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| author | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2009-02-18 08:46:21 +0100 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2009-03-30 08:36:00 +0200 |
| commit | b407fc57b815b2016186220baabc76cc8264206e (patch) | |
| tree | 29949f727af8b6c19fd689fa10f123ea84c03cb0 /include/asm-generic/pgtable.h | |
| parent | x86/pvops: replace arch_enter_lazy_cpu_mode with arch_start_context_switch (diff) | |
| download | linux-b407fc57b815b2016186220baabc76cc8264206e.tar.xz linux-b407fc57b815b2016186220baabc76cc8264206e.zip | |
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 'include/asm-generic/pgtable.h')
0 files changed, 0 insertions, 0 deletions