[MODERATED] [RFC PATCH 6/6] kvm: handle host mode irqs 6

[Nicolai Stange <nstange@suse.de>]

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

It follows that these interrupts get accounted for in the
->kernel_mode_irq_gen generation counter. 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: Nicolai Stange <nstange@suse.de>
---
 arch/x86/kvm/vmx.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 3db17606c418..3c8da75518b4 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -9989,7 +9989,6 @@ 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);
-- 
2.13.7