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KVM: PPC: Put segment registers in shared page

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Now that the actual mtsr doesn't do anything anymore, we can move the sr
contents over to the shared page, so a guest can directly read and write
its sr contents from guest context.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf
2010-08-03 02:29:27 +02:00
committed by Avi Kivity
parent 8e8651783f
commit df1bfa25d8
5 changed files with 11 additions and 12 deletions
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12
arch/powerpc/kvm/book3s_32_mmu.c
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@@ -88,9 +88,9 @@ static int kvmppc_mmu_book3s_32_xlate_bat(struct kvm_vcpu *vcpu, gva_t eaddr,
static int kvmppc_mmu_book3s_32_esid_to_vsid(struct kvm_vcpu *vcpu, ulong esid,
u64 *vsid);
static u32 find_sr(struct kvmppc_vcpu_book3s *vcpu_book3s, gva_t eaddr)
static u32 find_sr(struct kvm_vcpu *vcpu, gva_t eaddr)
{
return vcpu_book3s->sr[(eaddr >> 28) & 0xf];
return vcpu->arch.shared->sr[(eaddr >> 28) & 0xf];
}
static u64 kvmppc_mmu_book3s_32_ea_to_vp(struct kvm_vcpu *vcpu, gva_t eaddr,
@@ -211,7 +211,7 @@ static int kvmppc_mmu_book3s_32_xlate_pte(struct kvm_vcpu *vcpu, gva_t eaddr,
int i;
int found = 0;
sre = find_sr(vcpu_book3s, eaddr);
sre = find_sr(vcpu, eaddr);
dprintk_pte("SR 0x%lx: vsid=0x%x, raw=0x%x\n", eaddr >> 28,
sr_vsid(sre), sre);
@@ -335,13 +335,13 @@ static int kvmppc_mmu_book3s_32_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
static u32 kvmppc_mmu_book3s_32_mfsrin(struct kvm_vcpu *vcpu, u32 srnum)
{
return to_book3s(vcpu)->sr[srnum];
return vcpu->arch.shared->sr[srnum];
}
static void kvmppc_mmu_book3s_32_mtsrin(struct kvm_vcpu *vcpu, u32 srnum,
ulong value)
{
to_book3s(vcpu)->sr[srnum] = value;
vcpu->arch.shared->sr[srnum] = value;
kvmppc_mmu_map_segment(vcpu, srnum << SID_SHIFT);
}
@@ -358,7 +358,7 @@ static int kvmppc_mmu_book3s_32_esid_to_vsid(struct kvm_vcpu *vcpu, ulong esid,
u64 gvsid = esid;
if (vcpu->arch.shared->msr & (MSR_DR|MSR_IR)) {
sr = find_sr(to_book3s(vcpu), ea);
sr = find_sr(vcpu, ea);
if (sr_valid(sr))
gvsid = sr_vsid(sr);
}