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authorSimon Guo <wei.guo.simon@gmail.com>2018-05-23 10:02:06 +0300
committerPaul Mackerras <paulus@ozlabs.org>2018-06-01 03:30:39 +0300
commit68ab07b985764ec5be816e7054a84b7ad121afc7 (patch)
treeffbbcc23ebd5a6dff17e29fd1b0da97fc0b40f00 /arch/powerpc/kvm/book3s_emulate.c
parent26798f88d58dff1b61abf04becf5055e6f860d4f (diff)
downloadlinux-68ab07b985764ec5be816e7054a84b7ad121afc7.tar.xz
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>
Diffstat (limited to 'arch/powerpc/kvm/book3s_emulate.c')
-rw-r--r--arch/powerpc/kvm/book3s_emulate.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c
index 34f910e03972..67d0fb40e8b2 100644
--- a/arch/powerpc/kvm/book3s_emulate.c
+++ b/arch/powerpc/kvm/book3s_emulate.c
@@ -199,7 +199,7 @@ static void kvmppc_emulate_trchkpt(struct kvm_vcpu *vcpu)
}
/* emulate tabort. at guest privilege state */
-static void kvmppc_emulate_tabort(struct kvm_vcpu *vcpu, int ra_val)
+void kvmppc_emulate_tabort(struct kvm_vcpu *vcpu, int ra_val)
{
/* currently we only emulate tabort. but no emulation of other
* tabort variants since there is no kernel usage of them at