From: Scott Wood <scottwood@freescale.com>
Date: Mon, 15 Apr 2013 15:07:11 +0000 (+0000)
Subject: kvm/ppc: don't call complete_mmio_load when it's a store
X-Git-Tag: v3.12-rc1~895^2~36^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=be28a27c993ca6f806145d02dbe493baac83a8e9;p=kernel%2Fkernel-generic.git

kvm/ppc: don't call complete_mmio_load when it's a store

complete_mmio_load writes back the mmio result into the
destination register.  Doing this on a store results in
register corruption.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
---

diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 16b4595..a822659 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -683,7 +683,6 @@ int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
 
 	if (!kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
 			      bytes, &run->mmio.data)) {
-		kvmppc_complete_mmio_load(vcpu, run);
 		vcpu->mmio_needed = 0;
 		return EMULATE_DONE;
 	}