Re: [PATCH v2 4/8] KVM: x86: do not go through ctxt->ops when emulating rsm

From: Maxim Levitsky
Date: Mon Oct 24 2022 - 15:31:19 EST

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On Thu, 2022-09-29 at 13:20 -0400, Paolo Bonzini wrote:
> Now that RSM is implemented in a single emulator callback, there is no
> point in going through other callbacks for the sake of modifying
> processor state. Just invoke KVM's own internal functions directly,
> and remove the callbacks that were only used by em_rsm; the only
> substantial difference is in the handling of the segment registers
> and descriptor cache, which have to be parsed into a struct kvm_segment
> instead of a struct desc_struct.
>
> This also fixes a bug where emulator_set_segment was shifting the
> limit left by 12 if the G bit is set, but the limit had not been
> shifted right upon entry to SMM.
>
> The emulator context is still used to restore EIP and the general
> purpose registers.
>
> Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> ---
> arch/x86/kvm/kvm_emulate.h | 13 ---
> arch/x86/kvm/smm.c | 177 +++++++++++++++++--------------------
> arch/x86/kvm/x86.c | 33 -------
> 3 files changed, 81 insertions(+), 142 deletions(-)
>
> diff --git a/arch/x86/kvm/kvm_emulate.h b/arch/x86/kvm/kvm_emulate.h
> index d7afbc448dd2..84b1f2661463 100644
> --- a/arch/x86/kvm/kvm_emulate.h
> +++ b/arch/x86/kvm/kvm_emulate.h
> @@ -116,16 +116,6 @@ struct x86_emulate_ops {
> unsigned int bytes,
> struct x86_exception *fault, bool system);
>
> - /*
> - * read_phys: Read bytes of standard (non-emulated/special) memory.
> - * Used for descriptor reading.
> - * @addr: [IN ] Physical address from which to read.
> - * @val: [OUT] Value read from memory.
> - * @bytes: [IN ] Number of bytes to read from memory.
> - */
> - int (*read_phys)(struct x86_emulate_ctxt *ctxt, unsigned long addr,
> - void *val, unsigned int bytes);
> -
> /*
> * write_std: Write bytes of standard (non-emulated/special) memory.
> * Used for descriptor writing.
> @@ -209,11 +199,8 @@ struct x86_emulate_ops {
> int (*cpl)(struct x86_emulate_ctxt *ctxt);
> void (*get_dr)(struct x86_emulate_ctxt *ctxt, int dr, ulong *dest);
> int (*set_dr)(struct x86_emulate_ctxt *ctxt, int dr, ulong value);
> - u64 (*get_smbase)(struct x86_emulate_ctxt *ctxt);
> - void (*set_smbase)(struct x86_emulate_ctxt *ctxt, u64 smbase);
> int (*set_msr_with_filter)(struct x86_emulate_ctxt *ctxt, u32 msr_index, u64 data);
> int (*get_msr_with_filter)(struct x86_emulate_ctxt *ctxt, u32 msr_index, u64 *pdata);
> - int (*set_msr)(struct x86_emulate_ctxt *ctxt, u32 msr_index, u64 data);
> int (*get_msr)(struct x86_emulate_ctxt *ctxt, u32 msr_index, u64 *pdata);
> int (*check_pmc)(struct x86_emulate_ctxt *ctxt, u32 pmc);
> int (*read_pmc)(struct x86_emulate_ctxt *ctxt, u32 pmc, u64 *pdata);
> diff --git a/arch/x86/kvm/smm.c b/arch/x86/kvm/smm.c
> index 773e07b6397d..41ca128478fc 100644
> --- a/arch/x86/kvm/smm.c
> +++ b/arch/x86/kvm/smm.c
> @@ -271,71 +271,59 @@ void enter_smm(struct kvm_vcpu *vcpu)
> kvm_mmu_reset_context(vcpu);
> }
>
> -static int emulator_has_longmode(struct x86_emulate_ctxt *ctxt)
> -{
> -#ifdef CONFIG_X86_64
> - return ctxt->ops->guest_has_long_mode(ctxt);
> -#else
> - return false;
> -#endif
> -}
> -
> -static void rsm_set_desc_flags(struct desc_struct *desc, u32 flags)
> +static void rsm_set_desc_flags(struct kvm_segment *desc, u32 flags)
> {
> desc->g = (flags >> 23) & 1;
> - desc->d = (flags >> 22) & 1;
> + desc->db = (flags >> 22) & 1;
> desc->l = (flags >> 21) & 1;
> desc->avl = (flags >> 20) & 1;
> - desc->p = (flags >> 15) & 1;
> + desc->present = (flags >> 15) & 1;
> desc->dpl = (flags >> 13) & 3;
> desc->s = (flags >> 12) & 1;
> desc->type = (flags >> 8) & 15;
> +
> + desc->unusable = !desc->present;
> + desc->padding = 0;
> }
>
> -static int rsm_load_seg_32(struct x86_emulate_ctxt *ctxt, const char *smstate,
> +static int rsm_load_seg_32(struct kvm_vcpu *vcpu, const char *smstate,
> int n)
> {
> - struct desc_struct desc;
> + struct kvm_segment desc;
> int offset;
> - u16 selector;
> -
> - selector = GET_SMSTATE(u32, smstate, 0x7fa8 + n * 4);
>
> if (n < 3)
> offset = 0x7f84 + n * 12;
> else
> offset = 0x7f2c + (n - 3) * 12;
>
> - set_desc_base(&desc, GET_SMSTATE(u32, smstate, offset + 8));
> - set_desc_limit(&desc, GET_SMSTATE(u32, smstate, offset + 4));
> + desc.selector = GET_SMSTATE(u32, smstate, 0x7fa8 + n * 4);
> + desc.base = GET_SMSTATE(u32, smstate, offset + 8);
> + desc.limit = GET_SMSTATE(u32, smstate, offset + 4);
> rsm_set_desc_flags(&desc, GET_SMSTATE(u32, smstate, offset));
> - ctxt->ops->set_segment(ctxt, selector, &desc, 0, n);
> + kvm_set_segment(vcpu, &desc, n);
> return X86EMUL_CONTINUE;
> }
>
> #ifdef CONFIG_X86_64
> -static int rsm_load_seg_64(struct x86_emulate_ctxt *ctxt, const char *smstate,
> +static int rsm_load_seg_64(struct kvm_vcpu *vcpu, const char *smstate,
> int n)
> {
> - struct desc_struct desc;
> + struct kvm_segment desc;
> int offset;
> - u16 selector;
> - u32 base3;
>
> offset = 0x7e00 + n * 16;
>
> - selector = GET_SMSTATE(u16, smstate, offset);
> + desc.selector = GET_SMSTATE(u16, smstate, offset);
> rsm_set_desc_flags(&desc, GET_SMSTATE(u16, smstate, offset + 2) << 8);
> - set_desc_limit(&desc, GET_SMSTATE(u32, smstate, offset + 4));
> - set_desc_base(&desc, GET_SMSTATE(u32, smstate, offset + 8));
> - base3 = GET_SMSTATE(u32, smstate, offset + 12);
> -
> - ctxt->ops->set_segment(ctxt, selector, &desc, base3, n);
> + desc.limit = GET_SMSTATE(u32, smstate, offset + 4);
> + desc.base = GET_SMSTATE(u64, smstate, offset + 8);
> + kvm_set_segment(vcpu, &desc, n);
> return X86EMUL_CONTINUE;
> }
> #endif
>
> -static int rsm_enter_protected_mode(struct x86_emulate_ctxt *ctxt,
> +static int rsm_enter_protected_mode(struct kvm_vcpu *vcpu,
> u64 cr0, u64 cr3, u64 cr4)
> {
> int bad;
> @@ -348,7 +336,7 @@ static int rsm_enter_protected_mode(struct x86_emulate_ctxt *ctxt,
> cr3 &= ~0xfff;
> }
>
> - bad = ctxt->ops->set_cr(ctxt, 3, cr3);
> + bad = kvm_set_cr3(vcpu, cr3);
> if (bad)
> return X86EMUL_UNHANDLEABLE;
>
> @@ -357,20 +345,20 @@ static int rsm_enter_protected_mode(struct x86_emulate_ctxt *ctxt,
> * Then enable protected mode. However, PCID cannot be enabled
> * if EFER.LMA=0, so set it separately.
> */
> - bad = ctxt->ops->set_cr(ctxt, 4, cr4 & ~X86_CR4_PCIDE);
> + bad = kvm_set_cr4(vcpu, cr4 & ~X86_CR4_PCIDE);
> if (bad)
> return X86EMUL_UNHANDLEABLE;
>
> - bad = ctxt->ops->set_cr(ctxt, 0, cr0);
> + bad = kvm_set_cr0(vcpu, cr0);
> if (bad)
> return X86EMUL_UNHANDLEABLE;
>
> if (cr4 & X86_CR4_PCIDE) {
> - bad = ctxt->ops->set_cr(ctxt, 4, cr4);
> + bad = kvm_set_cr4(vcpu, cr4);
> if (bad)
> return X86EMUL_UNHANDLEABLE;
> if (pcid) {
> - bad = ctxt->ops->set_cr(ctxt, 3, cr3 | pcid);
> + bad = kvm_set_cr3(vcpu, cr3 | pcid);
> if (bad)
> return X86EMUL_UNHANDLEABLE;
> }
> @@ -383,9 +371,9 @@ static int rsm_enter_protected_mode(struct x86_emulate_ctxt *ctxt,
> static int rsm_load_state_32(struct x86_emulate_ctxt *ctxt,
> const char *smstate)
> {
> - struct desc_struct desc;
> + struct kvm_vcpu *vcpu = ctxt->vcpu;
> + struct kvm_segment desc;
> struct desc_ptr dt;
> - u16 selector;
> u32 val, cr0, cr3, cr4;
> int i;
>
> @@ -399,56 +387,55 @@ static int rsm_load_state_32(struct x86_emulate_ctxt *ctxt,
>
> val = GET_SMSTATE(u32, smstate, 0x7fcc);
>
> - if (ctxt->ops->set_dr(ctxt, 6, val))
> + if (kvm_set_dr(vcpu, 6, val))
> return X86EMUL_UNHANDLEABLE;
>
> val = GET_SMSTATE(u32, smstate, 0x7fc8);
>
> - if (ctxt->ops->set_dr(ctxt, 7, val))
> + if (kvm_set_dr(vcpu, 7, val))
> return X86EMUL_UNHANDLEABLE;
>
> - selector = GET_SMSTATE(u32, smstate, 0x7fc4);
> - set_desc_base(&desc, GET_SMSTATE(u32, smstate, 0x7f64));
> - set_desc_limit(&desc, GET_SMSTATE(u32, smstate, 0x7f60));
> + desc.selector = GET_SMSTATE(u32, smstate, 0x7fc4);
> + desc.base = GET_SMSTATE(u32, smstate, 0x7f64);
> + desc.limit = GET_SMSTATE(u32, smstate, 0x7f60);
> rsm_set_desc_flags(&desc, GET_SMSTATE(u32, smstate, 0x7f5c));
> - ctxt->ops->set_segment(ctxt, selector, &desc, 0, VCPU_SREG_TR);
> + kvm_set_segment(vcpu, &desc, VCPU_SREG_TR);
>
> - selector = GET_SMSTATE(u32, smstate, 0x7fc0);
> - set_desc_base(&desc, GET_SMSTATE(u32, smstate, 0x7f80));
> - set_desc_limit(&desc, GET_SMSTATE(u32, smstate, 0x7f7c));
> + desc.selector = GET_SMSTATE(u32, smstate, 0x7fc0);
> + desc.base = GET_SMSTATE(u32, smstate, 0x7f80);
> + desc.limit = GET_SMSTATE(u32, smstate, 0x7f7c);
> rsm_set_desc_flags(&desc, GET_SMSTATE(u32, smstate, 0x7f78));
> - ctxt->ops->set_segment(ctxt, selector, &desc, 0, VCPU_SREG_LDTR);
> + kvm_set_segment(vcpu, &desc, VCPU_SREG_LDTR);
>
> dt.address = GET_SMSTATE(u32, smstate, 0x7f74);
> dt.size = GET_SMSTATE(u32, smstate, 0x7f70);
> - ctxt->ops->set_gdt(ctxt, &dt);
> + static_call(kvm_x86_set_gdt)(vcpu, &dt);
>
> dt.address = GET_SMSTATE(u32, smstate, 0x7f58);
> dt.size = GET_SMSTATE(u32, smstate, 0x7f54);
> - ctxt->ops->set_idt(ctxt, &dt);
> + static_call(kvm_x86_set_idt)(vcpu, &dt);
>
> for (i = 0; i < 6; i++) {
> - int r = rsm_load_seg_32(ctxt, smstate, i);
> + int r = rsm_load_seg_32(vcpu, smstate, i);
> if (r != X86EMUL_CONTINUE)
> return r;
> }
>
> cr4 = GET_SMSTATE(u32, smstate, 0x7f14);
>
> - ctxt->ops->set_smbase(ctxt, GET_SMSTATE(u32, smstate, 0x7ef8));
> + vcpu->arch.smbase = GET_SMSTATE(u32, smstate, 0x7ef8);
>
> - return rsm_enter_protected_mode(ctxt, cr0, cr3, cr4);
> + return rsm_enter_protected_mode(vcpu, cr0, cr3, cr4);
> }
>
> #ifdef CONFIG_X86_64
> static int rsm_load_state_64(struct x86_emulate_ctxt *ctxt,
> const char *smstate)
> {
> - struct desc_struct desc;
> + struct kvm_vcpu *vcpu = ctxt->vcpu;
> + struct kvm_segment desc;
> struct desc_ptr dt;
> u64 val, cr0, cr3, cr4;
> - u32 base3;
> - u16 selector;
> int i, r;
>
> for (i = 0; i < NR_EMULATOR_GPRS; i++)
> @@ -459,51 +446,49 @@ static int rsm_load_state_64(struct x86_emulate_ctxt *ctxt,
>
> val = GET_SMSTATE(u64, smstate, 0x7f68);
>
> - if (ctxt->ops->set_dr(ctxt, 6, val))
> + if (kvm_set_dr(vcpu, 6, val))
> return X86EMUL_UNHANDLEABLE;
>
> val = GET_SMSTATE(u64, smstate, 0x7f60);
>
> - if (ctxt->ops->set_dr(ctxt, 7, val))
> + if (kvm_set_dr(vcpu, 7, val))
> return X86EMUL_UNHANDLEABLE;
>
> cr0 = GET_SMSTATE(u64, smstate, 0x7f58);
> cr3 = GET_SMSTATE(u64, smstate, 0x7f50);
> cr4 = GET_SMSTATE(u64, smstate, 0x7f48);
> - ctxt->ops->set_smbase(ctxt, GET_SMSTATE(u32, smstate, 0x7f00));
> + vcpu->arch.smbase = GET_SMSTATE(u32, smstate, 0x7f00);
> val = GET_SMSTATE(u64, smstate, 0x7ed0);
>
> - if (ctxt->ops->set_msr(ctxt, MSR_EFER, val & ~EFER_LMA))
> + if (kvm_set_msr(vcpu, MSR_EFER, val & ~EFER_LMA))
> return X86EMUL_UNHANDLEABLE;
>
> - selector = GET_SMSTATE(u32, smstate, 0x7e90);
> + desc.selector = GET_SMSTATE(u32, smstate, 0x7e90);
> rsm_set_desc_flags(&desc, GET_SMSTATE(u32, smstate, 0x7e92) << 8);
> - set_desc_limit(&desc, GET_SMSTATE(u32, smstate, 0x7e94));
> - set_desc_base(&desc, GET_SMSTATE(u32, smstate, 0x7e98));
> - base3 = GET_SMSTATE(u32, smstate, 0x7e9c);
> - ctxt->ops->set_segment(ctxt, selector, &desc, base3, VCPU_SREG_TR);
> + desc.limit = GET_SMSTATE(u32, smstate, 0x7e94);
> + desc.base = GET_SMSTATE(u64, smstate, 0x7e98);
> + kvm_set_segment(vcpu, &desc, VCPU_SREG_TR);
>
> dt.size = GET_SMSTATE(u32, smstate, 0x7e84);
> dt.address = GET_SMSTATE(u64, smstate, 0x7e88);
> - ctxt->ops->set_idt(ctxt, &dt);
> + static_call(kvm_x86_set_idt)(vcpu, &dt);
>
> - selector = GET_SMSTATE(u32, smstate, 0x7e70);
> + desc.selector = GET_SMSTATE(u32, smstate, 0x7e70);
> rsm_set_desc_flags(&desc, GET_SMSTATE(u32, smstate, 0x7e72) << 8);
> - set_desc_limit(&desc, GET_SMSTATE(u32, smstate, 0x7e74));
> - set_desc_base(&desc, GET_SMSTATE(u32, smstate, 0x7e78));
> - base3 = GET_SMSTATE(u32, smstate, 0x7e7c);
> - ctxt->ops->set_segment(ctxt, selector, &desc, base3, VCPU_SREG_LDTR);
> + desc.limit = GET_SMSTATE(u32, smstate, 0x7e74);
> + desc.base = GET_SMSTATE(u64, smstate, 0x7e78);
> + kvm_set_segment(vcpu, &desc, VCPU_SREG_LDTR);
>
> dt.size = GET_SMSTATE(u32, smstate, 0x7e64);
> dt.address = GET_SMSTATE(u64, smstate, 0x7e68);
> - ctxt->ops->set_gdt(ctxt, &dt);
> + static_call(kvm_x86_set_gdt)(vcpu, &dt);
>
> - r = rsm_enter_protected_mode(ctxt, cr0, cr3, cr4);
> + r = rsm_enter_protected_mode(vcpu, cr0, cr3, cr4);
> if (r != X86EMUL_CONTINUE)
> return r;
>
> for (i = 0; i < 6; i++) {
> - r = rsm_load_seg_64(ctxt, smstate, i);
> + r = rsm_load_seg_64(vcpu, smstate, i);
> if (r != X86EMUL_CONTINUE)
> return r;
> }
> @@ -520,14 +505,14 @@ int emulator_leave_smm(struct x86_emulate_ctxt *ctxt)
> u64 smbase;
> int ret;
>
> - smbase = ctxt->ops->get_smbase(ctxt);
> + smbase = vcpu->arch.smbase;
>
> - ret = ctxt->ops->read_phys(ctxt, smbase + 0xfe00, buf, sizeof(buf));
> - if (ret != X86EMUL_CONTINUE)
> + ret = kvm_vcpu_read_guest(vcpu, smbase + 0xfe00, buf, sizeof(buf));
> + if (ret < 0)
> return X86EMUL_UNHANDLEABLE;
>
> - if ((ctxt->ops->get_hflags(ctxt) & X86EMUL_SMM_INSIDE_NMI_MASK) == 0)
> - ctxt->ops->set_nmi_mask(ctxt, false);
> + if ((vcpu->arch.hflags & HF_SMM_INSIDE_NMI_MASK) == 0)
> + static_call(kvm_x86_set_nmi_mask)(vcpu, false);
>
> kvm_smm_changed(vcpu, false);
>
> @@ -535,41 +520,41 @@ int emulator_leave_smm(struct x86_emulate_ctxt *ctxt)
> * Get back to real mode, to prepare a safe state in which to load
> * CR0/CR3/CR4/EFER. It's all a bit more complicated if the vCPU
> * supports long mode.
> - *
> - * The ctxt->ops callbacks will handle all side effects when writing
> - * writing MSRs and CRs, e.g. MMU context resets, CPUID
> - * runtime updates, etc.
> */
> - if (emulator_has_longmode(ctxt)) {
> - struct desc_struct cs_desc;
> +#ifdef CONFIG_X86_64
> + if (guest_cpuid_has(vcpu, X86_FEATURE_LM)) {
> + struct kvm_segment cs_desc;
>
> /* Zero CR4.PCIDE before CR0.PG. */
> - cr4 = ctxt->ops->get_cr(ctxt, 4);
> + cr4 = kvm_read_cr4(vcpu);
> if (cr4 & X86_CR4_PCIDE)
> - ctxt->ops->set_cr(ctxt, 4, cr4 & ~X86_CR4_PCIDE);
> + kvm_set_cr4(vcpu, cr4 & ~X86_CR4_PCIDE);
>
> /* A 32-bit code segment is required to clear EFER.LMA. */
> memset(&cs_desc, 0, sizeof(cs_desc));
> cs_desc.type = 0xb;
> - cs_desc.s = cs_desc.g = cs_desc.p = 1;
> - ctxt->ops->set_segment(ctxt, 0, &cs_desc, 0, VCPU_SREG_CS);
> + cs_desc.s = cs_desc.g = cs_desc.present = 1;
> + kvm_set_segment(vcpu, &cs_desc, VCPU_SREG_CS);
> }
> +#endif
>
> /* For the 64-bit case, this will clear EFER.LMA. */
> - cr0 = ctxt->ops->get_cr(ctxt, 0);
> + cr0 = kvm_read_cr0(vcpu);
> if (cr0 & X86_CR0_PE)
> - ctxt->ops->set_cr(ctxt, 0, cr0 & ~(X86_CR0_PG | X86_CR0_PE));
> + kvm_set_cr0(vcpu, cr0 & ~(X86_CR0_PG | X86_CR0_PE));
>
> - if (emulator_has_longmode(ctxt)) {
> +#ifdef CONFIG_X86_64
> + if (guest_cpuid_has(vcpu, X86_FEATURE_LM)) {
> /* Clear CR4.PAE before clearing EFER.LME. */
> - cr4 = ctxt->ops->get_cr(ctxt, 4);
> + cr4 = kvm_read_cr4(vcpu);
> if (cr4 & X86_CR4_PAE)
> - ctxt->ops->set_cr(ctxt, 4, cr4 & ~X86_CR4_PAE);
> + kvm_set_cr4(vcpu, cr4 & ~X86_CR4_PAE);
>
> /* And finally go back to 32-bit mode. */
> efer = 0;
> - ctxt->ops->set_msr(ctxt, MSR_EFER, efer);
> + kvm_set_msr(vcpu, MSR_EFER, efer);
> }
> +#endif
>
> /*
> * Give leave_smm() a chance to make ISA-specific changes to the vCPU
> @@ -580,7 +565,7 @@ int emulator_leave_smm(struct x86_emulate_ctxt *ctxt)
> return X86EMUL_UNHANDLEABLE;
>
> #ifdef CONFIG_X86_64
> - if (emulator_has_longmode(ctxt))
> + if (guest_cpuid_has(vcpu, X86_FEATURE_LM))
> return rsm_load_state_64(ctxt, buf);
> else
> #endif
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index 97d6ee179109..97a871635986 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -7201,15 +7201,6 @@ static int emulator_read_std(struct x86_emulate_ctxt *ctxt,
> return kvm_read_guest_virt_helper(addr, val, bytes, vcpu, access, exception);
> }
>
> -static int kvm_read_guest_phys_system(struct x86_emulate_ctxt *ctxt,
> - unsigned long addr, void *val, unsigned int bytes)
> -{
> - struct kvm_vcpu *vcpu = emul_to_vcpu(ctxt);
> - int r = kvm_vcpu_read_guest(vcpu, addr, val, bytes);
> -
> - return r < 0 ? X86EMUL_IO_NEEDED : X86EMUL_CONTINUE;
> -}
> -
> static int kvm_write_guest_virt_helper(gva_t addr, void *val, unsigned int bytes,
> struct kvm_vcpu *vcpu, u64 access,
> struct x86_exception *exception)
> @@ -8001,26 +7992,6 @@ static int emulator_get_msr(struct x86_emulate_ctxt *ctxt,
> return kvm_get_msr(emul_to_vcpu(ctxt), msr_index, pdata);
> }
>
> -static int emulator_set_msr(struct x86_emulate_ctxt *ctxt,
> - u32 msr_index, u64 data)
> -{
> - return kvm_set_msr(emul_to_vcpu(ctxt), msr_index, data);
> -}
> -
> -static u64 emulator_get_smbase(struct x86_emulate_ctxt *ctxt)
> -{
> - struct kvm_vcpu *vcpu = emul_to_vcpu(ctxt);
> -
> - return vcpu->arch.smbase;
> -}
> -
> -static void emulator_set_smbase(struct x86_emulate_ctxt *ctxt, u64 smbase)
> -{
> - struct kvm_vcpu *vcpu = emul_to_vcpu(ctxt);
> -
> - vcpu->arch.smbase = smbase;
> -}
> -
> static int emulator_check_pmc(struct x86_emulate_ctxt *ctxt,
> u32 pmc)
> {
> @@ -8119,7 +8090,6 @@ static const struct x86_emulate_ops emulate_ops = {
> .write_gpr = emulator_write_gpr,
> .read_std = emulator_read_std,
> .write_std = emulator_write_std,
> - .read_phys = kvm_read_guest_phys_system,
> .fetch = kvm_fetch_guest_virt,
> .read_emulated = emulator_read_emulated,
> .write_emulated = emulator_write_emulated,
> @@ -8139,11 +8109,8 @@ static const struct x86_emulate_ops emulate_ops = {
> .cpl = emulator_get_cpl,
> .get_dr = emulator_get_dr,
> .set_dr = emulator_set_dr,
> - .get_smbase = emulator_get_smbase,
> - .set_smbase = emulator_set_smbase,
> .set_msr_with_filter = emulator_set_msr_with_filter,
> .get_msr_with_filter = emulator_get_msr_with_filter,
> - .set_msr = emulator_set_msr,
> .get_msr = emulator_get_msr,
> .check_pmc = emulator_check_pmc,
> .read_pmc = emulator_read_pmc,

Reviewed-by: Maxim Levitsky <mlevitsk@xxxxxxxxxx>

Best regards,
Maxim Levitsky

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