On Tue, Dec 04, 2012 at 01:13:30PM +0100, Julian Stecklina wrote: > VMX behaves now as SVM wrt to FPU initialization. Code has been moved to > generic code path. General-purpose registers are now cleared on reset and > INIT. SVM code properly initializes EDX. > Looks good overall, small bug bellow and regenerate the patch against git://git.kernel.org/pub/scm/virt/kvm/kvm.git queue branch please. > Signed-off-by: Julian Stecklina <jsteckli@xxxxxxxxxxxxxxxxxxxx> > --- > arch/x86/kvm/cpuid.c | 1 + > arch/x86/kvm/svm.c | 14 ++++++-------- > arch/x86/kvm/vmx.c | 7 ------- > arch/x86/kvm/x86.c | 8 ++++++++ > 4 files changed, 15 insertions(+), 15 deletions(-) > > diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c > index 0595f13..aa468c2 100644 > --- a/arch/x86/kvm/cpuid.c > +++ b/arch/x86/kvm/cpuid.c > @@ -659,6 +659,7 @@ void kvm_cpuid(struct kvm_vcpu *vcpu, u32 *eax, u32 *ebx, u32 *ecx, u32 *edx) > } else > *eax = *ebx = *ecx = *edx = 0; > } > +EXPORT_SYMBOL_GPL(kvm_cpuid); > > void kvm_emulate_cpuid(struct kvm_vcpu *vcpu) > { > diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c > index baead95..6c50121 100644 > --- a/arch/x86/kvm/svm.c > +++ b/arch/x86/kvm/svm.c > @@ -20,6 +20,7 @@ > #include "mmu.h" > #include "kvm_cache_regs.h" > #include "x86.h" > +#include "cpuid.h" > > #include <linux/module.h> > #include <linux/mod_devicetable.h> > @@ -1190,6 +1191,8 @@ static void init_vmcb(struct vcpu_svm *svm) > static int svm_vcpu_reset(struct kvm_vcpu *vcpu) > { > struct vcpu_svm *svm = to_svm(vcpu); > + u32 dummy; > + u32 eax = 1; > > init_vmcb(svm); > > @@ -1198,8 +1201,9 @@ static int svm_vcpu_reset(struct kvm_vcpu *vcpu) > svm->vmcb->save.cs.base = svm->vcpu.arch.sipi_vector << 12; > svm->vmcb->save.cs.selector = svm->vcpu.arch.sipi_vector << 8; > } > - vcpu->arch.regs_avail = ~0; > - vcpu->arch.regs_dirty = ~0; > + > + kvm_cpuid(vcpu, &eax, &dummy, &dummy, &dummy); > + kvm_register_write(vcpu, VCPU_REGS_RDX, eax); > > return 0; > } > @@ -1257,10 +1261,6 @@ static struct kvm_vcpu *svm_create_vcpu(struct kvm *kvm, unsigned int id) > init_vmcb(svm); > kvm_write_tsc(&svm->vcpu, 0); > > - err = fx_init(&svm->vcpu); > - if (err) > - goto free_page4; > - > svm->vcpu.arch.apic_base = 0xfee00000 | MSR_IA32_APICBASE_ENABLE; > if (kvm_vcpu_is_bsp(&svm->vcpu)) > svm->vcpu.arch.apic_base |= MSR_IA32_APICBASE_BSP; > @@ -1269,8 +1269,6 @@ static struct kvm_vcpu *svm_create_vcpu(struct kvm *kvm, unsigned int id) > > return &svm->vcpu; > > -free_page4: > - __free_page(hsave_page); > free_page3: > __free_pages(nested_msrpm_pages, MSRPM_ALLOC_ORDER); > free_page2: > diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c > index ff66a3b..85cecfe 100644 > --- a/arch/x86/kvm/vmx.c > +++ b/arch/x86/kvm/vmx.c > @@ -3942,8 +3942,6 @@ static int vmx_vcpu_reset(struct kvm_vcpu *vcpu) > u64 msr; > int ret; > > - vcpu->arch.regs_avail = ~((1 << VCPU_REGS_RIP) | (1 << VCPU_REGS_RSP)); > - > vmx->rmode.vm86_active = 0; > > vmx->soft_vnmi_blocked = 0; > @@ -3955,10 +3953,6 @@ static int vmx_vcpu_reset(struct kvm_vcpu *vcpu) > msr |= MSR_IA32_APICBASE_BSP; > kvm_set_apic_base(&vmx->vcpu, msr); > > - ret = fx_init(&vmx->vcpu); > - if (ret != 0) > - goto out; > - > vmx_segment_cache_clear(vmx); > > seg_setup(VCPU_SREG_CS); > @@ -3999,7 +3993,6 @@ static int vmx_vcpu_reset(struct kvm_vcpu *vcpu) > kvm_rip_write(vcpu, 0xfff0); > else > kvm_rip_write(vcpu, 0); > - kvm_register_write(vcpu, VCPU_REGS_RSP, 0); > > vmcs_writel(GUEST_DR7, 0x400); > > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c > index 2966c84..2e031bf 100644 > --- a/arch/x86/kvm/x86.c > +++ b/arch/x86/kvm/x86.c > @@ -6066,6 +6066,10 @@ int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu) > > kvm_pmu_reset(vcpu); > > + memset(vcpu->arch.regs, 0, sizeof(vcpu->arch.regs)); > + vcpu->arch.regs_avail = ~0; > + vcpu->arch.regs_dirty = ~0; > + > return kvm_x86_ops->vcpu_reset(vcpu); > } > > @@ -6229,6 +6233,10 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) > if (!zalloc_cpumask_var(&vcpu->arch.wbinvd_dirty_mask, GFP_KERNEL)) > goto fail_free_mce_banks; > > + r = fx_init(vcpu); > + if (r) > + goto fail_free_mce_banks; > + You need to free vcpu->arch.wbinvd_dirty_mask in case fx_init() fails. > kvm_async_pf_hash_reset(vcpu); > kvm_pmu_init(vcpu); > > -- > 1.7.11.7 -- Gleb. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html