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| author | Alexander Graf <agraf@suse.de> | 2010-02-19 11:00:31 +0100 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-04-25 12:34:47 +0300 |
| commit | 37f5bca64e206ed97e53f734d7de5b7c5ade3578 (patch) | |
| tree | fb5fd1922a9e4c7ae6700a0605a47e7a35f53cfb /arch/powerpc/include/asm/kvm_ppc.h | |
| parent | 3587d5348ced089666c51411bd9d771fb0b072cf (diff) | |
| download | lwn-37f5bca64e206ed97e53f734d7de5b7c5ade3578.tar.gz lwn-37f5bca64e206ed97e53f734d7de5b7c5ade3578.zip | |
KVM: PPC: Add AGAIN type for emulation return
Emulation of an instruction can have different outcomes. It can succeed,
fail, require MMIO, do funky BookE stuff - or it can just realize something's
odd and will be fixed the next time around.
Exactly that is what EMULATE_AGAIN means. Using that flag we can now tell
the caller that nothing happened, but we still want to go back to the
guest and see what happens next time we come around.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/powerpc/include/asm/kvm_ppc.h')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_ppc.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h index a288dd2fbb2c..07612189eb8b 100644 --- a/arch/powerpc/include/asm/kvm_ppc.h +++ b/arch/powerpc/include/asm/kvm_ppc.h @@ -37,6 +37,7 @@ enum emulation_result { EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */ EMULATE_DO_DCR, /* kvm_run filled with DCR request */ EMULATE_FAIL, /* can't emulate this instruction */ + EMULATE_AGAIN, /* something went wrong. go again */ }; extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); |