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Commit 18b57ce2 authored by Nicolai Stange's avatar Nicolai Stange Committed by Thomas Gleixner
Browse files

x86/KVM/VMX: Don't set l1tf_flush_l1d from vmx_handle_external_intr() 



For VMEXITs caused by external interrupts, vmx_handle_external_intr()
indirectly calls into the interrupt handlers through the host's IDT.

It follows that these interrupts get accounted for in the
kvm_cpu_l1tf_flush_l1d per-cpu flag.

The subsequently executed vmx_l1d_flush() will thus be aware that some
interrupts have happened and conduct a L1d flush anyway.

Setting l1tf_flush_l1d from vmx_handle_external_intr() isn't needed
anymore. Drop it.

Signed-off-by: default avatarNicolai Stange <nstange@suse.de>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent ffcba43f

arch/x86/kvm/vmx.c

+0 −1
Original line number Diff line number Diff line
@@ -9983,7 +9983,6 @@ static void vmx_handle_external_intr(struct kvm_vcpu *vcpu) 
			[ss]"i"(__KERNEL_DS),

			[cs]"i"(__KERNEL_CS)

			);

		vcpu->arch.l1tf_flush_l1d = true;

	}

}

STACK_FRAME_NON_STANDARD(vmx_handle_external_intr);