[RFCv3 17/17] powerpc/kvm: Advertise availablity of HPT resizing on KVM HV
From: David Gibson <hidden>
Date: 2016-03-21 03:52:21
Subsystem:
kernel virtual machine for powerpc (kvm/powerpc), linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
This updates the KVM_CAP_SPAPR_RESIZE_HPT capability to advertise the presence of in-kernel HPT resizing on KVM HV. In fact the HPT resizing isn't fully implemented, but this allows us to experiment with what's there. Signed-off-by: David Gibson <redacted> --- arch/powerpc/kvm/powerpc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 900393b..1b59b23 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c@@ -588,7 +588,10 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) r = 1; break; case KVM_CAP_SPAPR_RESIZE_HPT: - r = 1; /* resize allowed only if HPT is outside kernel */ + if (hv_enabled) + r = 2; /* In-kernel resize implementation */ + else + r = 1; /* outside kernel resize allowed */ break; #endif default:
--
2.5.0