From: Dave Hansen <dave@sr71.net> To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, x86@kernel.org, Dave Hansen <dave@sr71.net>, dave.hansen@linux.intel.com Subject: [PATCH 10/34] x86, pkeys: arch-specific protection bits Date: Thu, 03 Dec 2015 17:14:38 -0800 [thread overview] Message-ID: <20151204011438.E50D1498@viggo.jf.intel.com> (raw) In-Reply-To: <20151204011424.8A36E365@viggo.jf.intel.com> From: Dave Hansen <dave.hansen@linux.intel.com> Lots of things seem to do: vma->vm_page_prot = vm_get_page_prot(flags); and the ptes get created right from things we pull out of ->vm_page_prot. So it is very convenient if we can store the protection key in flags and vm_page_prot, just like the existing permission bits (_PAGE_RW/PRESENT). It greatly reduces the amount of plumbing and arch-specific hacking we have to do in generic code. This also takes the new PROT_PKEY{0,1,2,3} flags and turns *those* in to VM_ flags for vma->vm_flags. The protection key values are stored in 4 places: 1. "prot" argument to system calls 2. vma->vm_flags, filled from the mmap "prot" 3. vma->vm_page prot, filled from vma->vm_flags 4. the PTE itself. The pseudocode for these for steps are as follows: mmap(PROT_PKEY*) vma->vm_flags = ... | arch_calc_vm_prot_bits(mmap_prot); vma->vm_page_prot = ... | arch_vm_get_page_prot(vma->vm_flags); pte = pfn | vma->vm_page_prot Note that this provides a new definitions for x86: arch_vm_get_page_prot() Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> --- b/arch/x86/include/asm/mmu_context.h | 20 ++++++++++++++++++++ b/arch/x86/include/asm/pgtable_types.h | 12 ++++++++++-- b/arch/x86/include/uapi/asm/mman.h | 16 ++++++++++++++++ b/include/linux/mm.h | 6 ++++++ 4 files changed, 52 insertions(+), 2 deletions(-) diff -puN arch/x86/include/asm/mmu_context.h~pkeys-08-store-pkey-in-vma arch/x86/include/asm/mmu_context.h --- a/arch/x86/include/asm/mmu_context.h~pkeys-08-store-pkey-in-vma 2015-12-03 16:21:22.505529763 -0800 +++ b/arch/x86/include/asm/mmu_context.h 2015-12-03 16:21:22.514530171 -0800 @@ -243,4 +243,24 @@ static inline void arch_unmap(struct mm_ mpx_notify_unmap(mm, vma, start, end); } +static inline int vma_pkey(struct vm_area_struct *vma) +{ + u16 pkey = 0; +#ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS + unsigned long vma_pkey_mask = VM_PKEY_BIT0 | VM_PKEY_BIT1 | + VM_PKEY_BIT2 | VM_PKEY_BIT3; + /* + * ffs is one-based, not zero-based, so bias back down by 1. + */ + int vm_pkey_shift = __builtin_ffsl(vma_pkey_mask) - 1; + /* + * gcc generates better code if we do this rather than: + * pkey = (flags & mask) >> shift + */ + pkey = (vma->vm_flags >> vm_pkey_shift) & + (vma_pkey_mask >> vm_pkey_shift); +#endif + return pkey; +} + #endif /* _ASM_X86_MMU_CONTEXT_H */ diff -puN arch/x86/include/asm/pgtable_types.h~pkeys-08-store-pkey-in-vma arch/x86/include/asm/pgtable_types.h --- a/arch/x86/include/asm/pgtable_types.h~pkeys-08-store-pkey-in-vma 2015-12-03 16:21:22.507529853 -0800 +++ b/arch/x86/include/asm/pgtable_types.h 2015-12-03 16:21:22.514530171 -0800 @@ -111,7 +111,12 @@ #define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | \ _PAGE_DIRTY) -/* Set of bits not changed in pte_modify */ +/* + * Set of bits not changed in pte_modify. The pte's + * protection key is treated like _PAGE_RW, for + * instance, and is *not* included in this mask since + * pte_modify() does modify it. + */ #define _PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT | \ _PAGE_SPECIAL | _PAGE_ACCESSED | _PAGE_DIRTY | \ _PAGE_SOFT_DIRTY) @@ -227,7 +232,10 @@ enum page_cache_mode { /* Extracts the PFN from a (pte|pmd|pud|pgd)val_t of a 4KB page */ #define PTE_PFN_MASK ((pteval_t)PHYSICAL_PAGE_MASK) -/* Extracts the flags from a (pte|pmd|pud|pgd)val_t of a 4KB page */ +/* + * Extracts the flags from a (pte|pmd|pud|pgd)val_t + * This includes the protection key value. + */ #define PTE_FLAGS_MASK (~PTE_PFN_MASK) typedef struct pgprot { pgprotval_t pgprot; } pgprot_t; diff -puN arch/x86/include/uapi/asm/mman.h~pkeys-08-store-pkey-in-vma arch/x86/include/uapi/asm/mman.h --- a/arch/x86/include/uapi/asm/mman.h~pkeys-08-store-pkey-in-vma 2015-12-03 16:21:22.509529944 -0800 +++ b/arch/x86/include/uapi/asm/mman.h 2015-12-03 16:21:22.514530171 -0800 @@ -6,6 +6,22 @@ #define MAP_HUGE_2MB (21 << MAP_HUGE_SHIFT) #define MAP_HUGE_1GB (30 << MAP_HUGE_SHIFT) +#ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS +/* + * Take the 4 protection key bits out of the vma->vm_flags + * value and turn them in to the bits that we can put in + * to a pte. + * + * Only override these if Protection Keys are available + * (which is only on 64-bit). + */ +#define arch_vm_get_page_prot(vm_flags) __pgprot( \ + ((vm_flags) & VM_PKEY_BIT0 ? _PAGE_PKEY_BIT0 : 0) | \ + ((vm_flags) & VM_PKEY_BIT1 ? _PAGE_PKEY_BIT1 : 0) | \ + ((vm_flags) & VM_PKEY_BIT2 ? _PAGE_PKEY_BIT2 : 0) | \ + ((vm_flags) & VM_PKEY_BIT3 ? _PAGE_PKEY_BIT3 : 0)) +#endif + #include <asm-generic/mman.h> #endif /* _ASM_X86_MMAN_H */ diff -puN include/linux/mm.h~pkeys-08-store-pkey-in-vma include/linux/mm.h --- a/include/linux/mm.h~pkeys-08-store-pkey-in-vma 2015-12-03 16:21:22.510529990 -0800 +++ b/include/linux/mm.h 2015-12-03 16:21:22.515530216 -0800 @@ -167,6 +167,12 @@ extern unsigned int kobjsize(const void #if defined(CONFIG_X86) # define VM_PAT VM_ARCH_1 /* PAT reserves whole VMA at once (x86) */ +#if defined (CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS) +# define VM_PKEY_BIT0 VM_HIGH_ARCH_0 /* A protection key is a 4-bit value */ +# define VM_PKEY_BIT1 VM_HIGH_ARCH_1 +# define VM_PKEY_BIT2 VM_HIGH_ARCH_2 +# define VM_PKEY_BIT3 VM_HIGH_ARCH_3 +#endif #elif defined(CONFIG_PPC) # define VM_SAO VM_ARCH_1 /* Strong Access Ordering (powerpc) */ #elif defined(CONFIG_PARISC) _
WARNING: multiple messages have this Message-ID (diff)
From: Dave Hansen <dave@sr71.net> To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, x86@kernel.org, Dave Hansen <dave@sr71.net>, dave.hansen@linux.intel.com Subject: [PATCH 10/34] x86, pkeys: arch-specific protection bits Date: Thu, 03 Dec 2015 17:14:38 -0800 [thread overview] Message-ID: <20151204011438.E50D1498@viggo.jf.intel.com> (raw) In-Reply-To: <20151204011424.8A36E365@viggo.jf.intel.com> From: Dave Hansen <dave.hansen@linux.intel.com> Lots of things seem to do: vma->vm_page_prot = vm_get_page_prot(flags); and the ptes get created right from things we pull out of ->vm_page_prot. So it is very convenient if we can store the protection key in flags and vm_page_prot, just like the existing permission bits (_PAGE_RW/PRESENT). It greatly reduces the amount of plumbing and arch-specific hacking we have to do in generic code. This also takes the new PROT_PKEY{0,1,2,3} flags and turns *those* in to VM_ flags for vma->vm_flags. The protection key values are stored in 4 places: 1. "prot" argument to system calls 2. vma->vm_flags, filled from the mmap "prot" 3. vma->vm_page prot, filled from vma->vm_flags 4. the PTE itself. The pseudocode for these for steps are as follows: mmap(PROT_PKEY*) vma->vm_flags = ... | arch_calc_vm_prot_bits(mmap_prot); vma->vm_page_prot = ... | arch_vm_get_page_prot(vma->vm_flags); pte = pfn | vma->vm_page_prot Note that this provides a new definitions for x86: arch_vm_get_page_prot() Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> --- b/arch/x86/include/asm/mmu_context.h | 20 ++++++++++++++++++++ b/arch/x86/include/asm/pgtable_types.h | 12 ++++++++++-- b/arch/x86/include/uapi/asm/mman.h | 16 ++++++++++++++++ b/include/linux/mm.h | 6 ++++++ 4 files changed, 52 insertions(+), 2 deletions(-) diff -puN arch/x86/include/asm/mmu_context.h~pkeys-08-store-pkey-in-vma arch/x86/include/asm/mmu_context.h --- a/arch/x86/include/asm/mmu_context.h~pkeys-08-store-pkey-in-vma 2015-12-03 16:21:22.505529763 -0800 +++ b/arch/x86/include/asm/mmu_context.h 2015-12-03 16:21:22.514530171 -0800 @@ -243,4 +243,24 @@ static inline void arch_unmap(struct mm_ mpx_notify_unmap(mm, vma, start, end); } +static inline int vma_pkey(struct vm_area_struct *vma) +{ + u16 pkey = 0; +#ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS + unsigned long vma_pkey_mask = VM_PKEY_BIT0 | VM_PKEY_BIT1 | + VM_PKEY_BIT2 | VM_PKEY_BIT3; + /* + * ffs is one-based, not zero-based, so bias back down by 1. + */ + int vm_pkey_shift = __builtin_ffsl(vma_pkey_mask) - 1; + /* + * gcc generates better code if we do this rather than: + * pkey = (flags & mask) >> shift + */ + pkey = (vma->vm_flags >> vm_pkey_shift) & + (vma_pkey_mask >> vm_pkey_shift); +#endif + return pkey; +} + #endif /* _ASM_X86_MMU_CONTEXT_H */ diff -puN arch/x86/include/asm/pgtable_types.h~pkeys-08-store-pkey-in-vma arch/x86/include/asm/pgtable_types.h --- a/arch/x86/include/asm/pgtable_types.h~pkeys-08-store-pkey-in-vma 2015-12-03 16:21:22.507529853 -0800 +++ b/arch/x86/include/asm/pgtable_types.h 2015-12-03 16:21:22.514530171 -0800 @@ -111,7 +111,12 @@ #define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | \ _PAGE_DIRTY) -/* Set of bits not changed in pte_modify */ +/* + * Set of bits not changed in pte_modify. The pte's + * protection key is treated like _PAGE_RW, for + * instance, and is *not* included in this mask since + * pte_modify() does modify it. + */ #define _PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT | \ _PAGE_SPECIAL | _PAGE_ACCESSED | _PAGE_DIRTY | \ _PAGE_SOFT_DIRTY) @@ -227,7 +232,10 @@ enum page_cache_mode { /* Extracts the PFN from a (pte|pmd|pud|pgd)val_t of a 4KB page */ #define PTE_PFN_MASK ((pteval_t)PHYSICAL_PAGE_MASK) -/* Extracts the flags from a (pte|pmd|pud|pgd)val_t of a 4KB page */ +/* + * Extracts the flags from a (pte|pmd|pud|pgd)val_t + * This includes the protection key value. + */ #define PTE_FLAGS_MASK (~PTE_PFN_MASK) typedef struct pgprot { pgprotval_t pgprot; } pgprot_t; diff -puN arch/x86/include/uapi/asm/mman.h~pkeys-08-store-pkey-in-vma arch/x86/include/uapi/asm/mman.h --- a/arch/x86/include/uapi/asm/mman.h~pkeys-08-store-pkey-in-vma 2015-12-03 16:21:22.509529944 -0800 +++ b/arch/x86/include/uapi/asm/mman.h 2015-12-03 16:21:22.514530171 -0800 @@ -6,6 +6,22 @@ #define MAP_HUGE_2MB (21 << MAP_HUGE_SHIFT) #define MAP_HUGE_1GB (30 << MAP_HUGE_SHIFT) +#ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS +/* + * Take the 4 protection key bits out of the vma->vm_flags + * value and turn them in to the bits that we can put in + * to a pte. + * + * Only override these if Protection Keys are available + * (which is only on 64-bit). + */ +#define arch_vm_get_page_prot(vm_flags) __pgprot( \ + ((vm_flags) & VM_PKEY_BIT0 ? _PAGE_PKEY_BIT0 : 0) | \ + ((vm_flags) & VM_PKEY_BIT1 ? _PAGE_PKEY_BIT1 : 0) | \ + ((vm_flags) & VM_PKEY_BIT2 ? _PAGE_PKEY_BIT2 : 0) | \ + ((vm_flags) & VM_PKEY_BIT3 ? _PAGE_PKEY_BIT3 : 0)) +#endif + #include <asm-generic/mman.h> #endif /* _ASM_X86_MMAN_H */ diff -puN include/linux/mm.h~pkeys-08-store-pkey-in-vma include/linux/mm.h --- a/include/linux/mm.h~pkeys-08-store-pkey-in-vma 2015-12-03 16:21:22.510529990 -0800 +++ b/include/linux/mm.h 2015-12-03 16:21:22.515530216 -0800 @@ -167,6 +167,12 @@ extern unsigned int kobjsize(const void #if defined(CONFIG_X86) # define VM_PAT VM_ARCH_1 /* PAT reserves whole VMA at once (x86) */ +#if defined (CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS) +# define VM_PKEY_BIT0 VM_HIGH_ARCH_0 /* A protection key is a 4-bit value */ +# define VM_PKEY_BIT1 VM_HIGH_ARCH_1 +# define VM_PKEY_BIT2 VM_HIGH_ARCH_2 +# define VM_PKEY_BIT3 VM_HIGH_ARCH_3 +#endif #elif defined(CONFIG_PPC) # define VM_SAO VM_ARCH_1 /* Strong Access Ordering (powerpc) */ #elif defined(CONFIG_PARISC) _ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2015-12-04 1:21 UTC|newest] Thread overview: 145+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-12-04 1:14 [PATCH 00/34] x86: Memory Protection Keys (v5) Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-04 1:14 ` [PATCH 01/34] mm, gup: introduce concept of "foreign" get_user_pages() Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-04 1:14 ` [PATCH 02/34] x86, fpu: add placeholder for Processor Trace XSAVE state Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-04 1:14 ` [PATCH 03/34] x86, pkeys: Add Kconfig option Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-04 1:14 ` [PATCH 04/34] x86, pkeys: cpuid bit definition Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-04 1:14 ` [PATCH 05/34] x86, pkeys: define new CR4 bit Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-04 1:14 ` [PATCH 06/34] x86, pkeys: add PKRU xsave fields and data structure(s) Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-04 1:14 ` [PATCH 07/34] x86, pkeys: PTE bits for storing protection key Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-04 1:14 ` [PATCH 08/34] x86, pkeys: new page fault error code bit: PF_PK Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-04 1:14 ` [PATCH 09/34] x86, pkeys: store protection in high VMA flags Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-08 14:17 ` Thomas Gleixner 2015-12-08 14:17 ` Thomas Gleixner 2015-12-04 1:14 ` Dave Hansen [this message] 2015-12-04 1:14 ` [PATCH 10/34] x86, pkeys: arch-specific protection bits Dave Hansen 2015-12-08 15:15 ` [PATCH 10/34] x86, pkeys: arch-specific protection bitsy Thomas Gleixner 2015-12-08 15:15 ` Thomas Gleixner 2015-12-08 16:34 ` Dave Hansen 2015-12-08 16:34 ` Dave Hansen 2015-12-08 17:24 ` Thomas Gleixner 2015-12-08 17:24 ` Thomas Gleixner 2015-12-08 18:06 ` Dave Hansen 2015-12-08 18:29 ` Thomas Gleixner 2015-12-08 18:29 ` Thomas Gleixner 2015-12-08 18:35 ` Thomas Gleixner 2015-12-08 18:35 ` Thomas Gleixner 2015-12-04 1:14 ` [PATCH 11/34] x86, pkeys: pass VMA down in to fault signal generation code Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-04 1:14 ` [PATCH 12/34] signals, pkeys: notify userspace about protection key faults Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-04 1:14 ` [PATCH 13/34] x86, pkeys: fill in pkey field in siginfo Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-04 1:14 ` [PATCH 14/34] x86, pkeys: add functions to fetch PKRU Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-08 15:18 ` Thomas Gleixner 2015-12-08 15:18 ` Thomas Gleixner 2015-12-04 1:14 ` [PATCH 15/34] mm: factor out VMA fault permission checking Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-08 17:26 ` Thomas Gleixner 2015-12-08 17:26 ` Thomas Gleixner 2015-12-04 1:14 ` [PATCH 16/34] x86, mm: simplify get_user_pages() PTE bit handling Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-08 18:01 ` Thomas Gleixner 2015-12-08 18:01 ` Thomas Gleixner 2015-12-08 18:30 ` Dave Hansen 2015-12-08 18:30 ` Dave Hansen 2015-12-04 1:14 ` [PATCH 17/34] x86, pkeys: check VMAs and PTEs for protection keys Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-08 18:11 ` Thomas Gleixner 2015-12-08 18:11 ` Thomas Gleixner 2015-12-04 1:14 ` [PATCH 18/34] mm: add gup flag to indicate "foreign" mm access Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-04 1:14 ` [PATCH 19/34] x86, pkeys: optimize fault handling in access_error() Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-08 18:14 ` Thomas Gleixner 2015-12-08 18:14 ` Thomas Gleixner 2015-12-04 1:14 ` [PATCH 20/34] x86, pkeys: differentiate instruction fetches Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-08 18:17 ` Thomas Gleixner 2015-12-08 18:17 ` Thomas Gleixner 2015-12-04 1:14 ` [PATCH 21/34] x86, pkeys: dump PKRU with other kernel registers Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-08 18:19 ` Thomas Gleixner 2015-12-08 18:19 ` Thomas Gleixner 2015-12-04 1:14 ` [PATCH 22/34] x86, pkeys: dump PTE pkey in /proc/pid/smaps Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-08 18:20 ` Thomas Gleixner 2015-12-08 18:20 ` Thomas Gleixner 2015-12-04 1:14 ` [PATCH 23/34] x86, pkeys: add Kconfig prompt to existing config option Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-08 18:21 ` Thomas Gleixner 2015-12-08 18:21 ` Thomas Gleixner 2015-12-04 1:14 ` [PATCH 24/34] mm, multi-arch: pass a protection key in to calc_vm_flag_bits() Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-04 1:14 ` [PATCH 25/34] x86, pkeys: add arch_validate_pkey() Dave Hansen 2015-12-04 1:14 ` Dave Hansen 2015-12-08 18:39 ` Thomas Gleixner 2015-12-08 18:39 ` Thomas Gleixner 2015-12-04 1:15 ` [PATCH 26/34] mm: implement new mprotect_key() system call Dave Hansen 2015-12-04 1:15 ` Dave Hansen 2015-12-05 6:50 ` Michael Kerrisk (man-pages) 2015-12-05 6:50 ` Michael Kerrisk (man-pages) 2015-12-05 6:50 ` Michael Kerrisk (man-pages) 2015-12-07 16:44 ` Dave Hansen 2015-12-07 16:44 ` Dave Hansen 2015-12-09 11:08 ` Michael Kerrisk (man-pages) 2015-12-09 11:08 ` Michael Kerrisk (man-pages) 2015-12-09 15:48 ` Dave Hansen 2015-12-09 15:48 ` Dave Hansen 2015-12-09 16:45 ` Michael Kerrisk (man-pages) 2015-12-09 16:45 ` Michael Kerrisk (man-pages) 2015-12-09 16:45 ` Michael Kerrisk (man-pages) 2015-12-09 17:05 ` Dave Hansen 2015-12-09 17:05 ` Dave Hansen 2015-12-09 17:05 ` Dave Hansen 2015-12-11 20:13 ` Michael Kerrisk (man-pages) 2015-12-11 20:13 ` Michael Kerrisk (man-pages) 2015-12-04 1:15 ` [PATCH 27/34] x86, pkeys: make mprotect_key() mask off additional vm_flags Dave Hansen 2015-12-04 1:15 ` Dave Hansen 2015-12-08 18:41 ` Thomas Gleixner 2015-12-08 18:41 ` Thomas Gleixner 2015-12-04 1:15 ` [PATCH 28/34] x86: wire up mprotect_key() system call Dave Hansen 2015-12-04 1:15 ` Dave Hansen 2015-12-08 18:44 ` Thomas Gleixner 2015-12-08 18:44 ` Thomas Gleixner 2015-12-08 18:44 ` Thomas Gleixner 2015-12-08 19:06 ` Dave Hansen 2015-12-08 19:06 ` Dave Hansen 2015-12-08 20:38 ` Thomas Gleixner 2015-12-08 20:38 ` Thomas Gleixner 2015-12-08 20:38 ` Thomas Gleixner 2015-12-04 1:15 ` [PATCH 29/34] x86: separate out LDT init from context init Dave Hansen 2015-12-04 1:15 ` Dave Hansen 2015-12-08 18:45 ` Thomas Gleixner 2015-12-08 18:45 ` Thomas Gleixner 2015-12-04 1:15 ` [PATCH 30/34] x86, fpu: allow setting of XSAVE state Dave Hansen 2015-12-04 1:15 ` Dave Hansen 2015-12-08 18:48 ` Thomas Gleixner 2015-12-08 18:48 ` Thomas Gleixner 2015-12-04 1:15 ` [PATCH 31/34] x86, pkeys: allocation/free syscalls Dave Hansen 2015-12-04 1:15 ` Dave Hansen 2015-12-04 1:15 ` [PATCH 32/34] x86, pkeys: add pkey set/get syscalls Dave Hansen 2015-12-04 1:15 ` Dave Hansen 2015-12-04 1:15 ` [PATCH 33/34] x86, pkeys: actually enable Memory Protection Keys in CPU Dave Hansen 2015-12-04 1:15 ` Dave Hansen 2015-12-04 1:15 ` [PATCH 34/34] x86, pkeys: Documentation Dave Hansen 2015-12-04 1:15 ` Dave Hansen 2015-12-04 23:31 ` [PATCH 00/34] x86: Memory Protection Keys (v5) Andy Lutomirski 2015-12-04 23:31 ` Andy Lutomirski 2015-12-04 23:38 ` Dave Hansen 2015-12-04 23:38 ` Dave Hansen 2015-12-04 23:38 ` Dave Hansen 2015-12-11 20:16 ` Andy Lutomirski 2015-12-11 20:16 ` Andy Lutomirski 2015-12-11 20:16 ` Andy Lutomirski
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