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KVM: PPC: Separate loadstore emulation from priv emulation

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Today the instruction emulator can get called via 2 separate code paths. It
can either be called by MMIO emulation detection code or by privileged
instruction traps.

This is bad, as both code paths prepare the environment differently. For MMIO
emulation we already know the virtual address we faulted on, so instructions
there don't have to actually fetch that information.

Split out the two separate use cases into separate files.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf
2014-06-18 14:53:49 +02:00
parent c12fb43c2f
commit d69614a295
5 changed files with 278 additions and 193 deletions
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2
arch/powerpc/kvm/powerpc.c
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@@ -272,7 +272,7 @@ int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
enum emulation_result er;
int r;
er = kvmppc_emulate_instruction(run, vcpu);
er = kvmppc_emulate_loadstore(vcpu);
switch (er) {
case EMULATE_DONE:
/* Future optimization: only reload non-volatiles if they were