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| author | Paul Mackerras <paulus@samba.org> | 2008-03-25 22:44:18 +0100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-03-25 22:44:18 +0100 |
| commit | 54f53f2b94feb72622bec7a8563fc487d9f97720 (patch) | |
| tree | ab0c4e1dcadd25a00fa7a4febf41bc43b864cf73 /arch/powerpc/kernel/process.c | |
| parent | [POWERPC] scanlog_init cleanup and minor fixes (diff) | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 (diff) | |
| download | linux-54f53f2b94feb72622bec7a8563fc487d9f97720.tar.xz linux-54f53f2b94feb72622bec7a8563fc487d9f97720.zip | |
Merge branch 'linux-2.6'
Diffstat (limited to 'arch/powerpc/kernel/process.c')
| -rw-r--r-- | arch/powerpc/kernel/process.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 7c8e3da23810..8d506d86e2df 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -353,6 +353,12 @@ struct task_struct *__switch_to(struct task_struct *prev, account_process_vtime(current); calculate_steal_time(); + /* + * We can't take a PMU exception inside _switch() since there is a + * window where the kernel stack SLB and the kernel stack are out + * of sync. Hard disable here. + */ + hard_irq_disable(); last = _switch(old_thread, new_thread); local_irq_restore(flags); |