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| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-10-19 15:19:19 -0400 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-10-19 15:19:19 -0400 |
| commit | e05dacd71db0a5da7c1a44bcaab2a8a240b9c233 (patch) | |
| tree | 31382cf1c7d62c03126448affb2fc86e8c4aaa8b /arch/x86/include/asm/xsave.h | |
| parent | 3ab0b83bf6a1e834f4b884150d8012990c75d25d (diff) | |
| parent | ddffeb8c4d0331609ef2581d84de4d763607bd37 (diff) | |
| download | op-kernel-dev-e05dacd71db0a5da7c1a44bcaab2a8a240b9c233.zip op-kernel-dev-e05dacd71db0a5da7c1a44bcaab2a8a240b9c233.tar.gz | |
Merge commit 'v3.7-rc1' into stable/for-linus-3.7
* commit 'v3.7-rc1': (10892 commits)
Linux 3.7-rc1
x86, boot: Explicitly include autoconf.h for hostprogs
perf: Fix UAPI fallout
ARM: config: make sure that platforms are ordered by option string
ARM: config: sort select statements alphanumerically
UAPI: (Scripted) Disintegrate include/linux/byteorder
UAPI: (Scripted) Disintegrate include/linux
UAPI: Unexport linux/blk_types.h
UAPI: Unexport part of linux/ppp-comp.h
perf: Handle new rbtree implementation
procfs: don't need a PATH_MAX allocation to hold a string representation of an int
vfs: embed struct filename inside of names_cache allocation if possible
audit: make audit_inode take struct filename
vfs: make path_openat take a struct filename pointer
vfs: turn do_path_lookup into wrapper around struct filename variant
audit: allow audit code to satisfy getname requests from its names_list
vfs: define struct filename and have getname() return it
btrfs: Fix compilation with user namespace support enabled
userns: Fix posix_acl_file_xattr_userns gid conversion
userns: Properly print bluetooth socket uids
...
Diffstat (limited to 'arch/x86/include/asm/xsave.h')
| -rw-r--r-- | arch/x86/include/asm/xsave.h | 23 |
1 files changed, 9 insertions, 14 deletions
diff --git a/arch/x86/include/asm/xsave.h b/arch/x86/include/asm/xsave.h index 8a1b6f9..0415cda 100644 --- a/arch/x86/include/asm/xsave.h +++ b/arch/x86/include/asm/xsave.h @@ -34,17 +34,14 @@ extern unsigned int xstate_size; extern u64 pcntxt_mask; extern u64 xstate_fx_sw_bytes[USER_XSTATE_FX_SW_WORDS]; +extern struct xsave_struct *init_xstate_buf; extern void xsave_init(void); extern void update_regset_xstate_info(unsigned int size, u64 xstate_mask); extern int init_fpu(struct task_struct *child); -extern int check_for_xstate(struct i387_fxsave_struct __user *buf, - void __user *fpstate, - struct _fpx_sw_bytes *sw); -static inline int fpu_xrstor_checking(struct fpu *fpu) +static inline int fpu_xrstor_checking(struct xsave_struct *fx) { - struct xsave_struct *fx = &fpu->state->xsave; int err; asm volatile("1: .byte " REX_PREFIX "0x0f,0xae,0x2f\n\t" @@ -69,13 +66,13 @@ static inline int xsave_user(struct xsave_struct __user *buf) * Clear the xsave header first, so that reserved fields are * initialized to zero. */ - err = __clear_user(&buf->xsave_hdr, - sizeof(struct xsave_hdr_struct)); + err = __clear_user(&buf->xsave_hdr, sizeof(buf->xsave_hdr)); if (unlikely(err)) return -EFAULT; - __asm__ __volatile__("1: .byte " REX_PREFIX "0x0f,0xae,0x27\n" - "2:\n" + __asm__ __volatile__(ASM_STAC "\n" + "1: .byte " REX_PREFIX "0x0f,0xae,0x27\n" + "2: " ASM_CLAC "\n" ".section .fixup,\"ax\"\n" "3: movl $-1,%[err]\n" " jmp 2b\n" @@ -84,9 +81,6 @@ static inline int xsave_user(struct xsave_struct __user *buf) : [err] "=r" (err) : "D" (buf), "a" (-1), "d" (-1), "0" (0) : "memory"); - if (unlikely(err) && __clear_user(buf, xstate_size)) - err = -EFAULT; - /* No need to clear here because the caller clears USED_MATH */ return err; } @@ -97,8 +91,9 @@ static inline int xrestore_user(struct xsave_struct __user *buf, u64 mask) u32 lmask = mask; u32 hmask = mask >> 32; - __asm__ __volatile__("1: .byte " REX_PREFIX "0x0f,0xae,0x2f\n" - "2:\n" + __asm__ __volatile__(ASM_STAC "\n" + "1: .byte " REX_PREFIX "0x0f,0xae,0x2f\n" + "2: " ASM_CLAC "\n" ".section .fixup,\"ax\"\n" "3: movl $-1,%[err]\n" " jmp 2b\n" |
