diff options
| -rw-r--r-- | arch/x86/kernel/setup.c | 9 | ||||
| -rw-r--r-- | fs/proc/task_mmu.c | 14 |
2 files changed, 23 insertions, 0 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index d3d80e6d42a2..7260f992cd11 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -112,6 +112,7 @@ #include <asm/alternative.h> #include <asm/prom.h> #include <asm/microcode.h> +#include <asm/mmu_context.h> /* * max_low_pfn_mapped: highest direct mapped pfn under 4GB @@ -1282,3 +1283,11 @@ static int __init register_kernel_offset_dumper(void) return 0; } __initcall(register_kernel_offset_dumper); + +void arch_show_smap(struct seq_file *m, struct vm_area_struct *vma) +{ + if (!boot_cpu_has(X86_FEATURE_OSPKE)) + return; + + seq_printf(m, "ProtectionKey: %8u\n", vma_pkey(vma)); +} diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index fa95ab2d3674..9df431642042 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -660,11 +660,20 @@ static void show_smap_vma_flags(struct seq_file *m, struct vm_area_struct *vma) [ilog2(VM_MERGEABLE)] = "mg", [ilog2(VM_UFFD_MISSING)]= "um", [ilog2(VM_UFFD_WP)] = "uw", +#ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS + /* These come out via ProtectionKey: */ + [ilog2(VM_PKEY_BIT0)] = "", + [ilog2(VM_PKEY_BIT1)] = "", + [ilog2(VM_PKEY_BIT2)] = "", + [ilog2(VM_PKEY_BIT3)] = "", +#endif }; size_t i; seq_puts(m, "VmFlags: "); for (i = 0; i < BITS_PER_LONG; i++) { + if (!mnemonics[i][0]) + continue; if (vma->vm_flags & (1UL << i)) { seq_printf(m, "%c%c ", mnemonics[i][0], mnemonics[i][1]); @@ -702,6 +711,10 @@ static int smaps_hugetlb_range(pte_t *pte, unsigned long hmask, } #endif /* HUGETLB_PAGE */ +void __weak arch_show_smap(struct seq_file *m, struct vm_area_struct *vma) +{ +} + static int show_smap(struct seq_file *m, void *v, int is_pid) { struct vm_area_struct *vma = v; @@ -783,6 +796,7 @@ static int show_smap(struct seq_file *m, void *v, int is_pid) (vma->vm_flags & VM_LOCKED) ? (unsigned long)(mss.pss >> (10 + PSS_SHIFT)) : 0); + arch_show_smap(m, vma); show_smap_vma_flags(m, vma); m_cache_vma(m, vma); return 0; |