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KVM: PPC: Fix error in BAT assignment

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BATs didn't work. Well, they did, but only up to BAT3. As soon as we
came to BAT4 the offset calculation was screwed up and we ended up
overwriting BAT0-3.

Fortunately, Linux hasn't been using BAT4+. It's still a good
idea to write correct code though.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Alexander Graf 2010-02-19 11:00:41 +01:00 committed by Avi Kivity
parent 963cf3dc63
commit dba2e123e7
1 changed files with 2 additions and 2 deletions
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4
arch/powerpc/kvm/book3s_64_emulate.c
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@ -233,13 +233,13 @@ static void kvmppc_write_bat(struct kvm_vcpu *vcpu, int sprn, u32 val)
bat = &vcpu_book3s->ibat[(sprn - SPRN_IBAT0U) / 2];
break;
case SPRN_IBAT4U ... SPRN_IBAT7L:
bat = &vcpu_book3s->ibat[(sprn - SPRN_IBAT4U) / 2];
bat = &vcpu_book3s->ibat[4 + ((sprn - SPRN_IBAT4U) / 2)];
break;
case SPRN_DBAT0U ... SPRN_DBAT3L:
bat = &vcpu_book3s->dbat[(sprn - SPRN_DBAT0U) / 2];
break;
case SPRN_DBAT4U ... SPRN_DBAT7L:
bat = &vcpu_book3s->dbat[(sprn - SPRN_DBAT4U) / 2];
bat = &vcpu_book3s->dbat[4 + ((sprn - SPRN_DBAT4U) / 2)];
break;
default:
BUG();