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| author | Wanpeng Li <wanpengli@tencent.com> | 2021-03-12 10:45:51 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-03-18 13:55:34 -0400 |
| commit | c2162e13d6e2f43e5001a356196871642de070ba (patch) | |
| tree | 02e4a1d84b6df817d1b5c91f69d2178e5da9980e /arch | |
| parent | b318e8decf6b9ef1bcf4ca06fae6d6a2cb5d5c5c (diff) | |
| download | linux-c2162e13d6e2f43e5001a356196871642de070ba.tar.bz2 | |
KVM: X86: Fix missing local pCPU when executing wbinvd on all dirty pCPUs
In order to deal with noncoherent DMA, we should execute wbinvd on
all dirty pCPUs when guest wbinvd exits to maintain data consistency.
smp_call_function_many() does not execute the provided function on the
local core, therefore replace it by on_each_cpu_mask().
Reported-by: Nadav Amit <namit@vmware.com>
Cc: Nadav Amit <namit@vmware.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Message-Id: <1615517151-7465-1-git-send-email-wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/x86.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index a04e78b89637..fe806e894212 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -6629,7 +6629,7 @@ static int kvm_emulate_wbinvd_noskip(struct kvm_vcpu *vcpu) int cpu = get_cpu(); cpumask_set_cpu(cpu, vcpu->arch.wbinvd_dirty_mask); - smp_call_function_many(vcpu->arch.wbinvd_dirty_mask, + on_each_cpu_mask(vcpu->arch.wbinvd_dirty_mask, wbinvd_ipi, NULL, 1); put_cpu(); cpumask_clear(vcpu->arch.wbinvd_dirty_mask); |