[PULL,39/41] KVM: PPC: Book3S HV: Fix machine check delivery to guest

Submitted by Alexander Graf on May 30, 2014, 12:42 p.m.


Message ID 1401453776-55285-40-git-send-email-agraf@suse.de
State New
Headers show

Commit Message

Alexander Graf May 30, 2014, 12:42 p.m.
From: Paul Mackerras <paulus@samba.org>

The code that delivered a machine check to the guest after handling
it in real mode failed to load up r11 before calling kvmppc_msr_interrupt,
which needs the old MSR value in r11 so it can see the transactional
state there.  This adds the missing load.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
 arch/powerpc/kvm/book3s_hv_rmhandlers.S | 1 +
 1 file changed, 1 insertion(+)

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diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index 60fe8ba..220aefb 100644
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -2144,6 +2144,7 @@  machine_check_realmode:
 	beq	mc_cont
 	/* If not, deliver a machine check.  SRR0/1 are already set */
+	ld	r11, VCPU_MSR(r9)
 	bl	kvmppc_msr_interrupt
 	b	fast_interrupt_c_return