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