From: Paolo Bonzini <pbonzini@redhat.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Subject: [PATCH 1/3] KVM: VMX: introduce alloc_loaded_vmcs
Date: Tue, 16 Jan 2018 17:52:23 +0100 [thread overview]
Message-ID: <1516121545-30847-2-git-send-email-pbonzini@redhat.com> (raw)
In-Reply-To: <1516121545-30847-1-git-send-email-pbonzini@redhat.com>
Group together the calls to alloc_vmcs and loaded_vmcs_init. Soon we'll also
allocate an MSR bitmap there.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
arch/x86/kvm/vmx.c | 36 ++++++++++++++++++++++--------------
1 file changed, 22 insertions(+), 14 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 00d76292a5d2..d81fd4a87f2b 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3799,11 +3799,6 @@ static struct vmcs *alloc_vmcs_cpu(int cpu)
return vmcs;
}
-static struct vmcs *alloc_vmcs(void)
-{
- return alloc_vmcs_cpu(raw_smp_processor_id());
-}
-
static void free_vmcs(struct vmcs *vmcs)
{
free_pages((unsigned long)vmcs, vmcs_config.order);
@@ -3835,6 +3830,22 @@ static void vmx_nested_free_vmcs02(struct vcpu_vmx *vmx)
free_loaded_vmcs(loaded_vmcs);
}
+static struct vmcs *alloc_vmcs(void)
+{
+ return alloc_vmcs_cpu(raw_smp_processor_id());
+}
+
+static int alloc_loaded_vmcs(struct loaded_vmcs *loaded_vmcs)
+{
+ loaded_vmcs->vmcs = alloc_vmcs();
+ if (!loaded_vmcs->vmcs)
+ return -ENOMEM;
+
+ loaded_vmcs->shadow_vmcs = NULL;
+ loaded_vmcs_init(loaded_vmcs);
+ return 0;
+}
+
static void free_kvm_area(void)
{
int cpu;
@@ -7168,12 +7179,11 @@ static int enter_vmx_operation(struct kvm_vcpu *vcpu)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
struct vmcs *shadow_vmcs;
+ int r;
- vmx->nested.vmcs02.vmcs = alloc_vmcs();
- vmx->nested.vmcs02.shadow_vmcs = NULL;
- if (!vmx->nested.vmcs02.vmcs)
+ r = alloc_loaded_vmcs(&vmx->nested.vmcs02);
+ if (r < 0)
goto out_vmcs02;
- loaded_vmcs_init(&vmx->nested.vmcs02);
if (cpu_has_vmx_msr_bitmap()) {
vmx->nested.msr_bitmap =
@@ -9546,13 +9556,11 @@ static struct kvm_vcpu *vmx_create_vcpu(struct kvm *kvm, unsigned int id)
if (!vmx->guest_msrs)
goto free_pml;
- vmx->loaded_vmcs = &vmx->vmcs01;
- vmx->loaded_vmcs->vmcs = alloc_vmcs();
- vmx->loaded_vmcs->shadow_vmcs = NULL;
- if (!vmx->loaded_vmcs->vmcs)
+ err = alloc_loaded_vmcs(&vmx->vmcs01);
+ if (err < 0)
goto free_msrs;
- loaded_vmcs_init(vmx->loaded_vmcs);
+ vmx->loaded_vmcs = &vmx->vmcs01;
cpu = get_cpu();
vmx_vcpu_load(&vmx->vcpu, cpu);
vmx->vcpu.cpu = cpu;
--
1.8.3.1
next prev parent reply other threads:[~2018-01-16 16:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-16 16:52 [PATCH 0/3] KVM: VMX: per-VCPU MSR bitmaps Paolo Bonzini
2018-01-16 16:52 ` Paolo Bonzini [this message]
2018-01-16 17:27 ` [PATCH 1/3] KVM: VMX: introduce alloc_loaded_vmcs David Hildenbrand
2018-01-16 17:38 ` Paolo Bonzini
2018-01-16 16:52 ` [PATCH 2/3] KVM: VMX: use same MSR bitmaps for 32-/64-bit modes Paolo Bonzini
2018-01-16 16:52 ` [PATCH 3/3] KVM: VMX: make MSR bitmaps per-VCPU Paolo Bonzini
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