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KVM: Replace smp_mb() with smp_load_acquire() in the kvm_flush_remote_tlbs()
authorLan Tianyu <tianyu.lan@intel.com>
Sun, 13 Mar 2016 03:10:28 +0000 (11:10 +0800)
committerPaolo Bonzini <pbonzini@redhat.com>
Tue, 22 Mar 2016 15:38:33 +0000 (16:38 +0100)
commit4ae3cb3a2551b41f22284f713e7d5e2b61a85c1d
tree153de5718a4688050cd3911a7442431a81620926tree | snapshot (tar.gz zip)
parent7bfdf2177812c30928bea3fc8bc86b9dea236f65commit | diff
KVM: Replace smp_mb() with smp_load_acquire() in the kvm_flush_remote_tlbs()

smp_load_acquire() is enough here and it's cheaper than smp_mb().
Adding a comment about reusing memory barrier of kvm_make_all_cpus_request()
here to keep order between modifications to the page tables and reading mode.

Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
virt/kvm/kvm_main.c diff | blob | blame | history