On 7/19/23 01:44, Sean Christopherson wrote:
Signed-off-by: Sean Christopherson<sea...@google.com>
---
arch/powerpc/kvm/powerpc.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 7197c8256668..5cf9e5e3112a 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -634,10 +634,11 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long
ext)
case KVM_CAP_SYNC_MMU:
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
r = hv_enabled;
This could actually be unnecessarily conservative. Even book3s_pr.c
knows how to do unmap and set_spte, so it should be able to support
KVM_CAP_SYNC_MMU. Alex, Nick, do you remember any of this? This would
mean moving KVM_CAP_SYNC_MMU to virt/kvm/kvm_main.c, which is nice.
Paolo
-#elif defined(KVM_ARCH_WANT_MMU_NOTIFIER)
- r = 1;
#else
- r = 0;
+#ifndef KVM_ARCH_WANT_MMU_NOTIFIER
+ BUILD_BUG();
+#endif
+ r = 1;
#endif
break;
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
