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Message-Id: <20061127122837.EC47A25015E@cleopatra.q>
Date: Mon, 27 Nov 2006 12:28:37 -0000
From: Avi Kivity <avi@...ranet.com>
To: kvm-devel@...ts.sourceforge.net
Cc: linux-kernel@...r.kernel.org, akpm@...l.org
Subject: [PATCH 18/38] KVM: Make __set_cr4() an arch operation
Signed-off-by: Avi Kivity <avi@...ranet.com>
Index: linux-2.6/drivers/kvm/kvm.h
===================================================================
--- linux-2.6.orig/drivers/kvm/kvm.h
+++ linux-2.6/drivers/kvm/kvm.h
@@ -270,6 +270,7 @@ struct kvm_arch_ops {
void (*set_segment)(struct kvm_vcpu *vcpu,
struct kvm_segment *var, int seg);
void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
+ void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
@@ -339,7 +340,6 @@ void set_cr8(struct kvm_vcpu *vcpu, unsi
void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
void __set_efer(struct kvm_vcpu *vcpu, u64 efer);
-void __set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0);
void inject_gp(struct kvm_vcpu *vcpu);
Index: linux-2.6/drivers/kvm/kvm_main.c
===================================================================
--- linux-2.6.orig/drivers/kvm/kvm_main.c
+++ linux-2.6/drivers/kvm/kvm_main.c
@@ -645,15 +645,6 @@ void lmsw(struct kvm_vcpu *vcpu, unsigne
}
EXPORT_SYMBOL_GPL(lmsw);
-void __set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
-{
- vmcs_writel(CR4_READ_SHADOW, cr4);
- vmcs_writel(GUEST_CR4, cr4 | (vcpu->rmode.active ?
- KVM_RMODE_VM_CR4_ALWAYS_ON : KVM_PMODE_VM_CR4_ALWAYS_ON));
- vcpu->cr4 = cr4;
-}
-EXPORT_SYMBOL_GPL(__set_cr4);
-
void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
{
if (cr4 & CR4_RESEVED_BITS) {
@@ -680,7 +671,7 @@ void set_cr4(struct kvm_vcpu *vcpu, unsi
inject_gp(vcpu);
return;
}
- __set_cr4(vcpu, cr4);
+ kvm_arch_ops->set_cr4(vcpu, cr4);
spin_lock(&vcpu->kvm->lock);
kvm_mmu_reset_context(vcpu);
spin_unlock(&vcpu->kvm->lock);
@@ -1624,7 +1615,7 @@ static int kvm_dev_ioctl_set_sregs(struc
vcpu->cr0 = sregs->cr0;
mmu_reset_needed |= vcpu->cr4 != sregs->cr4;
- __set_cr4(vcpu, sregs->cr4);
+ kvm_arch_ops->set_cr4(vcpu, sregs->cr4);
if (mmu_reset_needed)
kvm_mmu_reset_context(vcpu);
Index: linux-2.6/drivers/kvm/vmx.c
===================================================================
--- linux-2.6.orig/drivers/kvm/vmx.c
+++ linux-2.6/drivers/kvm/vmx.c
@@ -545,6 +545,14 @@ static void vmx_set_cr0(struct kvm_vcpu
vcpu->cr0 = cr0;
}
+static void vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
+{
+ vmcs_writel(CR4_READ_SHADOW, cr4);
+ vmcs_writel(GUEST_CR4, cr4 | (vcpu->rmode.active ?
+ KVM_RMODE_VM_CR4_ALWAYS_ON : KVM_PMODE_VM_CR4_ALWAYS_ON));
+ vcpu->cr4 = cr4;
+}
+
static u64 vmx_get_segment_base(struct kvm_vcpu *vcpu, int seg)
{
struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
@@ -872,7 +880,7 @@ static int vmx_vcpu_setup(struct kvm_vcp
vcpu->cr0 = 0x60000010;
vmx_set_cr0(vcpu, vcpu->cr0); // enter rmode
- __set_cr4(vcpu, 0);
+ vmx_set_cr4(vcpu, 0);
#ifdef __x86_64__
__set_efer(vcpu, 0);
#endif
@@ -1597,6 +1605,7 @@ static struct kvm_arch_ops vmx_arch_ops
.get_segment = vmx_get_segment,
.set_segment = vmx_set_segment,
.set_cr0 = vmx_set_cr0,
+ .set_cr4 = vmx_set_cr4,
.get_idt = vmx_get_idt,
.set_idt = vmx_set_idt,
.get_gdt = vmx_get_gdt,
-
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