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Merge branch 'x86/fpu' into x86/smap

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Reason for merge:
       x86/fpu changed the structure of some of the code that x86/smap
       changes; mostly fpu-internal.h but also minor changes to the
       signal code.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

Resolved Conflicts:
	arch/x86/ia32/ia32_signal.c
	arch/x86/include/asm/fpu-internal.h
	arch/x86/kernel/signal.c
This commit is contained in:
H. Peter Anvin
2012-09-21 17:18:44 -07:00
parent e59d1b0a24 b1a74bf821
commit 49b8c695e3
90 changed files with 1117 additions and 1156 deletions
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13
arch/x86/include/asm/xsave.h
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@@ -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"
@@ -69,8 +66,7 @@ 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;
@@ -85,9 +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;
}