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authorScott Wood <scottwood@freescale.com>2013-02-13 19:37:49 +0000
committerAlexander Graf <agraf@suse.de>2013-04-11 15:53:38 +0200
commit66a5fecdccd4f32a22d2d110cf4f002755b520d8 (patch)
tree41db4b099f1d7a90e2301f8526a24aaa5db0ece1 /arch/powerpc
parent6b2ba1a9129bd98b5268a4efb167c95189b3eabf (diff)
downloadlinux-66a5fecdccd4f32a22d2d110cf4f002755b520d8.tar.gz
kvm/ppc/e500: g2h_tlb1_map: clear old bit before setting new bit
It's possible that we're using the same host TLB1 slot to map (a presumably different portion of) the same guest TLB1 entry. Clear the bit in the map before setting it, so that if the esels are the same the bit will remain set. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kvm/e500_mmu_host.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/powerpc/kvm/e500_mmu_host.c b/arch/powerpc/kvm/e500_mmu_host.c
index 35fb80ec1f5..8e72b2124f6 100644
--- a/arch/powerpc/kvm/e500_mmu_host.c
+++ b/arch/powerpc/kvm/e500_mmu_host.c
@@ -507,13 +507,14 @@ static int kvmppc_e500_tlb1_map_tlb1(struct kvmppc_vcpu_e500 *vcpu_e500,
if (unlikely(vcpu_e500->host_tlb1_nv >= tlb1_max_shadow_size()))
vcpu_e500->host_tlb1_nv = 0;
- vcpu_e500->tlb_refs[1][sesel] = *ref;
- vcpu_e500->g2h_tlb1_map[esel] |= (u64)1 << sesel;
- vcpu_e500->gtlb_priv[1][esel].ref.flags |= E500_TLB_BITMAP;
if (vcpu_e500->h2g_tlb1_rmap[sesel]) {
unsigned int idx = vcpu_e500->h2g_tlb1_rmap[sesel] - 1;
vcpu_e500->g2h_tlb1_map[idx] &= ~(1ULL << sesel);
}
+
+ vcpu_e500->tlb_refs[1][sesel] = *ref;
+ vcpu_e500->gtlb_priv[1][esel].ref.flags |= E500_TLB_BITMAP;
+ vcpu_e500->g2h_tlb1_map[esel] |= (u64)1 << sesel;
vcpu_e500->h2g_tlb1_rmap[sesel] = esel + 1;
return sesel;