Move code that syncs dirty RSP and RIP registers back to the VMCS, into a
function. We will need to call this function from additional places in the
next patch.
Signed-off-by: Nadav Har'El <n...@il.ibm.com>
---
arch/x86/kvm/vmx.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
--- .before/arch/x86/kvm/vmx.c 2011-01-26 18:06:04.000000000 +0200
+++ .after/arch/x86/kvm/vmx.c 2011-01-26 18:06:04.000000000 +0200
@@ -5172,6 +5172,15 @@ static void vmx_cancel_injection(struct
vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, 0);
}
+static inline void sync_cached_regs_to_vmcs(struct kvm_vcpu *vcpu)
+{
+ if (test_bit(VCPU_REGS_RSP, (unsigned long *)&vcpu->arch.regs_dirty))
+ vmcs_writel(GUEST_RSP, vcpu->arch.regs[VCPU_REGS_RSP]);
+ if (test_bit(VCPU_REGS_RIP, (unsigned long *)&vcpu->arch.regs_dirty))
+ vmcs_writel(GUEST_RIP, vcpu->arch.regs[VCPU_REGS_RIP]);
+ vcpu->arch.regs_dirty = 0;
+}
+
#ifdef CONFIG_X86_64
#define R "r"
#define Q "q"
@@ -5193,10 +5202,7 @@ static void vmx_vcpu_run(struct kvm_vcpu
if (vmx->emulation_required && emulate_invalid_guest_state)
return;
- if (test_bit(VCPU_REGS_RSP, (unsigned long *)&vcpu->arch.regs_dirty))
- vmcs_writel(GUEST_RSP, vcpu->arch.regs[VCPU_REGS_RSP]);
- if (test_bit(VCPU_REGS_RIP, (unsigned long *)&vcpu->arch.regs_dirty))
- vmcs_writel(GUEST_RIP, vcpu->arch.regs[VCPU_REGS_RIP]);
+ sync_cached_regs_to_vmcs(vcpu);
/* When single-stepping over STI and MOV SS, we must clear the
* corresponding interruptibility bits in the guest state. Otherwise
@@ -5308,7 +5314,6 @@ static void vmx_vcpu_run(struct kvm_vcpu
vcpu->arch.regs_avail = ~((1 << VCPU_REGS_RIP) | (1 << VCPU_REGS_RSP)
| (1 << VCPU_EXREG_PDPTR)
| (1 << VCPU_EXREG_CR3));
- vcpu->arch.regs_dirty = 0;
vmx->idt_vectoring_info = vmcs_read32(IDT_VECTORING_INFO_FIELD);
--
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