Patchwork [PULL,01/41] KVM: PPC: E500: Ignore L1CSR1_ICFI,ICLFR

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Submitter Alexander Graf
Date May 30, 2014, 12:42 p.m.
Message ID <1401453776-55285-2-git-send-email-agraf@suse.de>
Download mbox | patch
Permalink /patch/354159/
State New
Headers show

Comments

Alexander Graf - May 30, 2014, 12:42 p.m.
The L1 instruction cache control register contains bits that indicate
that we're still handling a request. Mask those out when we set the SPR
so that a read doesn't assume we're still doing something.

Signed-off-by: Alexander Graf <agraf@suse.de>
---
 arch/powerpc/kvm/e500_emulate.c | 1 +
 1 file changed, 1 insertion(+)

Patch

diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c
index 89b7f82..95d886f 100644
--- a/arch/powerpc/kvm/e500_emulate.c
+++ b/arch/powerpc/kvm/e500_emulate.c
@@ -222,6 +222,7 @@  int kvmppc_core_emulate_mtspr_e500(struct kvm_vcpu *vcpu, int sprn, ulong spr_va
 		break;
 	case SPRN_L1CSR1:
 		vcpu_e500->l1csr1 = spr_val;
+		vcpu_e500->l1csr1 &= ~(L1CSR1_ICFI | L1CSR1_ICLFR);
 		break;
 	case SPRN_HID0:
 		vcpu_e500->hid0 = spr_val;