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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-14 23:58:48 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-14 23:58:48 +0300 |
| commit | e95e7f627062be5e6ce971ce873e6234c91ffc50 (patch) | |
| tree | c00c00f2afb284037d4acc301f3be8a35a858acd /include/linux/kvm_host.h | |
| parent | 078838d56574694d0a4815d9c1b7f28e8844638b (diff) | |
| parent | 1524b745406a85ba201cb25df72110c1ccac0f72 (diff) | |
| download | linux-e95e7f627062be5e6ce971ce873e6234c91ffc50.tar.xz | |
Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull NOHZ changes from Ingo Molnar:
"This tree adds full dynticks support to KVM guests (support the
disabling of the timer tick on the guest). The main missing piece was
the recognition of guest execution as RCU extended quiescent state and
related changes"
* 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
kvm,rcu,nohz: use RCU extended quiescent state when running KVM guest
context_tracking: Export context_tracking_user_enter/exit
context_tracking: Run vtime_user_enter/exit only when state == CONTEXT_USER
context_tracking: Add stub context_tracking_is_enabled
context_tracking: Generalize context tracking APIs to support user and guest
context_tracking: Rename context symbols to prepare for transition state
ppc: Remove unused cpp symbols in kvm headers
Diffstat (limited to 'include/linux/kvm_host.h')
| -rw-r--r-- | include/linux/kvm_host.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 82af5d0b996e..ad45054309a0 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -779,7 +779,8 @@ static inline void kvm_guest_enter(void) * one time slice). Lets treat guest mode as quiescent state, just like * we do with user-mode execution. */ - rcu_virt_note_context_switch(smp_processor_id()); + if (!context_tracking_cpu_is_enabled()) + rcu_virt_note_context_switch(smp_processor_id()); } static inline void kvm_guest_exit(void) |