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author | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2009-02-17 23:46:21 -0800 |
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committer | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2009-03-29 23:36:00 -0700 |
commit | b407fc57b815b2016186220baabc76cc8264206e (patch) | |
tree | 29949f727af8b6c19fd689fa10f123ea84c03cb0 /drivers/pci/pci-stub.c | |
parent | 7fd7d83d49914f03aefffba6aee09032fcd54cce (diff) |
x86/paravirt: flush pending mmu updates on context switch
Impact: allow preemption during lazy mmu updates
If we're in lazy mmu mode when context switching, leave
lazy mmu mode, but remember the task's state in
TIF_LAZY_MMU_UPDATES. When we resume the task, check this
flag and re-enter lazy mmu mode if its set.
This sets things up for allowing lazy mmu mode while preemptible,
though that won't actually be active until the next change.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Diffstat (limited to 'drivers/pci/pci-stub.c')
0 files changed, 0 insertions, 0 deletions