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Message-Id: <1556654865-45045-1-git-send-email-pbonzini@redhat.com>
Date: Tue, 30 Apr 2019 22:07:45 +0200
From: Paolo Bonzini <pbonzini@...hat.com>
To: linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc: Sean Christopherson <sean.j.christopherson@...el.com>
Subject: [PATCH] KVM: x86: use direct accessors for RIP and RSP
Use specific inline functions for RIP and RSP instead of
going through kvm_register_read and kvm_register_write,
which are quite a mouthful. kvm_rsp_read and kvm_rsp_write
did not exist, so add them.
Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
---
arch/x86/kvm/kvm_cache_regs.h | 10 ++++++++++
arch/x86/kvm/svm.c | 8 ++++----
arch/x86/kvm/vmx/nested.c | 12 ++++++------
arch/x86/kvm/x86.c | 4 ++--
4 files changed, 22 insertions(+), 12 deletions(-)
diff --git a/arch/x86/kvm/kvm_cache_regs.h b/arch/x86/kvm/kvm_cache_regs.h
index d179b7d7860d..1cc6c47dc77e 100644
--- a/arch/x86/kvm/kvm_cache_regs.h
+++ b/arch/x86/kvm/kvm_cache_regs.h
@@ -65,6 +65,16 @@ static inline void kvm_rip_write(struct kvm_vcpu *vcpu, unsigned long val)
kvm_register_write(vcpu, VCPU_REGS_RIP, val);
}
+static inline unsigned long kvm_rsp_read(struct kvm_vcpu *vcpu)
+{
+ return kvm_register_read(vcpu, VCPU_REGS_RSP);
+}
+
+static inline void kvm_rsp_write(struct kvm_vcpu *vcpu, unsigned long val)
+{
+ kvm_register_write(vcpu, VCPU_REGS_RSP, val);
+}
+
static inline u64 kvm_pdptr_read(struct kvm_vcpu *vcpu, int index)
{
might_sleep(); /* on svm */
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 38aef3439799..893686cb0044 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -3389,8 +3389,8 @@ static int nested_svm_vmexit(struct vcpu_svm *svm)
(void)kvm_set_cr3(&svm->vcpu, hsave->save.cr3);
}
kvm_rax_write(&svm->vcpu, hsave->save.rax);
- kvm_register_write(&svm->vcpu, VCPU_REGS_RSP, hsave->save.rsp);
- kvm_register_write(&svm->vcpu, VCPU_REGS_RIP, hsave->save.rip);
+ kvm_rsp_write(&svm->vcpu, hsave->save.rsp);
+ kvm_rip_write(&svm->vcpu, hsave->save.rip);
svm->vmcb->save.dr7 = 0;
svm->vmcb->save.cpl = 0;
svm->vmcb->control.exit_int_info = 0;
@@ -3497,8 +3497,8 @@ static void enter_svm_guest_mode(struct vcpu_svm *svm, u64 vmcb_gpa,
svm->vmcb->save.cr2 = svm->vcpu.arch.cr2 = nested_vmcb->save.cr2;
kvm_rax_write(&svm->vcpu, nested_vmcb->save.rax);
- kvm_register_write(&svm->vcpu, VCPU_REGS_RSP, nested_vmcb->save.rsp);
- kvm_register_write(&svm->vcpu, VCPU_REGS_RIP, nested_vmcb->save.rip);
+ kvm_rsp_write(&svm->vcpu, nested_vmcb->save.rsp);
+ kvm_rip_write(&svm->vcpu, nested_vmcb->save.rip);
/* In case we don't even reach vcpu_run, the fields are not updated */
svm->vmcb->save.rax = nested_vmcb->save.rax;
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
index d97dbea150ba..04b40a98f60b 100644
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -2372,8 +2372,8 @@ static int prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12,
if (!enable_ept)
vcpu->arch.walk_mmu->inject_page_fault = vmx_inject_page_fault_nested;
- kvm_register_write(vcpu, VCPU_REGS_RSP, vmcs12->guest_rsp);
- kvm_register_write(vcpu, VCPU_REGS_RIP, vmcs12->guest_rip);
+ kvm_rsp_write(vcpu, vmcs12->guest_rsp);
+ kvm_rip_write(vcpu, vmcs12->guest_rip);
return 0;
}
@@ -3401,8 +3401,8 @@ static void sync_vmcs12(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
vmcs12->guest_cr0 = vmcs12_guest_cr0(vcpu, vmcs12);
vmcs12->guest_cr4 = vmcs12_guest_cr4(vcpu, vmcs12);
- vmcs12->guest_rsp = kvm_register_read(vcpu, VCPU_REGS_RSP);
- vmcs12->guest_rip = kvm_register_read(vcpu, VCPU_REGS_RIP);
+ vmcs12->guest_rsp = kvm_rsp_read(vcpu);
+ vmcs12->guest_rip = kvm_rip_read(vcpu);
vmcs12->guest_rflags = vmcs_readl(GUEST_RFLAGS);
vmcs12->guest_es_selector = vmcs_read16(GUEST_ES_SELECTOR);
@@ -3585,8 +3585,8 @@ static void load_vmcs12_host_state(struct kvm_vcpu *vcpu,
vcpu->arch.efer &= ~(EFER_LMA | EFER_LME);
vmx_set_efer(vcpu, vcpu->arch.efer);
- kvm_register_write(vcpu, VCPU_REGS_RSP, vmcs12->host_rsp);
- kvm_register_write(vcpu, VCPU_REGS_RIP, vmcs12->host_rip);
+ kvm_rsp_write(vcpu, vmcs12->host_rsp);
+ kvm_rip_write(vcpu, vmcs12->host_rip);
vmx_set_rflags(vcpu, X86_EFLAGS_FIXED);
vmx_set_interrupt_shadow(vcpu, 0);
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index b352a7c137cd..dc621f73e96b 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -8290,7 +8290,7 @@ static void __get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
regs->rdx = kvm_rdx_read(vcpu);
regs->rsi = kvm_rsi_read(vcpu);
regs->rdi = kvm_rdi_read(vcpu);
- regs->rsp = kvm_register_read(vcpu, VCPU_REGS_RSP);
+ regs->rsp = kvm_rsp_read(vcpu);
regs->rbp = kvm_rbp_read(vcpu);
#ifdef CONFIG_X86_64
regs->r8 = kvm_r8_read(vcpu);
@@ -8326,7 +8326,7 @@ static void __set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
kvm_rdx_write(vcpu, regs->rdx);
kvm_rsi_write(vcpu, regs->rsi);
kvm_rdi_write(vcpu, regs->rdi);
- kvm_register_write(vcpu, VCPU_REGS_RSP, regs->rsp);
+ kvm_rsp_write(vcpu, regs->rsp);
kvm_rbp_write(vcpu, regs->rbp);
#ifdef CONFIG_X86_64
kvm_r8_write(vcpu, regs->r8);
--
1.8.3.1
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