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Commit 3fe913e7 authored by Izik Eidus's avatar Izik Eidus Committed by Avi Kivity
Browse files

KVM: x86: task switch: fix wrong bit setting for the busy flag 



The busy bit is bit 1 of the type field, not bit 8.

Signed-off-by: default avatarIzik Eidus <izike@qumranet.com>
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent 1439442c

arch/x86/kvm/x86.c

+2 −2
Original line number Diff line number Diff line
@@ -3484,7 +3484,7 @@ int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason) 
	}



	if (reason == TASK_SWITCH_IRET || reason == TASK_SWITCH_JMP) {

		cseg_desc.type &= ~(1 << 8); //clear the B flag

		cseg_desc.type &= ~(1 << 1); //clear the B flag

		save_guest_segment_descriptor(vcpu, tr_seg.selector,

					      &cseg_desc);

	}
@@ -3510,7 +3510,7 @@ int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason) 
	}



	if (reason != TASK_SWITCH_IRET) {

		nseg_desc.type |= (1 << 8);

		nseg_desc.type |= (1 << 1);

		save_guest_segment_descriptor(vcpu, tss_selector,

					      &nseg_desc);

	}