From d359192feaf02861327339a9dda6b2b2d765c2bc Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Mon, 26 Jul 2010 18:32:39 +0300 Subject: [PATCH] KVM: VMX: Use host_gdt variable wherever we need the host gdt Now that we have the host gdt conveniently stored in a variable, make use of it instead of querying the cpu. Signed-off-by: Avi Kivity Signed-off-by: Marcelo Tosatti --- arch/x86/kvm/vmx.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 7bddfab12013..751a2d29f4ce 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -706,11 +706,10 @@ static void reload_tss(void) /* * VT restores TR but not its size. Useless. */ - struct desc_ptr gdt; + struct desc_ptr *gdt = &__get_cpu_var(host_gdt); struct desc_struct *descs; - native_store_gdt(&gdt); - descs = (void *)gdt.address; + descs = (void *)gdt->address; descs[GDT_ENTRY_TSS].type = 9; /* available TSS */ load_TR_desc(); } @@ -753,7 +752,7 @@ static bool update_transition_efer(struct vcpu_vmx *vmx, int efer_offset) static unsigned long segment_base(u16 selector) { - struct desc_ptr gdt; + struct desc_ptr *gdt = &__get_cpu_var(host_gdt); struct desc_struct *d; unsigned long table_base; unsigned long v; @@ -761,8 +760,7 @@ static unsigned long segment_base(u16 selector) if (!(selector & ~3)) return 0; - native_store_gdt(&gdt); - table_base = gdt.address; + table_base = gdt->address; if (selector & 4) { /* from ldt */ u16 ldt_selector = kvm_read_ldt(); @@ -897,7 +895,7 @@ static void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu) } if (vcpu->cpu != cpu) { - struct desc_ptr dt; + struct desc_ptr *gdt = &__get_cpu_var(host_gdt); unsigned long sysenter_esp; kvm_migrate_timers(vcpu); @@ -913,8 +911,7 @@ static void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu) * processors. */ vmcs_writel(HOST_TR_BASE, kvm_read_tr_base()); /* 22.2.4 */ - native_store_gdt(&dt); - vmcs_writel(HOST_GDTR_BASE, dt.address); /* 22.2.4 */ + vmcs_writel(HOST_GDTR_BASE, gdt->address); /* 22.2.4 */ rdmsrl(MSR_IA32_SYSENTER_ESP, sysenter_esp); vmcs_writel(HOST_IA32_SYSENTER_ESP, sysenter_esp); /* 22.2.3 */ -- 2.20.1