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| author | Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2010-11-02 10:35:35 +0100 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-01-12 10:29:01 +0100 |
| commit | 15096ffceabb9693306982127348890886384aaa (patch) | |
| tree | 10eb51dd343830a56783a1b364f775b0ed28afd2 /virt/kvm/async_pf.c | |
| parent | KVM: avoid unnecessary wait for a async pf (diff) | |
| download | linux-15096ffceabb9693306982127348890886384aaa.tar.xz linux-15096ffceabb9693306982127348890886384aaa.zip | |
KVM: handle more completed apfs if possible
If it's no need to inject async #PF to PV guest we can handle
more completed apfs at one time, so we can retry guest #PF
as early as possible
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Acked-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'virt/kvm/async_pf.c')
| -rw-r--r-- | virt/kvm/async_pf.c | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/virt/kvm/async_pf.c b/virt/kvm/async_pf.c index 60df9e059e69..100c66ee0220 100644 --- a/virt/kvm/async_pf.c +++ b/virt/kvm/async_pf.c @@ -124,24 +124,24 @@ void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu) { struct kvm_async_pf *work; - if (list_empty_careful(&vcpu->async_pf.done) || - !kvm_arch_can_inject_async_page_present(vcpu)) - return; - - spin_lock(&vcpu->async_pf.lock); - work = list_first_entry(&vcpu->async_pf.done, typeof(*work), link); - list_del(&work->link); - spin_unlock(&vcpu->async_pf.lock); + while (!list_empty_careful(&vcpu->async_pf.done) && + kvm_arch_can_inject_async_page_present(vcpu)) { + spin_lock(&vcpu->async_pf.lock); + work = list_first_entry(&vcpu->async_pf.done, typeof(*work), + link); + list_del(&work->link); + spin_unlock(&vcpu->async_pf.lock); - if (work->page) - kvm_arch_async_page_ready(vcpu, work); - kvm_arch_async_page_present(vcpu, work); + if (work->page) + kvm_arch_async_page_ready(vcpu, work); + kvm_arch_async_page_present(vcpu, work); - list_del(&work->queue); - vcpu->async_pf.queued--; - if (work->page) - put_page(work->page); - kmem_cache_free(async_pf_cache, work); + list_del(&work->queue); + vcpu->async_pf.queued--; + if (work->page) + put_page(work->page); + kmem_cache_free(async_pf_cache, work); + } } int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, |