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Commit 44075d95 authored by Paul Mackerras's avatar Paul Mackerras Committed by Benjamin Herrenschmidt
Browse files

powerpc/kvm: Fix kvmppc_core_pending_dec 



The vcpu->arch.pending_exceptions field is a bitfield indexed by
interrupt priority number as returned by kvmppc_book3s_vec2irqprio.
However, kvmppc_core_pending_dec was using an interrupt vector shifted
by 7 as the bit index.  Fix it to use the irqprio value for the
decrementer interrupt instead.  This problem was found by code
inspection.

Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent f38aa708

arch/powerpc/kvm/book3s.c

+1 −1
Original line number Diff line number Diff line
@@ -236,7 +236,7 @@ void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu) 


int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)

{

	return test_bit(BOOK3S_INTERRUPT_DECREMENTER >> 7, &vcpu->arch.pending_exceptions);

	return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);

}



void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)