Commit 105e0c44 authored by Peng Hao's avatar Peng Hao Committed by Paolo Bonzini
Browse files

kvm: vmx: Fix typos comment in __loaded_vmcs_clear() 



Fix a comment documenting the memory barrier related to clearing a
loaded_vmcs; loaded_vmcs tracks the host CPU the VMCS is loaded on via
the field 'cpu', it doesn't have a 'vcpu' field.

Reviewed-by: default avatarSean Christopherson <seanjc@google.com>
Signed-off-by: default avatarPeng Hao <flyingpeng@tencent.com>
Message-Id: <20220222104029.70129-1-flyingpeng@tencent.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent fbc2dfe5

arch/x86/kvm/vmx/vmx.c

+4 −4
Original line number Diff line number Diff line
@@ -640,10 +640,10 @@ static void __loaded_vmcs_clear(void *arg) 


	/*

	 * Ensure all writes to loaded_vmcs, including deleting it from its

	 * current percpu list, complete before setting loaded_vmcs->vcpu to

	 * -1, otherwise a different cpu can see vcpu == -1 first and add

	 * loaded_vmcs to its percpu list before it's deleted from this cpu's

	 * list. Pairs with the smp_rmb() in vmx_vcpu_load_vmcs().

	 * current percpu list, complete before setting loaded_vmcs->cpu to

	 * -1, otherwise a different cpu can see loaded_vmcs->cpu == -1 first

	 * and add loaded_vmcs to its percpu list before it's deleted from this

	 * cpu's list. Pairs with the smp_rmb() in vmx_vcpu_load_vmcs().

	 */

	smp_wmb();