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| author | Mihai Caraman <mihai.caraman@freescale.com> | 2014-07-23 18:06:21 +0200 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2014-07-28 15:23:14 +0200 |
| commit | 51f047261e717b74b226f837a16455994b61ae30 (patch) | |
| tree | e94a57703fed176a72acef425cea442a8395746b /usr | |
| parent | KVM: PPC: Book3s: Remove kvmppc_read_inst() function (diff) | |
| download | linux-51f047261e717b74b226f837a16455994b61ae30.tar.xz linux-51f047261e717b74b226f837a16455994b61ae30.zip | |
KVM: PPC: Allow kvmppc_get_last_inst() to fail
On book3e, guest last instruction is read on the exit path using load
external pid (lwepx) dedicated instruction. This load operation may fail
due to TLB eviction and execute-but-not-read entries.
This patch lay down the path for an alternative solution to read the guest
last instruction, by allowing kvmppc_get_lat_inst() function to fail.
Architecture specific implmentations of kvmppc_load_last_inst() may read
last guest instruction and instruct the emulation layer to re-execute the
guest in case of failure.
Make kvmppc_get_last_inst() definition common between architectures.
Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'usr')
0 files changed, 0 insertions, 0 deletions