From: Alexander Graf <agraf@suse.de>
To: kvm-ppc@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org
Subject: [PATCH] KVM: PPC: Make BAT only guest segments work
Date: Mon, 21 Jun 2010 15:24:55 +0200 [thread overview]
Message-ID: <1277126695-32081-1-git-send-email-agraf@suse.de> (raw)
When a guest sets its SR entry to invalid, we may still find a
corresponding entry in a BAT. So we need to make sure we're not
faulting on invalid SR entries, but instead just claim them to be
BAT resolved.
This resolves breakage experienced when using libogc based guests.
Signed-off-by: Alexander Graf <agraf@suse.de>
---
arch/powerpc/kvm/book3s_32_mmu.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/kvm/book3s_32_mmu.c b/arch/powerpc/kvm/book3s_32_mmu.c
index 0b10503..3292d76 100644
--- a/arch/powerpc/kvm/book3s_32_mmu.c
+++ b/arch/powerpc/kvm/book3s_32_mmu.c
@@ -354,10 +354,10 @@ static int kvmppc_mmu_book3s_32_esid_to_vsid(struct kvm_vcpu *vcpu, ulong esid,
*vsid = VSID_REAL_DR | gvsid;
break;
case MSR_DR|MSR_IR:
- if (!sr->valid)
- return -1;
-
- *vsid = sr->vsid;
+ if (sr->valid)
+ *vsid = sr->vsid;
+ else
+ *vsid = VSID_BAT | gvsid;
break;
default:
BUG();
--
1.6.0.2
next reply other threads:[~2010-06-21 13:25 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-21 13:24 Alexander Graf [this message]
2010-06-22 12:05 ` [PATCH] KVM: PPC: Make BAT only guest segments work Avi Kivity
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