diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-05-10 21:10:48 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-05-10 21:10:48 -0700 |
| commit | 3e1b83ab3912a6f583897635bee0a2e0cd1545f7 (patch) | |
| tree | ce89473abe12bd31664ee302a098a46a2079ce95 /arch/x86/kernel/i387.c | |
| parent | 8e3e076c5a78519a9f64cd384e8f18bc21882ce0 (diff) | |
| parent | 82fd866701881623d69fe280dbac06ddff1fdef9 (diff) | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
x86: rdc: leds build/config fix
x86: sysfs cpu?/topology is empty in 2.6.25 (32-bit Intel system)
x86: revert commit 709f744 ("x86: bitops asm constraint fixes")
x86: restrict keyboard io ports reservation to make ipmi driver work
x86: fix fpu restore from sig return
x86: remove spew print out about bus to node mapping
x86: revert printk format warning change which is for linux-next
x86: cleanup PAT cpu validation
x86: geode: define geode_has_vsa2() even if CONFIG_MGEODE_LX is not set
x86: GEODE: cache results from geode_has_vsa2() and uninline
x86: revert geode config dependency
Diffstat (limited to 'arch/x86/kernel/i387.c')
| -rw-r--r-- | arch/x86/kernel/i387.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c index db6839b5319..e03cc952f23 100644 --- a/arch/x86/kernel/i387.c +++ b/arch/x86/kernel/i387.c @@ -450,7 +450,6 @@ static inline int restore_i387_fsave(struct _fpstate_ia32 __user *buf) { struct task_struct *tsk = current; - clear_fpu(tsk); return __copy_from_user(&tsk->thread.xstate->fsave, buf, sizeof(struct i387_fsave_struct)); } @@ -461,7 +460,6 @@ static int restore_i387_fxsave(struct _fpstate_ia32 __user *buf) struct user_i387_ia32_struct env; int err; - clear_fpu(tsk); err = __copy_from_user(&tsk->thread.xstate->fxsave, &buf->_fxsr_env[0], sizeof(struct i387_fxsave_struct)); /* mxcsr reserved bits must be masked to zero for security reasons */ @@ -478,6 +476,16 @@ int restore_i387_ia32(struct _fpstate_ia32 __user *buf) int err; if (HAVE_HWFP) { + struct task_struct *tsk = current; + + clear_fpu(tsk); + + if (!used_math()) { + err = init_fpu(tsk); + if (err) + return err; + } + if (cpu_has_fxsr) err = restore_i387_fxsave(buf); else |