From: Wanpeng Li <wanpengli@xxxxxxxxxxx> We should execute wbinvd on all dirty pCPUs when guest wbinvd exits to maintain datat consistency in order to deal with noncoherent DMA. smp_call_function_many() does not execute the provided function on the local core, this patch replaces it by on_each_cpu_mask(). Reported-by: Nadav Amit <namit@xxxxxxxxxx> Cc: Nadav Amit <namit@xxxxxxxxxx> Signed-off-by: Wanpeng Li <wanpengli@xxxxxxxxxxx> --- arch/x86/kvm/x86.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 012d5df..aa6d667 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -6638,7 +6638,7 @@ 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); -- 2.7.4
