Commit 1f854112 authored May 19, 2014 by Nadav Amit Committed by Paolo Bonzini May 22, 2014

KVM: vmx: DR7 masking on task switch emulation is wrong



The DR7 masking which is done on task switch emulation should be in hex format
(clearing the local breakpoints enable bits 0,2,4 and 6).

Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent 65a7f03f

arch/x86/kvm/vmx.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -5401,7 +5401,7 @@ static int handle_task_switch(struct kvm_vcpu *vcpu)
		}

		/* clear all local breakpoint enable flags */
		vmcs_writel(GUEST_DR7, vmcs_readl(GUEST_DR7) & ~55);
		vmcs_writel(GUEST_DR7, vmcs_readl(GUEST_DR7) & ~0x55);

		/*
		* TODO: What about debug traps on tss switch?