diff options
| author | Andrea Arcangeli <aarcange@redhat.com> | 2011-02-16 23:45:22 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-03-10 08:41:57 (GMT) |
| commit | a79e53d85683c6dd9f99c90511028adc2043031f (patch) | |
| tree | 191f423331b608a5f7f134f484ce62a9ee7fb4a6 /drivers/vhost | |
| parent | f86268549f424f83b9eb0963989270e14fbfc3de (diff) | |
| download | linux-fsl-qoriq-a79e53d85683c6dd9f99c90511028adc2043031f.tar.xz | |
x86/mm: Fix pgd_lock deadlock
It's forbidden to take the page_table_lock with the irq disabled
or if there's contention the IPIs (for tlb flushes) sent with
the page_table_lock held will never run leading to a deadlock.
Nobody takes the pgd_lock from irq context so the _irqsave can be
removed.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: <stable@kernel.org>
LKML-Reference: <201102162345.p1GNjMjm021738@imap1.linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/vhost')
0 files changed, 0 insertions, 0 deletions