[timekeeping,01/35] Drop vm_init_tsc

Commit Message

Zachary Amsden Aug. 20, 2010, 8:07 a.m. UTC

None

Patch

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 502e53f..960f9c9 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -394,7 +394,6 @@  struct kvm_arch {
 	gpa_t ept_identity_map_addr;
 
 	unsigned long irq_sources_bitmap;
-	u64 vm_init_tsc;
 	s64 kvmclock_offset;
 
 	struct kvm_xen_hvm_config xen_hvm_config;
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index cf56462..a8753e1 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -2518,7 +2518,7 @@  static int vmx_vcpu_setup(struct vcpu_vmx *vmx)
 {
 	u32 host_sysenter_cs, msr_low, msr_high;
 	u32 junk;
-	u64 host_pat, tsc_this, tsc_base;
+	u64 host_pat, tsc_this;
 	unsigned long a;
 	struct desc_ptr dt;
 	int i;
@@ -2659,12 +2659,8 @@  static int vmx_vcpu_setup(struct vcpu_vmx *vmx)
 		vmx->vcpu.arch.cr4_guest_owned_bits |= X86_CR4_PGE;
 	vmcs_writel(CR4_GUEST_HOST_MASK, ~vmx->vcpu.arch.cr4_guest_owned_bits);
 
-	tsc_base = vmx->vcpu.kvm->arch.vm_init_tsc;
-	rdtscll(tsc_this);
-	if (tsc_this < vmx->vcpu.kvm->arch.vm_init_tsc)
-		tsc_base = tsc_this;
-
-	guest_write_tsc(0, tsc_base);
+	tsc_this = native_read_tsc();
+	guest_write_tsc(0, tsc_this);
 
 	return 0;
 }
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index d5ac966..1bf9227 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5495,8 +5495,6 @@  struct  kvm *kvm_arch_create_vm(void)
 	/* Reserve bit 0 of irq_sources_bitmap for userspace irq source */
 	set_bit(KVM_USERSPACE_IRQ_SOURCE_ID, &kvm->arch.irq_sources_bitmap);
 
-	rdtscll(kvm->arch.vm_init_tsc);
-
 	return kvm;
 }