Paul Mackerras 0d808df06a KVM: PPC: Book3S HV: Save/restore XER in checkpointed register state ... When switching from/to a guest that has a transaction in progress, we need to save/restore the checkpointed register state. Although XER is part of the CPU state that gets checkpointed, the code that does this saving and restoring doesn't save/restore XER. This fixes it by saving and restoring the XER. To allow userspace to read/write the checkpointed XER value, we also add a new ONE_REG specifier. The visible effect of this bug is that the guest may see its XER value being corrupted when it uses transactions. Fixes: e4e3812150 ("KVM: PPC: Book3S HV: Add transactional memory support") Fixes: 0a8eccefcb ("KVM: PPC: Book3S HV: Add missing code for transaction reclaim on guest exit") Cc: stable@vger.kernel.org # v3.15+ Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Paul Mackerras <paulus@ozlabs.org>		2016-11-21 15:17:55 +11:00
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asm	KVM: PPC: Book3S HV: Save/restore XER in checkpointed register state	2016-11-21 15:17:55 +11:00
uapi/asm	KVM: PPC: Book3S HV: Save/restore XER in checkpointed register state	2016-11-21 15:17:55 +11:00