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, linux-api@vger.kernel.org Subject: [PATCH 32/34] x86, pkeys: add pkey set/get syscalls Date: Thu, 03 Dec 2015 17:15:08 -0800 [thread overview] Message-ID: <20151204011508.0275A2E4@viggo.jf.intel.com> (raw) In-Reply-To: <20151204011424.8A36E365@viggo.jf.intel.com> From: Dave Hansen <dave.hansen@linux.intel.com> This establishes two more system calls for protection key management: unsigned long pkey_get(int pkey); int pkey_set(int pkey, unsigned long access_rights); The return value from pkey_get() and the 'access_rights' passed to pkey_set() are the same format: a bitmask containing PKEY_DENY_WRITE and/or PKEY_DENY_ACCESS, or nothing set at all. These replace userspace's direct use of rdpkru/wrpkru. With current hardware, the kernel can not enforce that it has control over a given key. But, this at least allows the kernel to indicate to userspace that userspace does not control a given protection key. The kernel does _not_ enforce that this interface must be used for changes to PKRU, even for keys it has not "allocated". Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Cc: linux-api@vger.kernel.org --- b/arch/x86/entry/syscalls/syscall_32.tbl | 2 + b/arch/x86/entry/syscalls/syscall_64.tbl | 2 + b/arch/x86/include/asm/mmu_context.h | 2 + b/arch/x86/include/asm/pkeys.h | 2 - b/arch/x86/kernel/fpu/xstate.c | 55 +++++++++++++++++++++++++++++-- b/include/linux/pkeys.h | 8 ++++ b/mm/mprotect.c | 34 +++++++++++++++++++ 7 files changed, 102 insertions(+), 3 deletions(-) diff -puN arch/x86/entry/syscalls/syscall_32.tbl~pkey-syscalls-set-get arch/x86/entry/syscalls/syscall_32.tbl --- a/arch/x86/entry/syscalls/syscall_32.tbl~pkey-syscalls-set-get 2015-12-03 16:21:33.139012003 -0800 +++ b/arch/x86/entry/syscalls/syscall_32.tbl 2015-12-03 16:21:33.151012548 -0800 @@ -386,3 +386,5 @@ 377 i386 pkey_mprotect sys_pkey_mprotect 378 i386 pkey_alloc sys_pkey_alloc 379 i386 pkey_free sys_pkey_free +380 i386 pkey_get sys_pkey_get +381 i386 pkey_set sys_pkey_set diff -puN arch/x86/entry/syscalls/syscall_64.tbl~pkey-syscalls-set-get arch/x86/entry/syscalls/syscall_64.tbl --- a/arch/x86/entry/syscalls/syscall_64.tbl~pkey-syscalls-set-get 2015-12-03 16:21:33.141012094 -0800 +++ b/arch/x86/entry/syscalls/syscall_64.tbl 2015-12-03 16:21:33.152012593 -0800 @@ -335,6 +335,8 @@ 326 common pkey_mprotect sys_pkey_mprotect 327 common pkey_alloc sys_pkey_alloc 328 common pkey_free sys_pkey_free +329 common pkey_get sys_pkey_get +330 common pkey_set sys_pkey_set # # x32-specific system call numbers start at 512 to avoid cache impact diff -puN arch/x86/include/asm/mmu_context.h~pkey-syscalls-set-get arch/x86/include/asm/mmu_context.h --- a/arch/x86/include/asm/mmu_context.h~pkey-syscalls-set-get 2015-12-03 16:21:33.142012139 -0800 +++ b/arch/x86/include/asm/mmu_context.h 2015-12-03 16:21:33.152012593 -0800 @@ -340,5 +340,7 @@ static inline bool arch_pte_access_permi extern int arch_set_user_pkey_access(struct task_struct *tsk, int pkey, unsigned long init_val); +extern unsigned long arch_get_user_pkey_access(struct task_struct *tsk, + int pkey); #endif /* _ASM_X86_MMU_CONTEXT_H */ diff -puN arch/x86/include/asm/pkeys.h~pkey-syscalls-set-get arch/x86/include/asm/pkeys.h --- a/arch/x86/include/asm/pkeys.h~pkey-syscalls-set-get 2015-12-03 16:21:33.144012230 -0800 +++ b/arch/x86/include/asm/pkeys.h 2015-12-03 16:21:33.152012593 -0800 @@ -16,7 +16,7 @@ } while (0) static inline -bool mm_pkey_is_allocated(struct mm_struct *mm, unsigned long pkey) +bool mm_pkey_is_allocated(struct mm_struct *mm, int pkey) { if (!arch_validate_pkey(pkey)) return true; diff -puN arch/x86/kernel/fpu/xstate.c~pkey-syscalls-set-get arch/x86/kernel/fpu/xstate.c --- a/arch/x86/kernel/fpu/xstate.c~pkey-syscalls-set-get 2015-12-03 16:21:33.145012275 -0800 +++ b/arch/x86/kernel/fpu/xstate.c 2015-12-03 16:21:33.153012638 -0800 @@ -687,7 +687,7 @@ void fpu__resume_cpu(void) * * Note: does not work for compacted buffers. */ -void *__raw_xsave_addr(struct xregs_state *xsave, int xstate_feature_mask) +static void *__raw_xsave_addr(struct xregs_state *xsave, int xstate_feature_mask) { int feature_nr = fls64(xstate_feature_mask) - 1; @@ -862,6 +862,7 @@ out: #define NR_VALID_PKRU_BITS (CONFIG_NR_PROTECTION_KEYS * 2) #define PKRU_VALID_MASK (NR_VALID_PKRU_BITS - 1) +#define PKRU_INIT_STATE 0 /* * This will go out and modify the XSAVE buffer so that PKRU is @@ -880,6 +881,9 @@ int arch_set_user_pkey_access(struct tas int pkey_shift = (pkey * PKRU_BITS_PER_PKEY); u32 new_pkru_bits = 0; + /* Only support manipulating current task for now */ + if (tsk != current) + return -EINVAL; if (!arch_validate_pkey(pkey)) return -EINVAL; /* @@ -907,7 +911,7 @@ int arch_set_user_pkey_access(struct tas * state. */ if (!old_pkru_state) - new_pkru_state.pkru = 0; + new_pkru_state.pkru = PKRU_INIT_STATE; else new_pkru_state.pkru = old_pkru_state->pkru; @@ -932,4 +936,51 @@ int arch_set_user_pkey_access(struct tas return 0; } + +/* + * Figures out what the rights are currently for 'pkey'. + * Converts from PKRU's format to the user-visible PKEY_DISABLE_* + * format. + */ +unsigned long arch_get_user_pkey_access(struct task_struct *tsk, int pkey) +{ + struct fpu *fpu = ¤t->thread.fpu; + u32 pkru_reg; + int ret = 0; + + /* Only support manipulating current task for now */ + if (tsk != current) + return -1; + if (!boot_cpu_has(X86_FEATURE_OSPKE)) + return -1; + /* + * The contents of PKRU itself are invalid. Consult the + * task's XSAVE buffer for PKRU contents. This is much + * more expensive than reading PKRU directly, but should + * be rare or impossible with eagerfpu mode. + */ + if (!fpu->fpregs_active) { + struct xregs_state *xsave = &fpu->state.xsave; + struct pkru_state *pkru_state = + get_xsave_addr(xsave, XFEATURE_MASK_PKRU); + /* + * PKRU is in its init state and not present in + * the buffer in a saved form. + */ + if (!pkru_state) + return PKRU_INIT_STATE; + + return pkru_state->pkru; + } + /* + * Consult the user register directly. + */ + pkru_reg = read_pkru(); + if (!__pkru_allows_read(pkru_reg, pkey)) + ret |= PKEY_DISABLE_ACCESS; + if (!__pkru_allows_write(pkru_reg, pkey)) + ret |= PKEY_DISABLE_WRITE; + + return ret; +} #endif /* CONFIG_ARCH_HAS_PKEYS */ diff -puN include/linux/pkeys.h~pkey-syscalls-set-get include/linux/pkeys.h --- a/include/linux/pkeys.h~pkey-syscalls-set-get 2015-12-03 16:21:33.147012366 -0800 +++ b/include/linux/pkeys.h 2015-12-03 16:21:33.153012638 -0800 @@ -43,6 +43,14 @@ static inline int mm_pkey_free(struct mm static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey, unsigned long init_val) { + return -EINVAL; +} + +static inline +unsigned long arch_get_user_pkey_access(struct task_struct *tsk, int pkey) +{ + if (pkey) + return -1; return 0; } diff -puN mm/mprotect.c~pkey-syscalls-set-get mm/mprotect.c --- a/mm/mprotect.c~pkey-syscalls-set-get 2015-12-03 16:21:33.148012412 -0800 +++ b/mm/mprotect.c 2015-12-03 16:21:33.154012684 -0800 @@ -531,3 +531,37 @@ SYSCALL_DEFINE1(pkey_free, int, pkey) */ return ret; } + +SYSCALL_DEFINE1(pkey_get, int, pkey) +{ + unsigned long ret = 0; + + down_write(¤t->mm->mmap_sem); + if (!mm_pkey_is_allocated(current->mm, pkey)) + ret = -EBADF; + up_write(¤t->mm->mmap_sem); + + if (ret) + return ret; + + ret = arch_get_user_pkey_access(current, pkey); + + return ret; +} + +SYSCALL_DEFINE2(pkey_set, int, pkey, unsigned long, access_rights) +{ + unsigned long ret = 0; + + down_write(¤t->mm->mmap_sem); + if (!mm_pkey_is_allocated(current->mm, pkey)) + ret = -EBADF; + up_write(¤t->mm->mmap_sem); + + if (ret) + return ret; + + ret = arch_set_user_pkey_access(current, pkey, access_rights); + + return ret; +} _
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, linux-api@vger.kernel.org Subject: [PATCH 32/34] x86, pkeys: add pkey set/get syscalls Date: Thu, 03 Dec 2015 17:15:08 -0800 [thread overview] Message-ID: <20151204011508.0275A2E4@viggo.jf.intel.com> (raw) In-Reply-To: <20151204011424.8A36E365@viggo.jf.intel.com> From: Dave Hansen <dave.hansen@linux.intel.com> This establishes two more system calls for protection key management: unsigned long pkey_get(int pkey); int pkey_set(int pkey, unsigned long access_rights); The return value from pkey_get() and the 'access_rights' passed to pkey_set() are the same format: a bitmask containing PKEY_DENY_WRITE and/or PKEY_DENY_ACCESS, or nothing set at all. These replace userspace's direct use of rdpkru/wrpkru. With current hardware, the kernel can not enforce that it has control over a given key. But, this at least allows the kernel to indicate to userspace that userspace does not control a given protection key. The kernel does _not_ enforce that this interface must be used for changes to PKRU, even for keys it has not "allocated". Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Cc: linux-api@vger.kernel.org --- b/arch/x86/entry/syscalls/syscall_32.tbl | 2 + b/arch/x86/entry/syscalls/syscall_64.tbl | 2 + b/arch/x86/include/asm/mmu_context.h | 2 + b/arch/x86/include/asm/pkeys.h | 2 - b/arch/x86/kernel/fpu/xstate.c | 55 +++++++++++++++++++++++++++++-- b/include/linux/pkeys.h | 8 ++++ b/mm/mprotect.c | 34 +++++++++++++++++++ 7 files changed, 102 insertions(+), 3 deletions(-) diff -puN arch/x86/entry/syscalls/syscall_32.tbl~pkey-syscalls-set-get arch/x86/entry/syscalls/syscall_32.tbl --- a/arch/x86/entry/syscalls/syscall_32.tbl~pkey-syscalls-set-get 2015-12-03 16:21:33.139012003 -0800 +++ b/arch/x86/entry/syscalls/syscall_32.tbl 2015-12-03 16:21:33.151012548 -0800 @@ -386,3 +386,5 @@ 377 i386 pkey_mprotect sys_pkey_mprotect 378 i386 pkey_alloc sys_pkey_alloc 379 i386 pkey_free sys_pkey_free +380 i386 pkey_get sys_pkey_get +381 i386 pkey_set sys_pkey_set diff -puN arch/x86/entry/syscalls/syscall_64.tbl~pkey-syscalls-set-get arch/x86/entry/syscalls/syscall_64.tbl --- a/arch/x86/entry/syscalls/syscall_64.tbl~pkey-syscalls-set-get 2015-12-03 16:21:33.141012094 -0800 +++ b/arch/x86/entry/syscalls/syscall_64.tbl 2015-12-03 16:21:33.152012593 -0800 @@ -335,6 +335,8 @@ 326 common pkey_mprotect sys_pkey_mprotect 327 common pkey_alloc sys_pkey_alloc 328 common pkey_free sys_pkey_free +329 common pkey_get sys_pkey_get +330 common pkey_set sys_pkey_set # # x32-specific system call numbers start at 512 to avoid cache impact diff -puN arch/x86/include/asm/mmu_context.h~pkey-syscalls-set-get arch/x86/include/asm/mmu_context.h --- a/arch/x86/include/asm/mmu_context.h~pkey-syscalls-set-get 2015-12-03 16:21:33.142012139 -0800 +++ b/arch/x86/include/asm/mmu_context.h 2015-12-03 16:21:33.152012593 -0800 @@ -340,5 +340,7 @@ static inline bool arch_pte_access_permi extern int arch_set_user_pkey_access(struct task_struct *tsk, int pkey, unsigned long init_val); +extern unsigned long arch_get_user_pkey_access(struct task_struct *tsk, + int pkey); #endif /* _ASM_X86_MMU_CONTEXT_H */ diff -puN arch/x86/include/asm/pkeys.h~pkey-syscalls-set-get arch/x86/include/asm/pkeys.h --- a/arch/x86/include/asm/pkeys.h~pkey-syscalls-set-get 2015-12-03 16:21:33.144012230 -0800 +++ b/arch/x86/include/asm/pkeys.h 2015-12-03 16:21:33.152012593 -0800 @@ -16,7 +16,7 @@ } while (0) static inline -bool mm_pkey_is_allocated(struct mm_struct *mm, unsigned long pkey) +bool mm_pkey_is_allocated(struct mm_struct *mm, int pkey) { if (!arch_validate_pkey(pkey)) return true; diff -puN arch/x86/kernel/fpu/xstate.c~pkey-syscalls-set-get arch/x86/kernel/fpu/xstate.c --- a/arch/x86/kernel/fpu/xstate.c~pkey-syscalls-set-get 2015-12-03 16:21:33.145012275 -0800 +++ b/arch/x86/kernel/fpu/xstate.c 2015-12-03 16:21:33.153012638 -0800 @@ -687,7 +687,7 @@ void fpu__resume_cpu(void) * * Note: does not work for compacted buffers. */ -void *__raw_xsave_addr(struct xregs_state *xsave, int xstate_feature_mask) +static void *__raw_xsave_addr(struct xregs_state *xsave, int xstate_feature_mask) { int feature_nr = fls64(xstate_feature_mask) - 1; @@ -862,6 +862,7 @@ out: #define NR_VALID_PKRU_BITS (CONFIG_NR_PROTECTION_KEYS * 2) #define PKRU_VALID_MASK (NR_VALID_PKRU_BITS - 1) +#define PKRU_INIT_STATE 0 /* * This will go out and modify the XSAVE buffer so that PKRU is @@ -880,6 +881,9 @@ int arch_set_user_pkey_access(struct tas int pkey_shift = (pkey * PKRU_BITS_PER_PKEY); u32 new_pkru_bits = 0; + /* Only support manipulating current task for now */ + if (tsk != current) + return -EINVAL; if (!arch_validate_pkey(pkey)) return -EINVAL; /* @@ -907,7 +911,7 @@ int arch_set_user_pkey_access(struct tas * state. */ if (!old_pkru_state) - new_pkru_state.pkru = 0; + new_pkru_state.pkru = PKRU_INIT_STATE; else new_pkru_state.pkru = old_pkru_state->pkru; @@ -932,4 +936,51 @@ int arch_set_user_pkey_access(struct tas return 0; } + +/* + * Figures out what the rights are currently for 'pkey'. + * Converts from PKRU's format to the user-visible PKEY_DISABLE_* + * format. + */ +unsigned long arch_get_user_pkey_access(struct task_struct *tsk, int pkey) +{ + struct fpu *fpu = ¤t->thread.fpu; + u32 pkru_reg; + int ret = 0; + + /* Only support manipulating current task for now */ + if (tsk != current) + return -1; + if (!boot_cpu_has(X86_FEATURE_OSPKE)) + return -1; + /* + * The contents of PKRU itself are invalid. Consult the + * task's XSAVE buffer for PKRU contents. This is much + * more expensive than reading PKRU directly, but should + * be rare or impossible with eagerfpu mode. + */ + if (!fpu->fpregs_active) { + struct xregs_state *xsave = &fpu->state.xsave; + struct pkru_state *pkru_state = + get_xsave_addr(xsave, XFEATURE_MASK_PKRU); + /* + * PKRU is in its init state and not present in + * the buffer in a saved form. + */ + if (!pkru_state) + return PKRU_INIT_STATE; + + return pkru_state->pkru; + } + /* + * Consult the user register directly. + */ + pkru_reg = read_pkru(); + if (!__pkru_allows_read(pkru_reg, pkey)) + ret |= PKEY_DISABLE_ACCESS; + if (!__pkru_allows_write(pkru_reg, pkey)) + ret |= PKEY_DISABLE_WRITE; + + return ret; +} #endif /* CONFIG_ARCH_HAS_PKEYS */ diff -puN include/linux/pkeys.h~pkey-syscalls-set-get include/linux/pkeys.h --- a/include/linux/pkeys.h~pkey-syscalls-set-get 2015-12-03 16:21:33.147012366 -0800 +++ b/include/linux/pkeys.h 2015-12-03 16:21:33.153012638 -0800 @@ -43,6 +43,14 @@ static inline int mm_pkey_free(struct mm static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey, unsigned long init_val) { + return -EINVAL; +} + +static inline +unsigned long arch_get_user_pkey_access(struct task_struct *tsk, int pkey) +{ + if (pkey) + return -1; return 0; } diff -puN mm/mprotect.c~pkey-syscalls-set-get mm/mprotect.c --- a/mm/mprotect.c~pkey-syscalls-set-get 2015-12-03 16:21:33.148012412 -0800 +++ b/mm/mprotect.c 2015-12-03 16:21:33.154012684 -0800 @@ -531,3 +531,37 @@ SYSCALL_DEFINE1(pkey_free, int, pkey) */ return ret; } + +SYSCALL_DEFINE1(pkey_get, int, pkey) +{ + unsigned long ret = 0; + + down_write(¤t->mm->mmap_sem); + if (!mm_pkey_is_allocated(current->mm, pkey)) + ret = -EBADF; + up_write(¤t->mm->mmap_sem); + + if (ret) + return ret; + + ret = arch_get_user_pkey_access(current, pkey); + + return ret; +} + +SYSCALL_DEFINE2(pkey_set, int, pkey, unsigned long, access_rights) +{ + unsigned long ret = 0; + + down_write(¤t->mm->mmap_sem); + if (!mm_pkey_is_allocated(current->mm, pkey)) + ret = -EBADF; + up_write(¤t->mm->mmap_sem); + + if (ret) + return ret; + + ret = arch_set_user_pkey_access(current, pkey, access_rights); + + return ret; +} _ -- 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 1:15 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 ` [PATCH 10/34] x86, pkeys: arch-specific protection bits Dave Hansen 2015-12-04 1:14 ` 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 ` Dave Hansen [this message] 2015-12-04 1:15 ` [PATCH 32/34] x86, pkeys: add pkey set/get syscalls 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
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20151204011508.0275A2E4@viggo.jf.intel.com \ --to=dave@sr71.net \ --cc=dave.hansen@linux.intel.com \ --cc=linux-api@vger.kernel.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-mm@kvack.org \ --cc=x86@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.