lkml.org 
[lkml]   [2019]   [Jun]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 1/5] KVM: X86: Dynamic allocate core residency msr state
Date
From: Wanpeng Li <wanpengli@tencent.com>

Dynamic allocate core residency msr state. MSR_CORE_C1_RES is unreadable
except for ATOM platform, so it is ignore here.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
---
arch/x86/include/asm/kvm_host.h | 11 +++++++++++
arch/x86/kvm/vmx/vmx.c | 5 +++++
2 files changed, 16 insertions(+)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 15e973d..bd615ee 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -538,6 +538,15 @@ struct kvm_vcpu_hv {
cpumask_t tlb_flush;
};

+#define NR_CORE_RESIDENCY_MSRS 3
+
+struct kvm_residency_msr {
+ s64 value;
+ u32 index;
+ bool delta_from_host;
+ bool count_with_host;
+};
+
struct kvm_vcpu_arch {
/*
* rip and regs accesses must go through
@@ -785,6 +794,8 @@ struct kvm_vcpu_arch {

/* AMD MSRC001_0015 Hardware Configuration */
u64 msr_hwcr;
+
+ struct kvm_residency_msr *core_cstate_msrs;
};

struct kvm_lpage_info {
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 0b241f4..4dc2459 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -6658,6 +6658,11 @@ static struct kvm_vcpu *vmx_create_vcpu(struct kvm *kvm, unsigned int id)
goto free_vmcs;
}

+ vmx->vcpu.arch.core_cstate_msrs = kzalloc(sizeof(struct kvm_residency_msr) *
+ NR_CORE_RESIDENCY_MSRS, GFP_KERNEL_ACCOUNT);
+ if (!vmx->vcpu.arch.core_cstate_msrs)
+ goto free_vmcs;
+
if (nested)
nested_vmx_setup_ctls_msrs(&vmx->nested.msrs,
vmx_capability.ept,
--
2.7.4
\
 
 \ /
  Last update: 2019-06-11 09:35    [W:0.053 / U:2.652 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site