tree ffbbcc23ebd5a6dff17e29fd1b0da97fc0b40f00
parent 26798f88d58dff1b61abf04becf5055e6f860d4f
author Simon Guo <wei.guo.simon@gmail.com> 1527058926 +0800
committer Paul Mackerras <paulus@ozlabs.org> 1527813039 +1000

KVM: PPC: Book3S PR: Add guard code to prevent returning to guest with PR=0 and Transactional state

Currently PR KVM doesn't support transaction memory in guest privileged
state.

This patch adds a check at setting guest msr, so that we can never return
to guest with PR=0 and TS=0b10. A tabort will be emulated to indicate
this and fail transaction immediately.

[paulus@ozlabs.org - don't change the TM_CAUSE_MISC definition, instead
 use TM_CAUSE_KVM_FAC_UNAV.]

Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>