On 16.07.14 08:02, Bharat Bhushan wrote:
SPRG3 is guest accessible and SPRG3 can be clobbered by host
or another guest, So this need to be restored when loading
guest state.
Signed-off-by: Bharat Bhushan <bharat.bhus...@freescale.com>
---
arch/powerpc/kvm/booke_interrupts.S | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/kvm/booke_interrupts.S
b/arch/powerpc/kvm/booke_interrupts.S
index 2c6deb5ef..0d3403f 100644
--- a/arch/powerpc/kvm/booke_interrupts.S
+++ b/arch/powerpc/kvm/booke_interrupts.S
@@ -459,6 +459,8 @@ lightweight_exit:
* written directly to the shared area, so we
* need to reload them here with the guest's values.
*/
+ PPC_LD(r3, VCPU_SHARED_SPRG3, r5)
+ mtspr SPRN_SPRG3, r3
We also need to restore it when resuming the host, no?
Alex
PPC_LD(r3, VCPU_SHARED_SPRG4, r5)
mtspr SPRN_SPRG4W, r3
PPC_LD(r3, VCPU_SHARED_SPRG5, r5)
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