diff options
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/alternative.c | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/crash.c | 26 | ||||
| -rw-r--r-- | arch/x86/kernel/ftrace.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/kprobes/core.c | 18 | ||||
| -rw-r--r-- | arch/x86/kernel/setup.c | 5 |
5 files changed, 27 insertions, 27 deletions
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c index 9f6b7dab2d9a..7bde68247b5f 100644 --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c @@ -120,7 +120,7 @@ struct its_array its_pages; static void *__its_alloc(struct its_array *pages) { - void *page __free(execmem) = execmem_alloc(EXECMEM_MODULE_TEXT, PAGE_SIZE); + void *page __free(execmem) = execmem_alloc_rw(EXECMEM_MODULE_TEXT, PAGE_SIZE); if (!page) return NULL; @@ -237,7 +237,6 @@ static void *its_alloc(void) if (!page) return NULL; - execmem_make_temp_rw(page, PAGE_SIZE); if (pages == &its_pages) set_memory_x((unsigned long)page, 1); diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c index bcb534688dfe..c6b12bed173d 100644 --- a/arch/x86/kernel/crash.c +++ b/arch/x86/kernel/crash.c @@ -163,10 +163,10 @@ static struct crash_mem *fill_up_crash_elf_data(void) return NULL; /* - * Exclusion of crash region and/or crashk_low_res may cause - * another range split. So add extra two slots here. + * Exclusion of crash region, crashk_low_res and/or crashk_cma_ranges + * may cause range splits. So add extra slots here. */ - nr_ranges += 2; + nr_ranges += 2 + crashk_cma_cnt; cmem = vzalloc(struct_size(cmem, ranges, nr_ranges)); if (!cmem) return NULL; @@ -184,6 +184,7 @@ static struct crash_mem *fill_up_crash_elf_data(void) static int elf_header_exclude_ranges(struct crash_mem *cmem) { int ret = 0; + int i; /* Exclude the low 1M because it is always reserved */ ret = crash_exclude_mem_range(cmem, 0, SZ_1M - 1); @@ -198,8 +199,17 @@ static int elf_header_exclude_ranges(struct crash_mem *cmem) if (crashk_low_res.end) ret = crash_exclude_mem_range(cmem, crashk_low_res.start, crashk_low_res.end); + if (ret) + return ret; - return ret; + for (i = 0; i < crashk_cma_cnt; ++i) { + ret = crash_exclude_mem_range(cmem, crashk_cma_ranges[i].start, + crashk_cma_ranges[i].end); + if (ret) + return ret; + } + + return 0; } static int prepare_elf64_ram_headers_callback(struct resource *res, void *arg) @@ -374,6 +384,14 @@ int crash_setup_memmap_entries(struct kimage *image, struct boot_params *params) add_e820_entry(params, &ei); } + for (i = 0; i < crashk_cma_cnt; ++i) { + ei.addr = crashk_cma_ranges[i].start; + ei.size = crashk_cma_ranges[i].end - + crashk_cma_ranges[i].start + 1; + ei.type = E820_TYPE_RAM; + add_e820_entry(params, &ei); + } + out: vfree(cmem); return ret; diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index 252e82bcfd2f..4450acec9390 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -263,7 +263,7 @@ void arch_ftrace_update_code(int command) static inline void *alloc_tramp(unsigned long size) { - return execmem_alloc(EXECMEM_FTRACE, size); + return execmem_alloc_rw(EXECMEM_FTRACE, size); } static inline void tramp_free(void *tramp) { diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c index 47cb8eb138ba..6079d15dab8c 100644 --- a/arch/x86/kernel/kprobes/core.c +++ b/arch/x86/kernel/kprobes/core.c @@ -481,24 +481,6 @@ static int prepare_singlestep(kprobe_opcode_t *buf, struct kprobe *p, return len; } -/* Make page to RO mode when allocate it */ -void *alloc_insn_page(void) -{ - void *page; - - page = execmem_alloc(EXECMEM_KPROBES, PAGE_SIZE); - if (!page) - return NULL; - - /* - * TODO: Once additional kernel code protection mechanisms are set, ensure - * that the page was not maliciously altered and it is still zeroed. - */ - set_memory_rox((unsigned long)page, 1); - - return page; -} - /* Kprobe x86 instruction emulation - only regs->ip or IF flag modifiers */ static void kprobe_emulate_ifmodifiers(struct kprobe *p, struct pt_regs *regs) diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 0792f31961ac..1b2edd07a3e1 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -603,7 +603,7 @@ static void __init memblock_x86_reserve_range_setup_data(void) static void __init arch_reserve_crashkernel(void) { - unsigned long long crash_base, crash_size, low_size = 0; + unsigned long long crash_base, crash_size, low_size = 0, cma_size = 0; bool high = false; int ret; @@ -612,7 +612,7 @@ static void __init arch_reserve_crashkernel(void) ret = parse_crashkernel(boot_command_line, memblock_phys_mem_size(), &crash_size, &crash_base, - &low_size, &high); + &low_size, &cma_size, &high); if (ret) return; @@ -622,6 +622,7 @@ static void __init arch_reserve_crashkernel(void) } reserve_crashkernel_generic(crash_size, crash_base, low_size, high); + reserve_crashkernel_cma(cma_size); } static struct resource standard_io_resources[] = { |