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Groups > linux.kernel > #1635308
| From | Bandan Das <bsd@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 3/3] nVMX: Advertise PML to L1 hypervisor |
| Date | 2017-05-04 00:20 +0200 |
| Message-ID | <tDaMO-2Zz-21@gated-at.bofh.it> (permalink) |
| References | <tDaMN-2Zz-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Advertise the PML bit in vmcs12 but clear it out
before running L2 since we don't depend on hardware support
for PML emulation.
Signed-off-by: Bandan Das <bsd@redhat.com>
---
arch/x86/kvm/vmx.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 5e5abb7..df71116 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -2763,8 +2763,11 @@ static void nested_vmx_setup_ctls_msrs(struct vcpu_vmx *vmx)
vmx->nested.nested_vmx_ept_caps |= VMX_EPT_EXTENT_GLOBAL_BIT |
VMX_EPT_EXTENT_CONTEXT_BIT | VMX_EPT_2MB_PAGE_BIT |
VMX_EPT_1GB_PAGE_BIT;
- if (enable_ept_ad_bits)
+ if (enable_ept_ad_bits) {
+ vmx->nested.nested_vmx_secondary_ctls_high |=
+ SECONDARY_EXEC_ENABLE_PML;
vmx->nested.nested_vmx_ept_caps |= VMX_EPT_AD_BIT;
+ }
} else
vmx->nested.nested_vmx_ept_caps = 0;
@@ -10080,6 +10083,7 @@ static int prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12,
if (exec_control & SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES)
vmcs_write64(APIC_ACCESS_ADDR, -1ull);
+ exec_control &= ~SECONDARY_EXEC_ENABLE_PML;
vmcs_write32(SECONDARY_VM_EXEC_CONTROL, exec_control);
}
--
2.9.3
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[PATCH 0/3] nVMX: Emulated Page Modification Logging for Nested Virtualization Bandan Das <bsd@redhat.com> - 2017-05-04 00:20 +0200
[PATCH 2/3] nVMX: Implement emulated Page Modification Logging Bandan Das <bsd@redhat.com> - 2017-05-04 00:20 +0200
Re: [PATCH 2/3] nVMX: Implement emulated Page Modification Logging Paolo Bonzini <pbonzini@redhat.com> - 2017-05-04 11:30 +0200
Re: [PATCH 2/3] nVMX: Implement emulated Page Modification Logging Bandan Das <bsd@redhat.com> - 2017-05-04 20:20 +0200
[PATCH 3/3] nVMX: Advertise PML to L1 hypervisor Bandan Das <bsd@redhat.com> - 2017-05-04 00:20 +0200
Re: [PATCH 3/3] nVMX: Advertise PML to L1 hypervisor Paolo Bonzini <pbonzini@redhat.com> - 2017-05-04 09:10 +0200
Re: [PATCH 3/3] nVMX: Advertise PML to L1 hypervisor Bandan Das <bsd@redhat.com> - 2017-05-04 20:30 +0200
Re: [PATCH 3/3] nVMX: Advertise PML to L1 hypervisor Paolo Bonzini <pbonzini@redhat.com> - 2017-05-05 09:30 +0200
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