diff options
| author | David Woodhouse <dwmw2@infradead.org> | 2006-05-03 13:30:35 +0100 |
|---|---|---|
| committer | David Woodhouse <dwmw2@infradead.org> | 2006-05-03 13:30:35 +0100 |
| commit | edc4ff7c08e9885c40e60c4fb39fa42cc91a0602 (patch) | |
| tree | f375d28043dd4457428a841167dc93d760ba9a46 /arch/x86_64/kernel/process.c | |
| parent | cbb9a56177b16294ed347ba7fcb1c66c8adb5dc4 (diff) | |
| parent | e17df688f7064dae1417ce425dd1e4b71d24d63b (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/x86_64/kernel/process.c')
| -rw-r--r-- | arch/x86_64/kernel/process.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86_64/kernel/process.c b/arch/x86_64/kernel/process.c index 1c44b53cb15..fb903e65e07 100644 --- a/arch/x86_64/kernel/process.c +++ b/arch/x86_64/kernel/process.c @@ -575,8 +575,10 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) prev->userrsp = read_pda(oldrsp); write_pda(oldrsp, next->userrsp); write_pda(pcurrent, next_p); + /* This must be here to ensure both math_state_restore() and - kernel_fpu_begin() work consistently. */ + kernel_fpu_begin() work consistently. + And the AMD workaround requires it to be after DS reload. */ unlazy_fpu(prev_p); write_pda(kernelstack, task_stack_page(next_p) + THREAD_SIZE - PDA_STACKOFFSET); |