summaryrefslogtreecommitdiffstats
path: root/tools/include
diff options
context:
space:
mode:
authorDavid Dunn <daviddunn@google.com>2022-02-23 22:57:41 +0000
committerPaolo Bonzini <pbonzini@redhat.com>2022-02-25 08:20:14 -0500
commitba7bb663f5547ef474c98df99a97bb4a13c5715f (patch)
treeedf880ca47225e0903485a4ff16a55824152cdd8 /tools/include
parent925088781eede43cf6616a1197c31dee451b7948 (diff)
downloadlinux-ba7bb663f5547ef474c98df99a97bb4a13c5715f.tar.bz2
KVM: x86: Provide per VM capability for disabling PMU virtualization
Add a new capability, KVM_CAP_PMU_CAPABILITY, that takes a bitmask of settings/features to allow userspace to configure PMU virtualization on a per-VM basis. For now, support a single flag, KVM_PMU_CAP_DISABLE, to allow disabling PMU virtualization for a VM even when KVM is configured with enable_pmu=true a module level. To keep KVM simple, disallow changing VM's PMU configuration after vCPUs have been created. Signed-off-by: David Dunn <daviddunn@google.com> Message-Id: <20220223225743.2703915-2-daviddunn@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/include')
-rw-r--r--tools/include/uapi/linux/kvm.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/include/uapi/linux/kvm.h b/tools/include/uapi/linux/kvm.h
index 507ee1f2aa96..bbc6b7c2dc1b 100644
--- a/tools/include/uapi/linux/kvm.h
+++ b/tools/include/uapi/linux/kvm.h
@@ -1135,6 +1135,8 @@ struct kvm_ppc_resize_hpt {
#define KVM_CAP_XSAVE2 208
#define KVM_CAP_SYS_ATTRIBUTES 209
#define KVM_CAP_PPC_AIL_MODE_3 210
+#define KVM_CAP_S390_MEM_OP_EXTENSION 211
+#define KVM_CAP_PMU_CAPABILITY 212
#ifdef KVM_CAP_IRQ_ROUTING
@@ -1971,6 +1973,8 @@ struct kvm_dirty_gfn {
#define KVM_BUS_LOCK_DETECTION_OFF (1 << 0)
#define KVM_BUS_LOCK_DETECTION_EXIT (1 << 1)
+#define KVM_PMU_CAP_DISABLE (1 << 0)
+
/**
* struct kvm_stats_header - Header of per vm/vcpu binary statistics data.
* @flags: Some extra information for header, always 0 for now.