punit_device = (struct punit_device *)id->driver_data; + punit_dbgfs_register(punit_device); + punit_s2idle_check_register(punit_device); return 0; } static void __exit punit_atom_debug_exit(void) { + punit_s2idle_check_unregister(); punit_dbgfs_unregister(); } diff --git a/arch/x86/platform/ce4100/ce4100.c b/arch/x86/platform/ce4100/ce4100.c index 40745664d92f..aaa7017416f7 100644 --- a/arch/x86/platform/ce4100/ce4100.c +++ b/arch/x86/platform/ce4100/ce4100.c @@ -5,19 +5,12 @@ * (C) Copyright 2010 Intel Corporation */ #include <linux/init.h> -#include <linux/kernel.h> -#include <linux/irq.h> #include <linux/reboot.h> -#include <linux/serial_reg.h> -#include <linux/serial_8250.h> #include <asm/ce4100.h> #include <asm/prom.h> #include <asm/setup.h> -#include <asm/i8259.h> #include <asm/io.h> -#include <asm/io_apic.h> -#include <asm/emergency-restart.h> /* * The CE4100 platform has an internal 8051 Microcontroller which is @@ -31,94 +24,6 @@ static void ce4100_power_off(void) outb(0x4, 0xcf9); } -#ifdef CONFIG_SERIAL_8250 - -static unsigned int mem_serial_in(struct uart_port *p, int offset) -{ - offset = offset << p->regshift; - return readl(p->membase + offset); -} - -/* - * The UART Tx interrupts are not set under some conditions and therefore serial - * transmission hangs. This is a silicon issue and has not been root caused. The - * workaround for this silicon issue checks UART_LSR_THRE bit and UART_LSR_TEMT - * bit of LSR register in interrupt handler to see whether at least one of these - * two bits is set, if so then process the transmit request. If this workaround - * is not applied, then the serial transmission may hang. This workaround is for - * errata number 9 in Errata - B step. -*/ - -static unsigned int ce4100_mem_serial_in(struct uart_port *p, int offset) -{ - unsigned int ret, ier, lsr; - - if (offset == UART_IIR) { - offset = offset << p->regshift; - ret = readl(p->membase + offset); - if (ret & UART_IIR_NO_INT) { - /* see if the TX interrupt should have really set */ - ier = mem_serial_in(p, UART_IER); - /* see if the UART's XMIT interrupt is enabled */ - if (ier & UART_IER_THRI) { - lsr = mem_serial_in(p, UART_LSR); - /* now check to see if the UART should be - generating an interrupt (but isn't) */ - if (lsr & (UART_LSR_THRE | UART_LSR_TEMT)) - ret &= ~UART_IIR_NO_INT; - } - } - } else - ret = mem_serial_in(p, offset); - return ret; -} - -static void ce4100_mem_serial_out(struct uart_port *p, int offset, int value) -{ - offset = offset << p->regshift; - writel(value, p->membase + offset); -} - -static void ce4100_serial_fixup(int port, struct uart_port *up, - u32 *capabilities) -{ -#ifdef CONFIG_EARLY_PRINTK - /* - * Over ride the legacy port configuration that comes from - * asm/serial.h. Using the ioport driver then switching to the - * PCI memmaped driver hangs the IOAPIC - */ - if (up->iotype != UPIO_MEM32) { - up->uartclk = 14745600; - up->mapbase = 0xdffe0200; - set_fixmap_nocache(FIX_EARLYCON_MEM_BASE, - up->mapbase & PAGE_MASK); - up->membase = - (void __iomem *)__fix_to_virt(FIX_EARLYCON_MEM_BASE); - up->membase += up->mapbase & ~PAGE_MASK; - up->mapbase += port * 0x100; - up->membase += port * 0x100; - up->iotype = UPIO_MEM32; - up->regshift = 2; - up->irq = 4; - } -#endif - up->iobase = 0; - up->serial_in = ce4100_mem_serial_in; - up->serial_out = ce4100_mem_serial_out; - - *capabilities |= (1 << 12); -} - -static __init void sdv_serial_fixup(void) -{ - serial8250_set_isa_configurator(ce4100_serial_fixup); -} - -#else -static inline void sdv_serial_fixup(void) {}; -#endif - static void __init sdv_arch_setup(void) { sdv_serial_fixup(); @@ -135,13 +40,12 @@ static void sdv_pci_init(void) */ void __init x86_ce4100_early_setup(void) { - x86_init.oem.arch_setup = sdv_arch_setup; - x86_init.resources.probe_roms = x86_init_noop; - x86_init.mpparse.get_smp_config = x86_init_uint_noop; - x86_init.mpparse.find_smp_config = x86_init_noop; - x86_init.mpparse.setup_ioapic_ids = setup_ioapic_ids_from_mpc_nocheck; - x86_init.pci.init = ce4100_pci_init; - x86_init.pci.init_irq = sdv_pci_init; + x86_init.oem.arch_setup = sdv_arch_setup; + x86_init.resources.probe_roms = x86_init_noop; + x86_init.mpparse.find_mptable = x86_init_noop; + x86_init.mpparse.early_parse_smp_cfg = x86_init_noop; + x86_init.pci.init = ce4100_pci_init; + x86_init.pci.init_irq = sdv_pci_init; /* * By default, the reboot method is ACPI which is supported by the diff --git a/arch/x86/platform/efi/Makefile b/arch/x86/platform/efi/Makefile index 543df9a1379d..500cab4a7f7c 100644 --- a/arch/x86/platform/efi/Makefile +++ b/arch/x86/platform/efi/Makefile @@ -5,5 +5,4 @@ GCOV_PROFILE := n obj-$(CONFIG_EFI) += memmap.o quirks.o efi.o efi_$(BITS).o \ efi_stub_$(BITS).o obj-$(CONFIG_EFI_MIXED) += efi_thunk_$(BITS).o -obj-$(CONFIG_EFI_FAKE_MEMMAP) += fake_mem.o obj-$(CONFIG_EFI_RUNTIME_MAP) += runtime-map.o diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index e9f99c56f3ce..463b784499a8 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -54,15 +54,11 @@ #include <asm/uv/uv.h> static unsigned long efi_systab_phys __initdata; -static unsigned long prop_phys = EFI_INVALID_TABLE_ADDR; -static unsigned long uga_phys = EFI_INVALID_TABLE_ADDR; static unsigned long efi_runtime, efi_nr_tables; unsigned long efi_fw_vendor, efi_config_table; static const efi_config_table_type_t arch_tables[] __initconst = { - {EFI_PROPERTIES_TABLE_GUID, &prop_phys, "PROP" }, - {UGA_IO_PROTOCOL_GUID, &uga_phys, "UGA" }, #ifdef CONFIG_X86_UV {UV_SYSTEM_TABLE_GUID, &uv_systab_phys, "UVsystab" }, #endif @@ -74,7 +70,6 @@ static const unsigned long * const efi_tables[] = { &efi.acpi20, &efi.smbios, &efi.smbios3, - &uga_phys, #ifdef CONFIG_X86_UV &uv_systab_phys, #endif @@ -82,7 +77,6 @@ static const unsigned long * const efi_tables[] = { &efi_runtime, &efi_config_table, &efi.esrt, - &prop_phys, &efi_mem_attr_table, #ifdef CONFIG_EFI_RCI2_TABLE &rci2_table_phys, @@ -226,8 +220,6 @@ int __init efi_memblock_x86_reserve_range(void) if (add_efi_memmap || do_efi_soft_reserve()) do_add_efi_memmap(); - efi_fake_memmap_early(); - WARN(efi.memmap.desc_version != 1, "Unexpected EFI_MEMORY_DESCRIPTOR version %ld", efi.memmap.desc_version); @@ -504,22 +496,6 @@ void __init efi_init(void) return; } - /* Parse the EFI Properties table if it exists */ - if (prop_phys != EFI_INVALID_TABLE_ADDR) { - efi_properties_table_t *tbl; - - tbl = early_memremap_ro(prop_phys, sizeof(*tbl)); - if (tbl == NULL) { - pr_err("Could not map Properties table!\n"); - } else { - if (tbl->memory_protection_attribute & - EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA) - set_bit(EFI_NX_PE_DATA, &efi.flags); - - early_memunmap(tbl, sizeof(*tbl)); - } - } - set_bit(EFI_RUNTIME_SERVICES, &efi.flags); efi_clean_memmap(); @@ -786,6 +762,7 @@ static void __init kexec_enter_virtual_mode(void) efi_sync_low_kernel_mappings(); efi_native_runtime_setup(); + efi_runtime_update_mappings(); #endif } @@ -911,13 +888,6 @@ bool efi_is_table_address(unsigned long phys_addr) return false; } -char *efi_systab_show_arch(char *str) -{ - if (uga_phys != EFI_INVALID_TABLE_ADDR) - str += sprintf(str, "UGA=0x%lx\n", uga_phys); - return str; -} - #define EFI_FIELD(var) efi_ ## var #define EFI_ATTR_SHOW(name) \ @@ -950,3 +920,8 @@ umode_t efi_attr_is_visible(struct kobject *kobj, struct attribute *attr, int n) } return attr->mode; } + +enum efi_secureboot_mode __x86_ima_efi_boot_mode(void) +{ + return boot_params.secure_boot; +} diff --git a/arch/x86/platform/efi/efi_32.c b/arch/x86/platform/efi/efi_32.c index e06a199423c0..b2cc7b4552a1 100644 --- a/arch/x86/platform/efi/efi_32.c +++ b/arch/x86/platform/efi/efi_32.c @@ -140,3 +140,15 @@ void __init efi_runtime_update_mappings(void) } } } + +void arch_efi_call_virt_setup(void) +{ + efi_fpu_begin(); + firmware_restrict_branch_speculation_start(); +} + +void arch_efi_call_virt_teardown(void) +{ + firmware_restrict_branch_speculation_end(); + efi_fpu_end(); +} diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c index 77f7ac3668cb..b4409df2105a 100644 --- a/arch/x86/platform/efi/efi_64.c +++ b/arch/x86/platform/efi/efi_64.c @@ -73,7 +73,7 @@ int __init efi_alloc_page_tables(void) gfp_t gfp_mask; gfp_mask = GFP_KERNEL | __GFP_ZERO; - efi_pgd = (pgd_t *)__get_free_pages(gfp_mask, PGD_ALLOCATION_ORDER); + efi_pgd = (pgd_t *)__get_free_pages(gfp_mask, pgd_allocation_order()); if (!efi_pgd) goto fail; @@ -89,6 +89,7 @@ int __init efi_alloc_page_tables(void) efi_mm.pgd = efi_pgd; mm_init_cpumask(&efi_mm); init_new_context(NULL, &efi_mm); + set_notrack_mm(&efi_mm); return 0; @@ -96,7 +97,7 @@ free_p4d: if (pgtable_l5_enabled()) free_page((unsigned long)pgd_page_vaddr(*pgd)); free_pgd: - free_pages((unsigned long)efi_pgd, PGD_ALLOCATION_ORDER); + free_pages((unsigned long)efi_pgd, pgd_allocation_order()); fail: return -ENOMEM; } @@ -215,8 +216,8 @@ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) * When SEV-ES is active, the GHCB as set by the kernel will be used * by firmware. Create a 1:1 unencrypted mapping for each GHCB. */ - if (sev_es_efi_map_ghcbs(pgd)) { - pr_err("Failed to create 1:1 mapping for the GHCBs!\n"); + if (sev_es_efi_map_ghcbs_cas(pgd)) { + pr_err("Failed to create 1:1 mapping for the GHCBs and CAs!\n"); return 1; } @@ -412,51 +413,9 @@ static int __init efi_update_mem_attr(struct mm_struct *mm, efi_memory_desc_t *m void __init efi_runtime_update_mappings(void) { - efi_memory_desc_t *md; - - /* - * Use the EFI Memory Attribute Table for mapping permissions if it - * exists, since it is intended to supersede EFI_PROPERTIES_TABLE. - */ if (efi_enabled(EFI_MEM_ATTR)) { efi_disable_ibt_for_runtime = false; efi_memattr_apply_permissions(NULL, efi_update_mem_attr); - return; - } - - /* - * EFI_MEMORY_ATTRIBUTES_TABLE is intended to replace - * EFI_PROPERTIES_TABLE. So, use EFI_PROPERTIES_TABLE to update - * permissions only if EFI_MEMORY_ATTRIBUTES_TABLE is not - * published by the firmware. Even if we find a buggy implementation of - * EFI_MEMORY_ATTRIBUTES_TABLE, don't fall back to - * EFI_PROPERTIES_TABLE, because of the same reason. - */ - - if (!efi_enabled(EFI_NX_PE_DATA)) - return; - - for_each_efi_memory_desc(md) { - unsigned long pf = 0; - - if (!(md->attribute & EFI_MEMORY_RUNTIME)) - continue; - - if (!(md->attribute & EFI_MEMORY_WB)) - pf |= _PAGE_PCD; - - if ((md->attribute & EFI_MEMORY_XP) || - (md->type == EFI_RUNTIME_SERVICES_DATA)) - pf |= _PAGE_NX; - - if (!(md->attribute & EFI_MEMORY_RO) && - (md->type != EFI_RUNTIME_SERVICES_CODE)) - pf |= _PAGE_RW; - - if (cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT)) - pf |= _PAGE_ENC; - - efi_update_mappings(md, pf); } } @@ -474,17 +433,29 @@ void __init efi_dump_pagetable(void) * can not change under us. * It should be ensured that there are no concurrent calls to this function. */ -void efi_enter_mm(void) +static void efi_enter_mm(void) +{ + efi_prev_mm = use_temporary_mm(&efi_mm); +} + +static void efi_leave_mm(void) +{ + unuse_temporary_mm(efi_prev_mm); +} + +void arch_efi_call_virt_setup(void) { - efi_prev_mm = current->active_mm; - current->active_mm = &efi_mm; - switch_mm(efi_prev_mm, &efi_mm, NULL); + efi_sync_low_kernel_mappings(); + efi_fpu_begin(); + firmware_restrict_branch_speculation_start(); + efi_enter_mm(); } -void efi_leave_mm(void) +void arch_efi_call_virt_teardown(void) { - current->active_mm = efi_prev_mm; - switch_mm(&efi_mm, efi_prev_mm, NULL); + efi_leave_mm(); + firmware_restrict_branch_speculation_end(); + efi_fpu_end(); } static DEFINE_SPINLOCK(efi_runtime_lock); diff --git a/arch/x86/platform/efi/efi_stub_64.S b/arch/x86/platform/efi/efi_stub_64.S index 2206b8bc47b8..f0a5fba0717e 100644 --- a/arch/x86/platform/efi/efi_stub_64.S +++ b/arch/x86/platform/efi/efi_stub_64.S @@ -11,6 +11,10 @@ #include <asm/nospec-branch.h> SYM_FUNC_START(__efi_call) + /* + * The EFI code doesn't have any CFI, annotate away the CFI violation. + */ + ANNOTATE_NOCFI_SYM pushq %rbp movq %rsp, %rbp and $~0xf, %rsp diff --git a/arch/x86/platform/efi/fake_mem.c b/arch/x86/platform/efi/fake_mem.c deleted file mode 100644 index 41d57cad3d84..000000000000 --- a/arch/x86/platform/efi/fake_mem.c +++ /dev/null @@ -1,197 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * fake_mem.c - * - * Copyright (C) 2015 FUJITSU LIMITED - * Author: Taku Izumi <izumi.taku@jp.fujitsu.com> - * - * This code introduces new boot option named "efi_fake_mem" - * By specifying this parameter, you can add arbitrary attribute to - * specific memory range by updating original (firmware provided) EFI - * memmap. - */ - -#include <linux/kernel.h> -#include <linux/efi.h> -#include <linux/init.h> -#include <linux/memblock.h> -#include <linux/types.h> -#include <linux/sort.h> -#include <asm/e820/api.h> -#include <asm/efi.h> - -#define EFI_MAX_FAKEMEM CONFIG_EFI_MAX_FAKE_MEM - -static struct efi_mem_range efi_fake_mems[EFI_MAX_FAKEMEM]; -static int nr_fake_mem; - -static int __init cmp_fake_mem(const void *x1, const void *x2) -{ - const struct efi_mem_range *m1 = x1; - const struct efi_mem_range *m2 = x2; - - if (m1->range.start < m2->range.start) - return -1; - if (m1->range.start > m2->range.start) - return 1; - return 0; -} - -static void __init efi_fake_range(struct efi_mem_range *efi_range) -{ - struct efi_memory_map_data data = { 0 }; - int new_nr_map = efi.memmap.nr_map; - efi_memory_desc_t *md; - void *new_memmap; - - /* count up the number of EFI memory descriptor */ - for_each_efi_memory_desc(md) - new_nr_map += efi_memmap_split_count(md, &efi_range->range); - - /* allocate memory for new EFI memmap */ - if (efi_memmap_alloc(new_nr_map, &data) != 0) - return; - - /* create new EFI memmap */ - new_memmap = early_memremap(data.phys_map, data.size); - if (!new_memmap) { - __efi_memmap_free(data.phys_map, data.size, data.flags); - return; - } - - efi_memmap_insert(&efi.memmap, new_memmap, efi_range); - - /* swap into new EFI memmap */ - early_memunmap(new_memmap, data.size); - - efi_memmap_install(&data); -} - -void __init efi_fake_memmap(void) -{ - int i; - - if (!efi_enabled(EFI_MEMMAP) || !nr_fake_mem) - return; - - for (i = 0; i < nr_fake_mem; i++) - efi_fake_range(&efi_fake_mems[i]); - - /* print new EFI memmap */ - efi_print_memmap(); -} - -static int __init setup_fake_mem(char *p) -{ - u64 start = 0, mem_size = 0, attribute = 0; - int i; - - if (!p) - return -EINVAL; - - while (*p != '\0') { - mem_size = memparse(p, &p); - if (*p == '@') - start = memparse(p+1, &p); - else - break; - - if (*p == ':') - attribute = simple_strtoull(p+1, &p, 0); - else - break; - - if (nr_fake_mem >= EFI_MAX_FAKEMEM) - break; - - efi_fake_mems[nr_fake_mem].range.start = start; - efi_fake_mems[nr_fake_mem].range.end = start + mem_size - 1; - efi_fake_mems[nr_fake_mem].attribute = attribute; - nr_fake_mem++; - - if (*p == ',') - p++; - } - - sort(efi_fake_mems, nr_fake_mem, sizeof(struct efi_mem_range), - cmp_fake_mem, NULL); - - for (i = 0; i < nr_fake_mem; i++) - pr_info("efi_fake_mem: add attr=0x%016llx to [mem 0x%016llx-0x%016llx]", - efi_fake_mems[i].attribute, efi_fake_mems[i].range.start, - efi_fake_mems[i].range.end); - - return *p == '\0' ? 0 : -EINVAL; -} - -early_param("efi_fake_mem", setup_fake_mem); - -void __init efi_fake_memmap_early(void) -{ - int i; - - /* - * The late efi_fake_mem() call can handle all requests if - * EFI_MEMORY_SP support is disabled. - */ - if (!efi_soft_reserve_enabled()) - return; - - if (!efi_enabled(EFI_MEMMAP) || !nr_fake_mem) - return; - - /* - * Given that efi_fake_memmap() needs to perform memblock - * allocations it needs to run after e820__memblock_setup(). - * However, if efi_fake_mem specifies EFI_MEMORY_SP for a given - * address range that potentially needs to mark the memory as - * reserved prior to e820__memblock_setup(). Update e820 - * directly if EFI_MEMORY_SP is specified for an - * EFI_CONVENTIONAL_MEMORY descriptor. - */ - for (i = 0; i < nr_fake_mem; i++) { - struct efi_mem_range *mem = &efi_fake_mems[i]; - efi_memory_desc_t *md; - u64 m_start, m_end; - - if ((mem->attribute & EFI_MEMORY_SP) == 0) - continue; - - m_start = mem->range.start; - m_end = mem->range.end; - for_each_efi_memory_desc(md) { - u64 start, end, size; - - if (md->type != EFI_CONVENTIONAL_MEMORY) - continue; - - start = md->phys_addr; - end = md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT) - 1; - - if (m_start <= end && m_end >= start) - /* fake range overlaps descriptor */; - else - continue; - - /* - * Trim the boundary of the e820 update to the - * descriptor in case the fake range overlaps - * !EFI_CONVENTIONAL_MEMORY - */ - start = max(start, m_start); - end = min(end, m_end); - size = end - start + 1; - - if (end <= start) - continue; - - /* - * Ensure each efi_fake_mem instance results in - * a unique e820 resource - */ - e820__range_remove(start, size, E820_TYPE_RAM, 1); - e820__range_add(start, size, E820_TYPE_SOFT_RESERVED); - e820__update_table(e820_table); - } - } -} diff --git a/arch/x86/platform/efi/memmap.c b/arch/x86/platform/efi/memmap.c index 4ef20b49eb5e..023697c88910 100644 --- a/arch/x86/platform/efi/memmap.c +++ b/arch/x86/platform/efi/memmap.c @@ -30,6 +30,7 @@ static phys_addr_t __init __efi_memmap_alloc_late(unsigned long size) return PFN_PHYS(page_to_pfn(p)); } +static void __init __efi_memmap_free(u64 phys, unsigned long size, unsigned long flags) { if (flags & EFI_MEMMAP_MEMBLOCK) { @@ -41,7 +42,7 @@ void __init __efi_memmap_free(u64 phys, unsigned long size, unsigned long flags) struct page *p = pfn_to_page(PHYS_PFN(phys)); unsigned int order = get_order(size); - free_pages((unsigned long) page_address(p), order); + __free_pages(p, order); } } @@ -92,12 +93,22 @@ int __init efi_memmap_alloc(unsigned int num_entries, */ int __init efi_memmap_install(struct efi_memory_map_data *data) { + unsigned long size = efi.memmap.desc_size * efi.memmap.nr_map; + unsigned long flags = efi.memmap.flags; + u64 phys = efi.memmap.phys_map; + int ret; + efi_memmap_unmap(); if (efi_enabled(EFI_PARAVIRT)) return 0; - return __efi_memmap_init(data); + ret = __efi_memmap_init(data); + if (ret) + return ret; + + __efi_memmap_free(phys, size, flags); + return 0; } /** diff --git a/arch/x86/platform/efi/quirks.c b/arch/x86/platform/efi/quirks.c index f0cc00032751..553f330198f2 100644 --- a/arch/x86/platform/efi/quirks.c +++ b/arch/x86/platform/efi/quirks.c @@ -561,6 +561,11 @@ int __init efi_reuse_config(u64 tables, int nr_tables) if (!efi_guidcmp(guid, SMBIOS_TABLE_GUID)) ((efi_config_table_64_t *)p)->table = data->smbios; + + /* Do not bother to play with mem attr table across kexec */ + if (!efi_guidcmp(guid, EFI_MEMORY_ATTRIBUTES_TABLE_GUID)) + ((efi_config_table_64_t *)p)->table = EFI_INVALID_TABLE_ADDR; + p += sz; } early_memunmap(tablep, nr_tables * sz); @@ -656,8 +661,7 @@ static int qrk_capsule_setup_info(struct capsule_info *cap_info, void **pkbuff, } static const struct x86_cpu_id efi_capsule_quirk_ids[] = { - X86_MATCH_VENDOR_FAM_MODEL(INTEL, 5, INTEL_FAM5_QUARK_X1000, - &qrk_capsule_setup_info), + X86_MATCH_VFM(INTEL_QUARK_X1000, &qrk_capsule_setup_info), { } }; diff --git a/arch/x86/platform/geode/Makefile b/arch/x86/platform/geode/Makefile index a8a6b1dedb01..34b53e97a0ad 100644 --- a/arch/x86/platform/geode/Makefile +++ b/arch/x86/platform/geode/Makefile @@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only +obj-$(CONFIG_GEODE_COMMON) += geode-common.o obj-$(CONFIG_ALIX) += alix.o obj-$(CONFIG_NET5501) += net5501.o obj-$(CONFIG_GEOS) += geos.o diff --git a/arch/x86/platform/geode/alix.c b/arch/x86/platform/geode/alix.c index b39bf3b5e108..be65cd704e21 100644 --- a/arch/x86/platform/geode/alix.c +++ b/arch/x86/platform/geode/alix.c @@ -18,15 +18,12 @@ #include <linux/io.h> #include <linux/string.h> #include <linux/moduleparam.h> -#include <linux/leds.h> -#include <linux/platform_device.h> -#include <linux/input.h> -#include <linux/gpio_keys.h> -#include <linux/gpio/machine.h> #include <linux/dmi.h> #include <asm/geode.h> +#include "geode-common.h" + #define BIOS_SIGNATURE_TINYBIOS 0xf0000 #define BIOS_SIGNATURE_COREBOOT 0x500 #define BIOS_REGION_SIZE 0x10000 @@ -41,79 +38,16 @@ module_param(force, bool, 0444); /* FIXME: Award bios is not automatically detected as Alix platform */ MODULE_PARM_DESC(force, "Force detection as ALIX.2/ALIX.3 platform"); -static struct gpio_keys_button alix_gpio_buttons[] = { - { - .code = KEY_RESTART, - .gpio = 24, - .active_low = 1, - .desc = "Reset button", - .type = EV_KEY, - .wakeup = 0, - .debounce_interval = 100, - .can_disable = 0, - } -}; -static struct gpio_keys_platform_data alix_buttons_data = { - .buttons = alix_gpio_buttons, - .nbuttons = ARRAY_SIZE(alix_gpio_buttons), - .poll_interval = 20, -}; - -static struct platform_device alix_buttons_dev = { - .name = "gpio-keys-polled", - .id = 1, - .dev = { - .platform_data = &alix_buttons_data, - } -}; - -static struct gpio_led alix_leds[] = { - { - .name = "alix:1", - .default_trigger = "default-on", - }, - { - .name = "alix:2", - .default_trigger = "default-off", - }, - { - .name = "alix:3", - .default_trigger = "default-off", - }, -}; - -static struct gpio_led_platform_data alix_leds_data = { - .num_leds = ARRAY_SIZE(alix_leds), - .leds = alix_leds, -}; - -static struct gpiod_lookup_table alix_leds_gpio_table = { - .dev_id = "leds-gpio", - .table = { - /* The Geode GPIOs should be on the CS5535 companion chip */ - GPIO_LOOKUP_IDX("cs5535-gpio", 6, NULL, 0, GPIO_ACTIVE_LOW), - GPIO_LOOKUP_IDX("cs5535-gpio", 25, NULL, 1, GPIO_ACTIVE_LOW), - GPIO_LOOKUP_IDX("cs5535-gpio", 27, NULL, 2, GPIO_ACTIVE_LOW), - { } - }, -}; - -static struct platform_device alix_leds_dev = { - .name = "leds-gpio", - .id = -1, - .dev.platform_data = &alix_leds_data, -}; - -static struct platform_device *alix_devs[] __initdata = { - &alix_buttons_dev, - &alix_leds_dev, +static const struct geode_led alix_leds[] __initconst = { + { 6, true }, + { 25, false }, + { 27, false }, }; static void __init register_alix(void) { - /* Setup LED control through leds-gpio driver */ - gpiod_add_lookup_table(&alix_leds_gpio_table); - platform_add_devices(alix_devs, ARRAY_SIZE(alix_devs)); + geode_create_restart_key(24); + geode_create_leds("alix", alix_leds, ARRAY_SIZE(alix_leds)); } static bool __init alix_present(unsigned long bios_phys, diff --git a/arch/x86/platform/geode/geode-common.c b/arch/x86/platform/geode/geode-common.c new file mode 100644 index 000000000000..8fd78e60bf15 --- /dev/null +++ b/arch/x86/platform/geode/geode-common.c @@ -0,0 +1,178 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Shared helpers to register GPIO-connected buttons and LEDs + * on AMD Geode boards. + */ + +#include <linux/err.h> +#include <linux/gpio/machine.h> +#include <linux/gpio/property.h> +#include <linux/input.h> +#include <linux/leds.h> +#include <linux/platform_device.h> +#include <linux/slab.h> + +#include "geode-common.h" + +static const struct software_node geode_gpiochip_node = { + .name = "cs5535-gpio", +}; + +static const struct property_entry geode_gpio_keys_props[] = { + PROPERTY_ENTRY_U32("poll-interval", 20), + { } +}; + +static const struct software_node geode_gpio_keys_node = { + .name = "geode-gpio-keys", + .properties = geode_gpio_keys_props, +}; + +static struct property_entry geode_restart_key_props[] = { + { /* Placeholder for GPIO property */ }, + PROPERTY_ENTRY_U32("linux,code", KEY_RESTART), + PROPERTY_ENTRY_STRING("label", "Reset button"), + PROPERTY_ENTRY_U32("debounce-interval", 100), + { } +}; + +static const struct software_node geode_restart_key_node = { + .parent = &geode_gpio_keys_node, + .properties = geode_restart_key_props, +}; + +static const struct software_node *geode_gpio_keys_swnodes[] __initconst = { + &geode_gpiochip_node, + &geode_gpio_keys_node, + &geode_restart_key_node, + NULL +}; + +/* + * Creates gpio-keys-polled device for the restart key. + * + * Note that it needs to be called first, before geode_create_leds(), + * because it registers gpiochip software node used by both gpio-keys and + * leds-gpio devices. + */ +int __init geode_create_restart_key(unsigned int pin) +{ + struct platform_device_info keys_info = { + .name = "gpio-keys-polled", + .id = 1, + }; + struct platform_device *pd; + int err; + + geode_restart_key_props[0] = PROPERTY_ENTRY_GPIO("gpios", + &geode_gpiochip_node, + pin, GPIO_ACTIVE_LOW); + + err = software_node_register_node_group(geode_gpio_keys_swnodes); + if (err) { + pr_err("failed to register gpio-keys software nodes: %d\n", err); + return err; + } + + keys_info.fwnode = software_node_fwnode(&geode_gpio_keys_node); + + pd = platform_device_register_full(&keys_info); + err = PTR_ERR_OR_ZERO(pd); + if (err) { + pr_err("failed to create gpio-keys device: %d\n", err); + software_node_unregister_node_group(geode_gpio_keys_swnodes); + return err; + } + + return 0; +} + +static const struct software_node geode_gpio_leds_node = { + .name = "geode-leds", +}; + +#define MAX_LEDS 3 + +int __init geode_create_leds(const char *label, const struct geode_led *leds, + unsigned int n_leds) +{ + const struct software_node *group[MAX_LEDS + 2] = { 0 }; + struct software_node *swnodes; + struct property_entry *props; + struct platform_device_info led_info = { + .name = "leds-gpio", + .id = PLATFORM_DEVID_NONE, + }; + struct platform_device *led_dev; + const char *node_name; + int err; + int i; + + if (n_leds > MAX_LEDS) { + pr_err("%s: too many LEDs\n", __func__); + return -EINVAL; + } + + swnodes = kcalloc(n_leds, sizeof(*swnodes), GFP_KERNEL); + if (!swnodes) + return -ENOMEM; + + /* + * Each LED is represented by 3 properties: "gpios", + * "linux,default-trigger", and am empty terminator. + */ + props = kcalloc(n_leds * 3, sizeof(*props), GFP_KERNEL); + if (!props) { + err = -ENOMEM; + goto err_free_swnodes; + } + + group[0] = &geode_gpio_leds_node; + for (i = 0; i < n_leds; i++) { + node_name = kasprintf(GFP_KERNEL, "%s:%d", label, i); + if (!node_name) { + err = -ENOMEM; + goto err_free_names; + } + + props[i * 3 + 0] = + PROPERTY_ENTRY_GPIO("gpios", &geode_gpiochip_node, + leds[i].pin, GPIO_ACTIVE_LOW); + props[i * 3 + 1] = + PROPERTY_ENTRY_STRING("linux,default-trigger", + leds[i].default_on ? + "default-on" : "default-off"); + /* props[i * 3 + 2] is an empty terminator */ + + swnodes[i] = SOFTWARE_NODE(node_name, &props[i * 3], + &geode_gpio_leds_node); + group[i + 1] = &swnodes[i]; + } + + err = software_node_register_node_group(group); + if (err) { + pr_err("failed to register LED software nodes: %d\n", err); + goto err_free_names; + } + + led_info.fwnode = software_node_fwnode(&geode_gpio_leds_node); + + led_dev = platform_device_register_full(&led_info); + err = PTR_ERR_OR_ZERO(led_dev); + if (err) { + pr_err("failed to create LED device: %d\n", err); + goto err_unregister_group; + } + + return 0; + +err_unregister_group: + software_node_unregister_node_group(group); +err_free_names: + while (--i >= 0) + kfree(swnodes[i].name); + kfree(props); +err_free_swnodes: + kfree(swnodes); + return err; +} diff --git a/arch/x86/platform/geode/geode-common.h b/arch/x86/platform/geode/geode-common.h new file mode 100644 index 000000000000..9e0afd34bfad --- /dev/null +++ b/arch/x86/platform/geode/geode-common.h @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Shared helpers to register GPIO-connected buttons and LEDs + * on AMD Geode boards. + */ + +#ifndef __PLATFORM_GEODE_COMMON_H +#define __PLATFORM_GEODE_COMMON_H + +#include <linux/property.h> + +struct geode_led { + unsigned int pin; + bool default_on; +}; + +int geode_create_restart_key(unsigned int pin); +int geode_create_leds(const char *label, const struct geode_led *leds, + unsigned int n_leds); + +#endif /* __PLATFORM_GEODE_COMMON_H */ diff --git a/arch/x86/platform/geode/geos.c b/arch/x86/platform/geode/geos.c index d263528c90bb..98027fb1ec32 100644 --- a/arch/x86/platform/geode/geos.c +++ b/arch/x86/platform/geode/geos.c @@ -16,88 +16,22 @@ #include <linux/init.h> #include <linux/io.h> #include <linux/string.h> -#include <linux/leds.h> -#include <linux/platform_device.h> -#include <linux/input.h> -#include <linux/gpio_keys.h> -#include <linux/gpio/machine.h> #include <linux/dmi.h> #include <asm/geode.h> -static struct gpio_keys_button geos_gpio_buttons[] = { - { - .code = KEY_RESTART, - .gpio = 3, - .active_low = 1, - .desc = "Reset button", - .type = EV_KEY, - .wakeup = 0, - .debounce_interval = 100, - .can_disable = 0, - } -}; -static struct gpio_keys_platform_data geos_buttons_data = { - .buttons = geos_gpio_buttons, - .nbuttons = ARRAY_SIZE(geos_gpio_buttons), - .poll_interval = 20, -}; - -static struct platform_device geos_buttons_dev = { - .name = "gpio-keys-polled", - .id = 1, - .dev = { - .platform_data = &geos_buttons_data, - } -}; - -static struct gpio_led geos_leds[] = { - { - .name = "geos:1", - .default_trigger = "default-on", - }, - { - .name = "geos:2", - .default_trigger = "default-off", - }, - { - .name = "geos:3", - .default_trigger = "default-off", - }, -}; - -static struct gpio_led_platform_data geos_leds_data = { - .num_leds = ARRAY_SIZE(geos_leds), - .leds = geos_leds, -}; - -static struct gpiod_lookup_table geos_leds_gpio_table = { - .dev_id = "leds-gpio", - .table = { - /* The Geode GPIOs should be on the CS5535 companion chip */ - GPIO_LOOKUP_IDX("cs5535-gpio", 6, NULL, 0, GPIO_ACTIVE_LOW), - GPIO_LOOKUP_IDX("cs5535-gpio", 25, NULL, 1, GPIO_ACTIVE_LOW), - GPIO_LOOKUP_IDX("cs5535-gpio", 27, NULL, 2, GPIO_ACTIVE_LOW), - { } - }, -}; - -static struct platform_device geos_leds_dev = { - .name = "leds-gpio", - .id = -1, - .dev.platform_data = &geos_leds_data, -}; +#include "geode-common.h" -static struct platform_device *geos_devs[] __initdata = { - &geos_buttons_dev, - &geos_leds_dev, +static const struct geode_led geos_leds[] __initconst = { + { 6, true }, + { 25, false }, + { 27, false }, }; static void __init register_geos(void) { - /* Setup LED control through leds-gpio driver */ - gpiod_add_lookup_table(&geos_leds_gpio_table); - platform_add_devices(geos_devs, ARRAY_SIZE(geos_devs)); + geode_create_restart_key(3); + geode_create_leds("geos", geos_leds, ARRAY_SIZE(geos_leds)); } static int __init geos_init(void) diff --git a/arch/x86/platform/geode/net5501.c b/arch/x86/platform/geode/net5501.c index 558384acd777..c9cee7dea99b 100644 --- a/arch/x86/platform/geode/net5501.c +++ b/arch/x86/platform/geode/net5501.c @@ -16,80 +16,25 @@ #include <linux/init.h> #include <linux/io.h> #include <linux/string.h> -#include <linux/leds.h> -#include <linux/platform_device.h> #include <linux/input.h> -#include <linux/gpio_keys.h> #include <linux/gpio/machine.h> +#include <linux/gpio/property.h> #include <asm/geode.h> +#include "geode-common.h" + #define BIOS_REGION_BASE 0xffff0000 #define BIOS_REGION_SIZE 0x00010000 -static struct gpio_keys_button net5501_gpio_buttons[] = { - { - .code = KEY_RESTART, - .gpio = 24, - .active_low = 1, - .desc = "Reset button", - .type = EV_KEY, - .wakeup = 0, - .debounce_interval = 100, - .can_disable = 0, - } -}; -static struct gpio_keys_platform_data net5501_buttons_data = { - .buttons = net5501_gpio_buttons, - .nbuttons = ARRAY_SIZE(net5501_gpio_buttons), - .poll_interval = 20, -}; - -static struct platform_device net5501_buttons_dev = { - .name = "gpio-keys-polled", - .id = 1, - .dev = { - .platform_data = &net5501_buttons_data, - } -}; - -static struct gpio_led net5501_leds[] = { - { - .name = "net5501:1", - .default_trigger = "default-on", - }, -}; - -static struct gpio_led_platform_data net5501_leds_data = { - .num_leds = ARRAY_SIZE(net5501_leds), - .leds = net5501_leds, -}; - -static struct gpiod_lookup_table net5501_leds_gpio_table = { - .dev_id = "leds-gpio", - .table = { - /* The Geode GPIOs should be on the CS5535 companion chip */ - GPIO_LOOKUP_IDX("cs5535-gpio", 6, NULL, 0, GPIO_ACTIVE_HIGH), - { } - }, -}; - -static struct platform_device net5501_leds_dev = { - .name = "leds-gpio", - .id = -1, - .dev.platform_data = &net5501_leds_data, -}; - -static struct platform_device *net5501_devs[] __initdata = { - &net5501_buttons_dev, - &net5501_leds_dev, +static const struct geode_led net5501_leds[] __initconst = { + { 6, true }, }; static void __init register_net5501(void) { - /* Setup LED control through leds-gpio driver */ - gpiod_add_lookup_table(&net5501_leds_gpio_table); - platform_add_devices(net5501_devs, ARRAY_SIZE(net5501_devs)); + geode_create_restart_key(24); + geode_create_leds("net5501", net5501_leds, ARRAY_SIZE(net5501_leds)); } struct net5501_board { diff --git a/arch/x86/platform/intel-mid/intel-mid.c b/arch/x86/platform/intel-mid/intel-mid.c index f4592dc7a1c1..a8e75f8c14fd 100644 --- a/arch/x86/platform/intel-mid/intel-mid.c +++ b/arch/x86/platform/intel-mid/intel-mid.c @@ -22,13 +22,15 @@ #include <asm/mpspec_def.h> #include <asm/hw_irq.h> #include <asm/apic.h> +#include <asm/cpu_device_id.h> #include <asm/io_apic.h> #include <asm/intel-mid.h> #include <asm/io.h> #include <asm/i8259.h> -#include <asm/intel_scu_ipc.h> #include <asm/reboot.h> +#include <linux/platform_data/x86/intel_scu_ipc.h> + #define IPCMSG_COLD_OFF 0x80 /* Only for Tangier */ #define IPCMSG_COLD_RESET 0xF1 @@ -55,9 +57,8 @@ static void __init intel_mid_time_init(void) static void intel_mid_arch_setup(void) { - switch (boot_cpu_data.x86_model) { - case 0x3C: - case 0x4A: + switch (boot_cpu_data.x86_vfm) { + case INTEL_ATOM_SILVERMONT_MID: x86_platform.legacy.rtc = 1; break; default: @@ -118,7 +119,8 @@ void __init x86_intel_mid_early_setup(void) machine_ops.emergency_restart = intel_mid_reboot; /* Avoid searching for BIOS MP tables */ - x86_init.mpparse.find_smp_config = x86_init_noop; - x86_init.mpparse.get_smp_config = x86_init_uint_noop; + x86_init.mpparse.find_mptable = x86_init_noop; + x86_init.mpparse.early_parse_smp_cfg = x86_init_noop; + x86_init.mpparse.parse_smp_cfg = x86_init_noop; set_bit(MP_BUS_ISA, mp_bus_not_pci); } diff --git a/arch/x86/platform/intel-mid/pwr.c b/arch/x86/platform/intel-mid/pwr.c index 27288d8d3f71..cd7e0c71adde 100644 --- a/arch/x86/platform/intel-mid/pwr.c +++ b/arch/x86/platform/intel-mid/pwr.c @@ -358,18 +358,18 @@ static int mid_pwr_probe(struct pci_dev *pdev, const struct pci_device_id *id) return ret; } - ret = pcim_iomap_regions(pdev, 1 << 0, pci_name(pdev)); - if (ret) { - dev_err(&pdev->dev, "I/O memory remapping failed\n"); - return ret; - } - pwr = devm_kzalloc(dev, sizeof(*pwr), GFP_KERNEL); if (!pwr) return -ENOMEM; + pwr->regs = pcim_iomap_region(pdev, 0, "intel_mid_pwr"); + ret = PTR_ERR_OR_ZERO(pwr->regs); + if (ret) { + dev_err(&pdev->dev, "Could not request / ioremap I/O-Mem: %d\n", ret); + return ret; + } + pwr->dev = dev; - pwr->regs = pcim_iomap_table(pdev)[0]; pwr->irq = pdev->irq; mutex_init(&pwr->lock); diff --git a/arch/x86/platform/intel-quark/imr.c b/arch/x86/platform/intel-quark/imr.c index d3d456925b2a..ee25b032c0b3 100644 --- a/arch/x86/platform/intel-quark/imr.c +++ b/arch/x86/platform/intel-quark/imr.c @@ -569,7 +569,7 @@ static void __init imr_fixup_memmap(struct imr_device *idev) } static const struct x86_cpu_id imr_ids[] __initconst = { - X86_MATCH_VENDOR_FAM_MODEL(INTEL, 5, INTEL_FAM5_QUARK_X1000, NULL), + X86_MATCH_VFM(INTEL_QUARK_X1000, NULL), {} }; diff --git a/arch/x86/platform/intel-quark/imr_selftest.c b/arch/x86/platform/intel-quark/imr_selftest.c index 761f3689f60a..657925b0f428 100644 --- a/arch/x86/platform/intel-quark/imr_selftest.c +++ b/arch/x86/platform/intel-quark/imr_selftest.c @@ -6,7 +6,7 @@ * Copyright(c) 2015 Bryan O'Donoghue <pure.logic@nexus-software.ie> * * IMR self test. The purpose of this module is to run a set of tests on the - * IMR API to validate it's sanity. We check for overlapping, reserved + * IMR API to validate its sanity. We check for overlapping, reserved * addresses and setup/teardown sanity. * */ @@ -105,7 +105,7 @@ static void __init imr_self_test(void) } static const struct x86_cpu_id imr_ids[] __initconst = { - X86_MATCH_VENDOR_FAM_MODEL(INTEL, 5, INTEL_FAM5_QUARK_X1000, NULL), + X86_MATCH_VFM(INTEL_QUARK_X1000, NULL), {} }; diff --git a/arch/x86/platform/intel/iosf_mbi.c b/arch/x86/platform/intel/iosf_mbi.c index fdd49d70b437..40ae94db20d8 100644 --- a/arch/x86/platform/intel/iosf_mbi.c +++ b/arch/x86/platform/intel/iosf_mbi.c @@ -62,7 +62,7 @@ static int iosf_mbi_pci_read_mdr(u32 mcrx, u32 mcr, u32 *mdr) fail_read: dev_err(&mbi_pdev->dev, "PCI config access failed with %d\n", result); - return result; + return pcibios_err_to_errno(result); } static int iosf_mbi_pci_write_mdr(u32 mcrx, u32 mcr, u32 mdr) @@ -91,7 +91,7 @@ static int iosf_mbi_pci_write_mdr(u32 mcrx, u32 mcr, u32 mdr) fail_write: dev_err(&mbi_pdev->dev, "PCI config access failed with %d\n", result); - return result; + return pcibios_err_to_errno(result); } int iosf_mbi_read(u8 port, u8 opcode, u32 offset, u32 *mdr) @@ -422,19 +422,6 @@ int iosf_mbi_unregister_pmic_bus_access_notifier_unlocked( } EXPORT_SYMBOL(iosf_mbi_unregister_pmic_bus_access_notifier_unlocked); -int iosf_mbi_unregister_pmic_bus_access_notifier(struct notifier_block *nb) -{ - int ret; - - /* Wait for the bus to go inactive before unregistering */ - iosf_mbi_punit_acquire(); - ret = iosf_mbi_unregister_pmic_bus_access_notifier_unlocked(nb); - iosf_mbi_punit_release(); - - return ret; -} -EXPORT_SYMBOL(iosf_mbi_unregister_pmic_bus_access_notifier); - void iosf_mbi_assert_punit_acquired(void) { WARN_ON(iosf_mbi_pmic_punit_access_count == 0); diff --git a/arch/x86/platform/iris/iris.c b/arch/x86/platform/iris/iris.c index b42bfdab01a9..5591a2d9cfe8 100644 --- a/arch/x86/platform/iris/iris.c +++ b/arch/x86/platform/iris/iris.c @@ -62,11 +62,10 @@ static int iris_probe(struct platform_device *pdev) return 0; } -static int iris_remove(struct platform_device *pdev) +static void iris_remove(struct platform_device *pdev) { pm_power_off = old_pm_power_off; printk(KERN_INFO "Iris power_off handler uninstalled.\n"); - return 0; } static struct platform_driver iris_driver = { diff --git a/arch/x86/platform/olpc/olpc-xo1-pm.c b/arch/x86/platform/olpc/olpc-xo1-pm.c index f067ac780ba7..424eeae12759 100644 --- a/arch/x86/platform/olpc/olpc-xo1-pm.c +++ b/arch/x86/platform/olpc/olpc-xo1-pm.c @@ -144,7 +144,7 @@ static int xo1_pm_probe(struct platform_device *pdev) return 0; } -static int xo1_pm_remove(struct platform_device *pdev) +static void xo1_pm_remove(struct platform_device *pdev) { if (strcmp(pdev->name, "cs5535-pms") == 0) pms_base = 0; @@ -152,7 +152,6 @@ static int xo1_pm_remove(struct platform_device *pdev) acpi_base = 0; pm_power_off = NULL; - return 0; } static struct platform_driver cs5535_pms_driver = { diff --git a/arch/x86/platform/olpc/olpc-xo1-rtc.c b/arch/x86/platform/olpc/olpc-xo1-rtc.c index 57f210cda761..ee77d57bcab7 100644 --- a/arch/x86/platform/olpc/olpc-xo1-rtc.c +++ b/arch/x86/platform/olpc/olpc-xo1-rtc.c @@ -64,9 +64,9 @@ static int __init xo1_rtc_init(void) of_node_put(node); pr_info("olpc-xo1-rtc: Initializing OLPC XO-1 RTC\n"); - rdmsrl(MSR_RTC_DOMA_OFFSET, rtc_info.rtc_day_alarm); - rdmsrl(MSR_RTC_MONA_OFFSET, rtc_info.rtc_mon_alarm); - rdmsrl(MSR_RTC_CEN_OFFSET, rtc_info.rtc_century); + rdmsrq(MSR_RTC_DOMA_OFFSET, rtc_info.rtc_day_alarm); + rdmsrq(MSR_RTC_MONA_OFFSET, rtc_info.rtc_mon_alarm); + rdmsrq(MSR_RTC_CEN_OFFSET, rtc_info.rtc_century); r = platform_device_register(&xo1_rtc_device); if (r) diff --git a/arch/x86/platform/olpc/olpc-xo1-sci.c b/arch/x86/platform/olpc/olpc-xo1-sci.c index 89f25af4b3c3..30751b42d54e 100644 --- a/arch/x86/platform/olpc/olpc-xo1-sci.c +++ b/arch/x86/platform/olpc/olpc-xo1-sci.c @@ -14,7 +14,6 @@ #include <linux/interrupt.h> #include <linux/platform_device.h> #include <linux/pm.h> -#include <linux/pm_wakeup.h> #include <linux/power_supply.h> #include <linux/suspend.h> #include <linux/workqueue.h> @@ -326,7 +325,7 @@ static int setup_sci_interrupt(struct platform_device *pdev) dev_info(&pdev->dev, "SCI unmapped. Mapping to IRQ 3\n"); sci_irq = 3; lo |= 0x00300000; - wrmsrl(0x51400020, lo); + wrmsrq(0x51400020, lo); } /* Select level triggered in PIC */ @@ -598,7 +597,7 @@ err_ebook: return r; } -static int xo1_sci_remove(struct platform_device *pdev) +static void xo1_sci_remove(struct platform_device *pdev) { free_irq(sci_irq, pdev); cancel_work_sync(&sci_work); @@ -608,7 +607,6 @@ static int xo1_sci_remove(struct platform_device *pdev) free_ebook_switch(); free_power_button(); acpi_base = 0; - return 0; } static struct platform_driver xo1_sci_driver = { diff --git a/arch/x86/platform/olpc/olpc_dt.c b/arch/x86/platform/olpc/olpc_dt.c index 74ebd6882690..e108ce7dad6a 100644 --- a/arch/x86/platform/olpc/olpc_dt.c +++ b/arch/x86/platform/olpc/olpc_dt.c @@ -136,11 +136,7 @@ void * __init prom_early_alloc(unsigned long size) * fast enough on the platforms we care about while minimizing * wasted bootmem) and hand off chunks of it to callers. */ - res = memblock_alloc(chunk_size, SMP_CACHE_BYTES); - if (!res) - panic("%s: Failed to allocate %zu bytes\n", __func__, - chunk_size); - BUG_ON(!res); + res = memblock_alloc_or_panic(chunk_size, SMP_CACHE_BYTES); prom_early_allocated += chunk_size; memset(res, 0, chunk_size); free_mem = chunk_size; @@ -219,13 +215,12 @@ static u32 __init olpc_dt_get_board_revision(void) static int __init olpc_dt_compatible_match(phandle node, const char *compat) { char buf[64], *p; - int plen, len; + int plen; plen = olpc_dt_getproperty(node, "compatible", buf, sizeof(buf)); if (plen <= 0) return 0; - len = strlen(compat); for (p = buf; p < buf + plen; p += strlen(p) + 1) { if (strcmp(p, compat) == 0) return 1; diff --git a/arch/x86/platform/pvh/Makefile b/arch/x86/platform/pvh/Makefile index 5dec5067c9fb..c43fb7964dc4 100644 --- a/arch/x86/platform/pvh/Makefile +++ b/arch/x86/platform/pvh/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 OBJECT_FILES_NON_STANDARD_head.o := y +KASAN_SANITIZE := n obj-$(CONFIG_PVH) += enlighten.o obj-$(CONFIG_PVH) += head.o diff --git a/arch/x86/platform/pvh/enlighten.c b/arch/x86/platform/pvh/enlighten.c index 00a92cb2c814..2263885d16ba 100644 --- a/arch/x86/platform/pvh/enlighten.c +++ b/arch/x86/platform/pvh/enlighten.c @@ -3,6 +3,7 @@ #include <xen/hvc-console.h> +#include <asm/bootparam.h> #include <asm/io_apic.h> #include <asm/hypervisor.h> #include <asm/e820/api.h> @@ -129,7 +130,11 @@ void __init xen_prepare_pvh(void) BUG(); } - memset(&pvh_bootparams, 0, sizeof(pvh_bootparams)); + /* + * This must not compile to "call memset" because memset() may be + * instrumented. + */ + __builtin_memset(&pvh_bootparams, 0, sizeof(pvh_bootparams)); hypervisor_specific_init(xen_guest); diff --git a/arch/x86/platform/pvh/head.S b/arch/x86/platform/pvh/head.S index c4365a05ab83..344030c1a81d 100644 --- a/arch/x86/platform/pvh/head.S +++ b/arch/x86/platform/pvh/head.S @@ -6,20 +6,25 @@ .code32 .text +#ifdef CONFIG_X86_32 #define _pa(x) ((x) - __START_KERNEL_map) +#endif +#define rva(x) ((x) - pvh_start_xen) #include <linux/elfnote.h> #include <linux/init.h> #include <linux/linkage.h> +#include <asm/desc_defs.h> #include <asm/segment.h> #include <asm/asm.h> #include <asm/boot.h> +#include <asm/pgtable.h> #include <asm/processor-flags.h> #include <asm/msr.h> #include <asm/nospec-branch.h> #include <xen/interface/elfnote.h> - __HEAD + __INIT /* * Entry point for PVH guests. @@ -41,7 +46,7 @@ * Bit 8 (TF) must be cleared. Other bits are all unspecified. * * All other processor registers and flag bits are unspecified. The OS is in - * charge of setting up it's own stack, GDT and IDT. + * charge of setting up its own stack, GDT and IDT. */ #define PVH_GDT_ENTRY_CS 1 @@ -49,11 +54,28 @@ #define PVH_CS_SEL (PVH_GDT_ENTRY_CS * 8) #define PVH_DS_SEL (PVH_GDT_ENTRY_DS * 8) -SYM_CODE_START_LOCAL(pvh_start_xen) +SYM_CODE_START(pvh_start_xen) UNWIND_HINT_END_OF_STACK cld - lgdt (_pa(gdt)) + /* + * See the comment for startup_32 for more details. We need to + * execute a call to get the execution address to be position + * independent, but we don't have a stack. Save and restore the + * magic field of start_info in ebx, and use that as the stack. + */ + mov (%ebx), %eax + leal 4(%ebx), %esp + ANNOTATE_INTRA_FUNCTION_CALL + call 1f +1: popl %ebp + mov %eax, (%ebx) + subl $rva(1b), %ebp + movl $0, %esp + + leal rva(gdt)(%ebp), %eax + addl %eax, 2(%eax) + lgdt (%eax) mov $PVH_DS_SEL,%eax mov %eax,%ds @@ -61,14 +83,13 @@ SYM_CODE_START_LOCAL(pvh_start_xen) mov %eax,%ss /* Stash hvm_start_info. */ - mov $_pa(pvh_start_info), %edi + leal rva(pvh_start_info)(%ebp), %edi mov %ebx, %esi - mov _pa(pvh_start_info_sz), %ecx + movl rva(pvh_start_info_sz)(%ebp), %ecx shr $2,%ecx - rep - movsl + rep movsl - mov $_pa(early_stack_end), %esp + leal rva(early_stack_end)(%ebp), %esp /* Enable PAE mode. */ mov %cr4, %eax @@ -82,31 +103,95 @@ SYM_CODE_START_LOCAL(pvh_start_xen) btsl $_EFER_LME, %eax wrmsr + /* + * Reuse the non-relocatable symbol emitted for the ELF note to + * subtract the build time physical address of pvh_start_xen() from + * its actual runtime address, without relying on absolute 32-bit ELF + * relocations, as these are not supported by the linker when running + * in -pie mode, and should be avoided in .head.text in general. + */ + mov %ebp, %ebx + subl rva(xen_elfnote_phys32_entry)(%ebp), %ebx + jz .Lpagetable_done + + /* + * Store the resulting load offset in phys_base. __pa() needs + * phys_base set to calculate the hypercall page in xen_pvh_init(). + */ + movl %ebx, rva(phys_base)(%ebp) + + /* Fixup page-tables for relocation. */ + leal rva(pvh_init_top_pgt)(%ebp), %edi + movl $PTRS_PER_PGD, %ecx +2: + testl $_PAGE_PRESENT, 0x00(%edi) + jz 1f + addl %ebx, 0x00(%edi) +1: + addl $8, %edi + decl %ecx + jnz 2b + + /* L3 ident has a single entry. */ + leal rva(pvh_level3_ident_pgt)(%ebp), %edi + addl %ebx, 0x00(%edi) + + leal rva(pvh_level3_kernel_pgt)(%ebp), %edi + addl %ebx, (PAGE_SIZE - 16)(%edi) + addl %ebx, (PAGE_SIZE - 8)(%edi) + + /* pvh_level2_ident_pgt is fine - large pages */ + + /* pvh_level2_kernel_pgt needs adjustment - large pages */ + leal rva(pvh_level2_kernel_pgt)(%ebp), %edi + movl $PTRS_PER_PMD, %ecx +2: + testl $_PAGE_PRESENT, 0x00(%edi) + jz 1f + addl %ebx, 0x00(%edi) +1: + addl $8, %edi + decl %ecx + jnz 2b + +.Lpagetable_done: /* Enable pre-constructed page tables. */ - mov $_pa(init_top_pgt), %eax + leal rva(pvh_init_top_pgt)(%ebp), %eax mov %eax, %cr3 mov $(X86_CR0_PG | X86_CR0_PE), %eax mov %eax, %cr0 /* Jump to 64-bit mode. */ - ljmp $PVH_CS_SEL, $_pa(1f) + pushl $PVH_CS_SEL + leal rva(1f)(%ebp), %eax + pushl %eax + lretl /* 64-bit entry point. */ .code64 1: - /* Set base address in stack canary descriptor. */ - mov $MSR_GS_BASE,%ecx - mov $_pa(canary), %eax - xor %edx, %edx + UNWIND_HINT_END_OF_STACK + + /* + * Set up GSBASE. + * Note that on SMP the boot CPU uses the init data section until + * the per-CPU areas are set up. + */ + movl $MSR_GS_BASE,%ecx + xorl %eax, %eax + xorl %edx, %edx wrmsr - call xen_prepare_pvh + /* Call xen_prepare_pvh() via the kernel virtual mapping */ + leaq xen_prepare_pvh(%rip), %rax + subq phys_base(%rip), %rax + addq $__START_KERNEL_map, %rax + ANNOTATE_RETPOLINE_SAFE + call *%rax /* startup_64 expects boot_params in %rsi. */ - mov $_pa(pvh_bootparams), %rsi - mov $_pa(startup_64), %rax - ANNOTATE_RETPOLINE_SAFE - jmp *%rax + lea pvh_bootparams(%rip), %rsi + jmp startup_64 #else /* CONFIG_X86_64 */ @@ -141,26 +226,86 @@ SYM_CODE_END(pvh_start_xen) .section ".init.data","aw" .balign 8 SYM_DATA_START_LOCAL(gdt) - .word gdt_end - gdt_start - .long _pa(gdt_start) + .word gdt_end - gdt_start - 1 + .long gdt_start - gdt .word 0 SYM_DATA_END(gdt) SYM_DATA_START_LOCAL(gdt_start) .quad 0x0000000000000000 /* NULL descriptor */ #ifdef CONFIG_X86_64 - .quad GDT_ENTRY(0xa09a, 0, 0xfffff) /* PVH_CS_SEL */ + .quad GDT_ENTRY(DESC_CODE64, 0, 0xfffff) /* PVH_CS_SEL */ #else - .quad GDT_ENTRY(0xc09a, 0, 0xfffff) /* PVH_CS_SEL */ + .quad GDT_ENTRY(DESC_CODE32, 0, 0xfffff) /* PVH_CS_SEL */ #endif - .quad GDT_ENTRY(0xc092, 0, 0xfffff) /* PVH_DS_SEL */ + .quad GDT_ENTRY(DESC_DATA32, 0, 0xfffff) /* PVH_DS_SEL */ SYM_DATA_END_LABEL(gdt_start, SYM_L_LOCAL, gdt_end) .balign 16 -SYM_DATA_LOCAL(canary, .fill 48, 1, 0) - SYM_DATA_START_LOCAL(early_stack) .fill BOOT_STACK_SIZE, 1, 0 SYM_DATA_END_LABEL(early_stack, SYM_L_LOCAL, early_stack_end) - ELFNOTE(Xen, XEN_ELFNOTE_PHYS32_ENTRY, - _ASM_PTR (pvh_start_xen - __START_KERNEL_map)) +#ifdef CONFIG_X86_64 +/* + * Xen PVH needs a set of identity mapped and kernel high mapping + * page tables. pvh_start_xen starts running on the identity mapped + * page tables, but xen_prepare_pvh calls into the high mapping. + * These page tables need to be relocatable and are only used until + * startup_64 transitions to init_top_pgt. + */ +SYM_DATA_START_PAGE_ALIGNED(pvh_init_top_pgt) + .quad pvh_level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE_NOENC + .org pvh_init_top_pgt + L4_PAGE_OFFSET * 8, 0 + .quad pvh_level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE_NOENC + .org pvh_init_top_pgt + L4_START_KERNEL * 8, 0 + /* (2^48-(2*1024*1024*1024))/(2^39) = 511 */ + .quad pvh_level3_kernel_pgt - __START_KERNEL_map + _PAGE_TABLE_NOENC +SYM_DATA_END(pvh_init_top_pgt) + +SYM_DATA_START_PAGE_ALIGNED(pvh_level3_ident_pgt) + .quad pvh_level2_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE_NOENC + .fill 511, 8, 0 +SYM_DATA_END(pvh_level3_ident_pgt) +SYM_DATA_START_PAGE_ALIGNED(pvh_level2_ident_pgt) + /* + * Since I easily can, map the first 1G. + * Don't set NX because code runs from these pages. + * + * Note: This sets _PAGE_GLOBAL despite whether + * the CPU supports it or it is enabled. But, + * the CPU should ignore the bit. + */ + PMDS(0, __PAGE_KERNEL_IDENT_LARGE_EXEC, PTRS_PER_PMD) +SYM_DATA_END(pvh_level2_ident_pgt) +SYM_DATA_START_PAGE_ALIGNED(pvh_level3_kernel_pgt) + .fill L3_START_KERNEL, 8, 0 + /* (2^48-(2*1024*1024*1024)-((2^39)*511))/(2^30) = 510 */ + .quad pvh_level2_kernel_pgt - __START_KERNEL_map + _KERNPG_TABLE_NOENC + .quad 0 /* no fixmap */ +SYM_DATA_END(pvh_level3_kernel_pgt) + +SYM_DATA_START_PAGE_ALIGNED(pvh_level2_kernel_pgt) + /* + * Kernel high mapping. + * + * The kernel code+data+bss must be located below KERNEL_IMAGE_SIZE in + * virtual address space, which is 1 GiB if RANDOMIZE_BASE is enabled, + * 512 MiB otherwise. + * + * (NOTE: after that starts the module area, see MODULES_VADDR.) + * + * This table is eventually used by the kernel during normal runtime. + * Care must be taken to clear out undesired bits later, like _PAGE_RW + * or _PAGE_GLOBAL in some cases. + */ + PMDS(0, __PAGE_KERNEL_LARGE_EXEC, KERNEL_IMAGE_SIZE / PMD_SIZE) +SYM_DATA_END(pvh_level2_kernel_pgt) + + ELFNOTE(Xen, XEN_ELFNOTE_PHYS32_RELOC, + .long CONFIG_PHYSICAL_ALIGN; + .long LOAD_PHYSICAL_ADDR; + .long KERNEL_IMAGE_SIZE - 1) +#endif + + ELFNOTE(Xen, XEN_ELFNOTE_PHYS32_ENTRY, .global xen_elfnote_phys32_entry; + xen_elfnote_phys32_entry: _ASM_PTR xen_elfnote_phys32_entry_value - .) diff --git a/arch/x86/platform/uv/uv_irq.c b/arch/x86/platform/uv/uv_irq.c index 4221259a5870..4f200ac96ce0 100644 --- a/arch/x86/platform/uv/uv_irq.c +++ b/arch/x86/platform/uv/uv_irq.c @@ -35,7 +35,7 @@ static void uv_program_mmr(struct irq_cfg *cfg, struct uv_irq_2_mmr_pnode *info) mmr_value = 0; entry = (struct uv_IO_APIC_route_entry *)&mmr_value; entry->vector = cfg->vector; - entry->delivery_mode = apic->delivery_mode; + entry->delivery_mode = APIC_DELIVERY_MODE_FIXED; entry->dest_mode = apic->dest_mode_logical; entry->polarity = 0; entry->trigger = 0; @@ -92,8 +92,6 @@ static int uv_domain_alloc(struct irq_domain *domain, unsigned int virq, if (ret >= 0) { if (info->uv.limit == UV_AFFINITY_CPU) irq_set_status_flags(virq, IRQ_NO_BALANCING); - else - irq_set_status_flags(virq, IRQ_MOVE_PCNTXT); chip_data->pnode = uv_blade_to_pnode(info->uv.blade); chip_data->offset = info->uv.offset; @@ -113,7 +111,6 @@ static void uv_domain_free(struct irq_domain *domain, unsigned int virq, BUG_ON(nr_irqs != 1); kfree(irq_data->chip_data); - irq_clear_status_flags(virq, IRQ_MOVE_PCNTXT); irq_clear_status_flags(virq, IRQ_NO_BALANCING); irq_domain_free_irqs_top(domain, virq, nr_irqs); } diff --git a/arch/x86/platform/uv/uv_nmi.c b/arch/x86/platform/uv/uv_nmi.c index 45d0c17ce77c..5c50e550ab63 100644 --- a/arch/x86/platform/uv/uv_nmi.c +++ b/arch/x86/platform/uv/uv_nmi.c @@ -17,6 +17,7 @@ #include <linux/sched.h> #include <linux/sched/debug.h> #include <linux/slab.h> +#include <linux/string.h> #include <linux/clocksource.h> #include <asm/apic.h> @@ -178,49 +179,56 @@ module_param_named(debug, uv_nmi_debug, int, 0644); } while (0) /* Valid NMI Actions */ -#define ACTION_LEN 16 -static struct nmi_action { - char *action; - char *desc; -} valid_acts[] = { - { "kdump", "do kernel crash dump" }, - { "dump", "dump process stack for each cpu" }, - { "ips", "dump Inst Ptr info for each cpu" }, - { "kdb", "enter KDB (needs kgdboc= assignment)" }, - { "kgdb", "enter KGDB (needs gdb target remote)" }, - { "health", "check if CPUs respond to NMI" }, +enum action_t { + nmi_act_kdump, + nmi_act_dump, + nmi_act_ips, + nmi_act_kdb, + nmi_act_kgdb, + nmi_act_health, + nmi_act_max }; -typedef char action_t[ACTION_LEN]; -static action_t uv_nmi_action = { "dump" }; + +static const char * const actions[nmi_act_max] = { + [nmi_act_kdump] = "kdump", + [nmi_act_dump] = "dump", + [nmi_act_ips] = "ips", + [nmi_act_kdb] = "kdb", + [nmi_act_kgdb] = "kgdb", + [nmi_act_health] = "health", +}; + +static const char * const actions_desc[nmi_act_max] = { + [nmi_act_kdump] = "do kernel crash dump", + [nmi_act_dump] = "dump process stack for each cpu", + [nmi_act_ips] = "dump Inst Ptr info for each cpu", + [nmi_act_kdb] = "enter KDB (needs kgdboc= assignment)", + [nmi_act_kgdb] = "enter KGDB (needs gdb target remote)", + [nmi_act_health] = "check if CPUs respond to NMI", +}; + +static enum action_t uv_nmi_action = nmi_act_dump; static int param_get_action(char *buffer, const struct kernel_param *kp) { - return sprintf(buffer, "%s\n", uv_nmi_action); + return sprintf(buffer, "%s\n", actions[uv_nmi_action]); } static int param_set_action(const char *val, const struct kernel_param *kp) { - int i; - int n = ARRAY_SIZE(valid_acts); - char arg[ACTION_LEN]; - - /* (remove possible '\n') */ - strscpy(arg, val, strnchrnul(val, sizeof(arg)-1, '\n') - val + 1); - - for (i = 0; i < n; i++) - if (!strcmp(arg, valid_acts[i].action)) - break; + int i, n = ARRAY_SIZE(actions); - if (i < n) { - strscpy(uv_nmi_action, arg, sizeof(uv_nmi_action)); - pr_info("UV: New NMI action:%s\n", uv_nmi_action); + i = sysfs_match_string(actions, val); + if (i >= 0) { + uv_nmi_action = i; + pr_info("UV: New NMI action:%s\n", actions[i]); return 0; } - pr_err("UV: Invalid NMI action:%s, valid actions are:\n", arg); + pr_err("UV: Invalid NMI action. Valid actions are:\n"); for (i = 0; i < n; i++) - pr_err("UV: %-8s - %s\n", - valid_acts[i].action, valid_acts[i].desc); + pr_err("UV: %-8s - %s\n", actions[i], actions_desc[i]); + return -EINVAL; } @@ -228,15 +236,10 @@ static const struct kernel_param_ops param_ops_action = { .get = param_get_action, .set = param_set_action, }; -#define param_check_action(name, p) __param_check(name, p, action_t) +#define param_check_action(name, p) __param_check(name, p, enum action_t) module_param_named(action, uv_nmi_action, action, 0644); -static inline bool uv_nmi_action_is(const char *action) -{ - return (strncmp(uv_nmi_action, action, strlen(action)) == 0); -} - /* Setup which NMI support is present in system */ static void uv_nmi_setup_mmrs(void) { @@ -727,10 +730,10 @@ static void uv_nmi_dump_state_cpu(int cpu, struct pt_regs *regs) if (cpu == 0) uv_nmi_dump_cpu_ip_hdr(); - if (current->pid != 0 || !uv_nmi_action_is("ips")) + if (current->pid != 0 || uv_nmi_action != nmi_act_ips) uv_nmi_dump_cpu_ip(cpu, regs); - if (uv_nmi_action_is("dump")) { + if (uv_nmi_action == nmi_act_dump) { pr_info("UV:%sNMI process trace for CPU %d\n", dots, cpu); show_regs(regs); } @@ -738,7 +741,7 @@ static void uv_nmi_dump_state_cpu(int cpu, struct pt_regs *regs) this_cpu_write(uv_cpu_nmi.state, UV_NMI_STATE_DUMP_DONE); } -/* Trigger a slave CPU to dump it's state */ +/* Trigger a slave CPU to dump its state */ static void uv_nmi_trigger_dump(int cpu) { int retry = uv_nmi_trigger_delay; @@ -798,7 +801,7 @@ static void uv_nmi_dump_state(int cpu, struct pt_regs *regs, int master) int saved_console_loglevel = console_loglevel; pr_alert("UV: tracing %s for %d CPUs from CPU %d\n", - uv_nmi_action_is("ips") ? "IPs" : "processes", + uv_nmi_action == nmi_act_ips ? "IPs" : "processes", atomic_read(&uv_nmi_cpus_in_nmi), cpu); console_loglevel = uv_nmi_loglevel; @@ -874,7 +877,7 @@ static inline int uv_nmi_kdb_reason(void) static inline int uv_nmi_kdb_reason(void) { /* Ensure user is expecting to attach gdb remote */ - if (uv_nmi_action_is("kgdb")) + if (uv_nmi_action == nmi_act_kgdb) return 0; pr_err("UV: NMI error: KDB is not enabled in this kernel\n"); @@ -950,28 +953,35 @@ static int uv_handle_nmi(unsigned int reason, struct pt_regs *regs) master = (atomic_read(&uv_nmi_cpu) == cpu); /* If NMI action is "kdump", then attempt to do it */ - if (uv_nmi_action_is("kdump")) { + if (uv_nmi_action == nmi_act_kdump) { uv_nmi_kdump(cpu, master, regs); /* Unexpected return, revert action to "dump" */ if (master) - strscpy(uv_nmi_action, "dump", sizeof(uv_nmi_action)); + uv_nmi_action = nmi_act_dump; } /* Pause as all CPU's enter the NMI handler */ uv_nmi_wait(master); /* Process actions other than "kdump": */ - if (uv_nmi_action_is("health")) { + switch (uv_nmi_action) { + case nmi_act_health: uv_nmi_action_health(cpu, regs, master); - } else if (uv_nmi_action_is("ips") || uv_nmi_action_is("dump")) { + break; + case nmi_act_ips: + case nmi_act_dump: uv_nmi_dump_state(cpu, regs, master); - } else if (uv_nmi_action_is("kdb") || uv_nmi_action_is("kgdb")) { + break; + case nmi_act_kdb: + case nmi_act_kgdb: uv_call_kgdb_kdb(cpu, regs, master); - } else { + break; + default: if (master) - pr_alert("UV: unknown NMI action: %s\n", uv_nmi_action); + pr_alert("UV: unknown NMI action: %d\n", uv_nmi_action); uv_nmi_sync_exit(master); + break; } /* Clear per_cpu "in_nmi" flag */ diff --git a/arch/x86/platform/uv/uv_time.c b/arch/x86/platform/uv/uv_time.c index 54663f3e00cb..3712afc3534d 100644 --- a/arch/x86/platform/uv/uv_time.c +++ b/arch/x86/platform/uv/uv_time.c @@ -53,7 +53,7 @@ struct uv_rtc_timer_head { struct { int lcpu; /* systemwide logical cpu number */ u64 expires; /* next timer expiration for this cpu */ - } cpu[]; + } cpu[] __counted_by(ncpus); }; /* @@ -270,7 +270,7 @@ static int uv_rtc_unset_timer(int cpu, int force) * Read the RTC. * * Starting with HUB rev 2.0, the UV RTC register is replicated across all - * cachelines of it's own page. This allows faster simultaneous reads + * cachelines of its own page. This allows faster simultaneous reads * from a given socket. */ static u64 uv_read_rtc(struct clocksource *cs) |