From: Krish Sadhukhan <krish.sadhukhan@oracle.com>
To: kvm@vger.kernel.org
Cc: pbonzini@redhat.com, rkrcmar@redhat.com, jmattson@google.com
Subject: [PATCH 7/8][KVM nVMX]: Enable "load IA32_PERF_GLOBAL_CTRL VM-{entry,exit} controls
Date: Wed, 24 Apr 2019 19:17:23 -0400 [thread overview]
Message-ID: <20190424231724.2014-8-krish.sadhukhan@oracle.com> (raw)
In-Reply-To: <20190424231724.2014-1-krish.sadhukhan@oracle.com>
...based on whether the guest CPU supports PMU
Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Suggested-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Karl Heubaum <karl.heubaum@oracle.com>
---
arch/x86/kvm/vmx/vmx.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 4d39f731bc33..fa9c786afcfa 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -6964,6 +6964,7 @@ static void nested_vmx_cr_fixed1_bits_update(struct kvm_vcpu *vcpu)
static void nested_vmx_entry_exit_ctls_update(struct kvm_vcpu *vcpu)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
+ bool pmu_enabled = guest_cpuid_has_pmu(vcpu);
if (kvm_mpx_supported()) {
bool mpx_enabled = guest_cpuid_has(vcpu, X86_FEATURE_MPX);
@@ -6976,6 +6977,17 @@ static void nested_vmx_entry_exit_ctls_update(struct kvm_vcpu *vcpu)
vmx->nested.msrs.exit_ctls_high &= ~VM_EXIT_CLEAR_BNDCFGS;
}
}
+ if (pmu_enabled) {
+ vmx->nested.msrs.entry_ctls_high |=
+ VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL;
+ vmx->nested.msrs.exit_ctls_high |=
+ VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL;
+ } else {
+ vmx->nested.msrs.entry_ctls_high &=
+ ~VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL;
+ vmx->nested.msrs.exit_ctls_high &=
+ ~VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL;
+ }
}
static void update_intel_pt_cfg(struct kvm_vcpu *vcpu)
--
2.17.2
next prev parent reply other threads:[~2019-04-24 23:43 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-24 23:17 [KVM nVMX]: Check "load IA32_PERF_GLOBAL_CTRL" on vmentry of nested guests Krish Sadhukhan
2019-04-24 23:17 ` [PATCH 1/8][KVMnVMX]: Enable "load IA32_PERF_GLOBAL_CTRL" VM-exit control for " Krish Sadhukhan
2019-05-13 18:49 ` Sean Christopherson
2019-05-13 22:08 ` Krish Sadhukhan
2019-04-24 23:17 ` [PATCH 2/8][KVM nVMX]: Enable "load IA32_PERF_GLOBAL_CTRL" VM-entry " Krish Sadhukhan
2019-05-13 18:49 ` Sean Christopherson
2019-04-24 23:17 ` [PATCH 3/8][KVM VMX]: Add a function to check reserved bits in MSR_CORE_PERF_GLOBAL_CTRL Krish Sadhukhan
2019-05-13 18:57 ` Sean Christopherson
2019-08-15 22:29 ` Jim Mattson
2019-04-24 23:17 ` [PATCH 4/8][KVM nVMX]: Check "load IA32_PERF_GLOBAL_CTRL" VM-exit control on vmentry of nested guests Krish Sadhukhan
2019-05-13 19:00 ` Sean Christopherson
2019-05-16 22:07 ` Krish Sadhukhan
2019-05-17 20:34 ` Sean Christopherson
2019-08-15 22:54 ` Jim Mattson
2019-04-24 23:17 ` [PATCH 5/8][KVM nVMX]: Check "load IA32_PERF_GLOBAL_CTRL" VM-entry " Krish Sadhukhan
2019-08-15 22:36 ` Jim Mattson
2019-04-24 23:17 ` [PATCH 6/8][KVM nVMX]: Load IA32_PERF_GLOBAL_CTRL MSR " Krish Sadhukhan
2019-08-15 22:44 ` Jim Mattson
2019-08-21 23:05 ` Krish Sadhukhan
2019-08-21 23:10 ` Jim Mattson
2019-08-23 5:29 ` Krish Sadhukhan
2019-08-23 15:57 ` Jim Mattson
2019-04-24 23:17 ` Krish Sadhukhan [this message]
2019-05-13 19:12 ` [PATCH 7/8][KVM nVMX]: Enable "load IA32_PERF_GLOBAL_CTRL VM-{entry,exit} controls Sean Christopherson
2019-08-15 23:02 ` Jim Mattson
2019-04-24 23:17 ` [PATCH 8/8][KVM nVMX]: Test "load IA32_PERF_GLOBAL_CTRL" controls on vmentry of nested guests Krish Sadhukhan
2019-05-13 18:46 ` [KVM nVMX]: Check "load IA32_PERF_GLOBAL_CTRL" " Sean Christopherson
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