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KVM: PPC: Use accessor functions for GPR access

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All code in PPC KVM currently accesses gprs in the vcpu struct directly.

While there's nothing wrong with that wrt the current way gprs are stored
and loaded, it doesn't suffice for the PACA acceleration that will follow
in this patchset.

So let's just create little wrapper inline functions that we call whenever
a GPR needs to be read from or written to. The compiled code shouldn't really
change at all for now.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Alexander Graf
2010-01-08 02:58:01 +01:00
committed by Marcelo Tosatti
parent 0d178975d0
commit 8e5b26b55a
11 changed files with 274 additions and 225 deletions
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14
arch/powerpc/kvm/44x_tlb.c
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@@ -439,7 +439,7 @@ int kvmppc_44x_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws)
struct kvmppc_44x_tlbe *tlbe;
unsigned int gtlb_index;
gtlb_index = vcpu->arch.gpr[ra];
gtlb_index = kvmppc_get_gpr(vcpu, ra);
if (gtlb_index > KVM44x_GUEST_TLB_SIZE) {
printk("%s: index %d\n", __func__, gtlb_index);
kvmppc_dump_vcpu(vcpu);
@@ -455,15 +455,15 @@ int kvmppc_44x_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws)
switch (ws) {
case PPC44x_TLB_PAGEID:
tlbe->tid = get_mmucr_stid(vcpu);
tlbe->word0 = vcpu->arch.gpr[rs];
tlbe->word0 = kvmppc_get_gpr(vcpu, rs);
break;
case PPC44x_TLB_XLAT:
tlbe->word1 = vcpu->arch.gpr[rs];
tlbe->word1 = kvmppc_get_gpr(vcpu, rs);
break;
case PPC44x_TLB_ATTRIB:
tlbe->word2 = vcpu->arch.gpr[rs];
tlbe->word2 = kvmppc_get_gpr(vcpu, rs);
break;
default:
@@ -500,9 +500,9 @@ int kvmppc_44x_emul_tlbsx(struct kvm_vcpu *vcpu, u8 rt, u8 ra, u8 rb, u8 rc)
unsigned int as = get_mmucr_sts(vcpu);
unsigned int pid = get_mmucr_stid(vcpu);
ea = vcpu->arch.gpr[rb];
ea = kvmppc_get_gpr(vcpu, rb);
if (ra)
ea += vcpu->arch.gpr[ra];
ea += kvmppc_get_gpr(vcpu, ra);
gtlb_index = kvmppc_44x_tlb_index(vcpu, ea, pid, as);
if (rc) {
@@ -511,7 +511,7 @@ int kvmppc_44x_emul_tlbsx(struct kvm_vcpu *vcpu, u8 rt, u8 ra, u8 rb, u8 rc)
else
vcpu->arch.cr |= 0x20000000;
}
vcpu->arch.gpr[rt] = gtlb_index;
kvmppc_set_gpr(vcpu, rt, gtlb_index);
kvmppc_set_exit_type(vcpu, EMULATED_TLBSX_EXITS);
return EMULATE_DONE;