[v2,6/9] target/i386: Use MMU_NESTED_IDX for vmload/vmsave

Message ID	20221002172956.265735-7-richard.henderson@linaro.org
State	Superseded
Headers	show Delivered-To: patch@linaro.org Received-SPF: pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; From: Richard Henderson <richard.henderson@linaro.org> To: qemu-devel@nongnu.org Cc: pbonzini@redhat.com Subject: [PATCH v2 6/9] target/i386: Use MMU_NESTED_IDX for vmload/vmsave Date: Sun, 2 Oct 2022 10:29:53 -0700 Message-Id: <20221002172956.265735-7-richard.henderson@linaro.org> In-Reply-To: <20221002172956.265735-1-richard.henderson@linaro.org> References: <20221002172956.265735-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::102d; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102d.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action Precedence: list Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" <qemu-devel-bounces+patch=linaro.org@nongnu.org>
Series	target/i386: Use atomic operations for pte updates \| expand [v2,0/9] target/i386: Use atomic operations for pte updates [v2,1/9] target/i386: Use MMUAccessType across excp_helper.c [v2,2/9] target/i386: Direct call get_hphys from mmu_translate [v2,3/9] target/i386: Introduce structures for mmu_translate [v2,4/9] target/i386: Reorg GET_HPHYS [v2,5/9] target/i386: Add MMU_PHYS_IDX and MMU_NESTED_IDX [v2,6/9] target/i386: Use MMU_NESTED_IDX for vmload/vmsave [v2,7/9] target/i386: Combine 5 sets of variables in mmu_translate [v2,8/9] target/i386: Use atomic operations for pte updates [v2,9/9] target/i386: Use probe_access_full for final stage2 translation

diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 9a40b54ae5..10a5e79774 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -2381,8 +2381,6 @@ static inline bool ctl_has_irq(CPUX86State *env) return (env->int_ctl & V_IRQ_MASK) && (int_prio >= tpr); } -hwaddr get_hphys(CPUState *cs, hwaddr gphys, MMUAccessType access_type, - int *prot); #if defined(TARGET_X86_64) && \ defined(CONFIG_USER_ONLY) && \ defined(CONFIG_LINUX) diff --git a/target/i386/tcg/sysemu/excp_helper.c b/target/i386/tcg/sysemu/excp_helper.c index 494dc6d00c..86b3014196 100644 --- a/target/i386/tcg/sysemu/excp_helper.c +++ b/target/i386/tcg/sysemu/excp_helper.c @@ -413,37 +413,6 @@ static G_NORETURN void raise_stage2(CPUX86State *env, TranslateFault *err, cpu_vmexit(env, SVM_EXIT_NPF, exit_info_1, retaddr); } -hwaddr get_hphys(CPUState *cs, hwaddr gphys, MMUAccessType access_type, - int *prot) -{ - CPUX86State *env = cs->env_ptr; - - if (likely(!(env->hflags2 & HF2_NPT_MASK))) { - return gphys; - } else { - TranslateParams in = { - .addr = gphys, - .cr3 = env->nested_cr3, - .pg_mode = env->nested_pg_mode, - .mmu_idx = MMU_USER_IDX, - .access_type = access_type, - .use_stage2 = false, - }; - TranslateResult out; - TranslateFault err; - - if (!mmu_translate(env, &in, &out, &err)) { - err.stage2 = prot ? SVM_NPTEXIT_GPA : SVM_NPTEXIT_GPT; - raise_stage2(env, &err, env->retaddr); - } - - if (prot) { - *prot &= out.prot; - } - return out.paddr; - } -} - static bool get_physical_address(CPUX86State *env, vaddr addr, MMUAccessType access_type, int mmu_idx, TranslateResult *out, TranslateFault *err) diff --git a/target/i386/tcg/sysemu/svm_helper.c b/target/i386/tcg/sysemu/svm_helper.c index 85b7741d94..8e88567399 100644 --- a/target/i386/tcg/sysemu/svm_helper.c +++ b/target/i386/tcg/sysemu/svm_helper.c @@ -27,19 +27,19 @@ /* Secure Virtual Machine helpers */ -static inline void svm_save_seg(CPUX86State *env, hwaddr addr, - const SegmentCache *sc) +static void svm_save_seg(CPUX86State *env, int mmu_idx, hwaddr addr, + const SegmentCache *sc) { - CPUState *cs = env_cpu(env); - - x86_stw_phys(cs, addr + offsetof(struct vmcb_seg, selector), - sc->selector); - x86_stq_phys(cs, addr + offsetof(struct vmcb_seg, base), - sc->base); - x86_stl_phys(cs, addr + offsetof(struct vmcb_seg, limit), - sc->limit); - x86_stw_phys(cs, addr + offsetof(struct vmcb_seg, attrib), - ((sc->flags >> 8) & 0xff) | ((sc->flags >> 12) & 0x0f00)); + cpu_stw_mmuidx_ra(env, addr + offsetof(struct vmcb_seg, selector), + sc->selector, mmu_idx, 0); + cpu_stq_mmuidx_ra(env, addr + offsetof(struct vmcb_seg, base), + sc->base, mmu_idx, 0); + cpu_stl_mmuidx_ra(env, addr + offsetof(struct vmcb_seg, limit), + sc->limit, mmu_idx, 0); + cpu_stw_mmuidx_ra(env, addr + offsetof(struct vmcb_seg, attrib), + ((sc->flags >> 8) & 0xff) + | ((sc->flags >> 12) & 0x0f00), + mmu_idx, 0); } /* @@ -52,29 +52,36 @@ static inline void svm_canonicalization(CPUX86State *env, target_ulong *seg_base *seg_base = ((((long) *seg_base) << shift_amt) >> shift_amt); } -static inline void svm_load_seg(CPUX86State *env, hwaddr addr, - SegmentCache *sc) +static void svm_load_seg(CPUX86State *env, int mmu_idx, hwaddr addr, + SegmentCache *sc) { - CPUState *cs = env_cpu(env); unsigned int flags; - sc->selector = x86_lduw_phys(cs, - addr + offsetof(struct vmcb_seg, selector)); - sc->base = x86_ldq_phys(cs, addr + offsetof(struct vmcb_seg, base)); - sc->limit = x86_ldl_phys(cs, addr + offsetof(struct vmcb_seg, limit)); - flags = x86_lduw_phys(cs, addr + offsetof(struct vmcb_seg, attrib)); + sc->selector = + cpu_lduw_mmuidx_ra(env, addr + offsetof(struct vmcb_seg, selector), + mmu_idx, 0); + sc->base = + cpu_ldq_mmuidx_ra(env, addr + offsetof(struct vmcb_seg, base), + mmu_idx, 0); + sc->limit = + cpu_ldl_mmuidx_ra(env, addr + offsetof(struct vmcb_seg, limit), + mmu_idx, 0); + flags = + cpu_lduw_mmuidx_ra(env, addr + offsetof(struct vmcb_seg, attrib), + mmu_idx, 0); sc->flags = ((flags & 0xff) << 8) | ((flags & 0x0f00) << 12); + svm_canonicalization(env, &sc->base); } -static inline void svm_load_seg_cache(CPUX86State *env, hwaddr addr, - int seg_reg) +static void svm_load_seg_cache(CPUX86State *env, int mmu_idx, + hwaddr addr, int seg_reg) { - SegmentCache sc1, *sc = &sc1; + SegmentCache sc; - svm_load_seg(env, addr, sc); - cpu_x86_load_seg_cache(env, seg_reg, sc->selector, - sc->base, sc->limit, sc->flags); + svm_load_seg(env, mmu_idx, addr, &sc); + cpu_x86_load_seg_cache(env, seg_reg, sc.selector, + sc.base, sc.limit, sc.flags); } static inline bool is_efer_invalid_state (CPUX86State *env) @@ -199,13 +206,17 @@ void helper_vmrun(CPUX86State *env, int aflag, int next_eip_addend) env->vm_hsave + offsetof(struct vmcb, save.rflags), cpu_compute_eflags(env)); - svm_save_seg(env, env->vm_hsave + offsetof(struct vmcb, save.es), + svm_save_seg(env, MMU_PHYS_IDX, + env->vm_hsave + offsetof(struct vmcb, save.es), &env->segs[R_ES]); - svm_save_seg(env, env->vm_hsave + offsetof(struct vmcb, save.cs), + svm_save_seg(env, MMU_PHYS_IDX, + env->vm_hsave + offsetof(struct vmcb, save.cs), &env->segs[R_CS]); - svm_save_seg(env, env->vm_hsave + offsetof(struct vmcb, save.ss), + svm_save_seg(env, MMU_PHYS_IDX, + env->vm_hsave + offsetof(struct vmcb, save.ss), &env->segs[R_SS]); - svm_save_seg(env, env->vm_hsave + offsetof(struct vmcb, save.ds), + svm_save_seg(env, MMU_PHYS_IDX, + env->vm_hsave + offsetof(struct vmcb, save.ds), &env->segs[R_DS]); x86_stq_phys(cs, env->vm_hsave + offsetof(struct vmcb, save.rip), @@ -325,18 +336,18 @@ void helper_vmrun(CPUX86State *env, int aflag, int next_eip_addend) save.rflags)), ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK)); - svm_load_seg_cache(env, env->vm_vmcb + offsetof(struct vmcb, save.es), - R_ES); - svm_load_seg_cache(env, env->vm_vmcb + offsetof(struct vmcb, save.cs), - R_CS); - svm_load_seg_cache(env, env->vm_vmcb + offsetof(struct vmcb, save.ss), - R_SS); - svm_load_seg_cache(env, env->vm_vmcb + offsetof(struct vmcb, save.ds), - R_DS); - svm_load_seg(env, env->vm_vmcb + offsetof(struct vmcb, save.idtr), - &env->idt); - svm_load_seg(env, env->vm_vmcb + offsetof(struct vmcb, save.gdtr), - &env->gdt); + svm_load_seg_cache(env, MMU_PHYS_IDX, + env->vm_vmcb + offsetof(struct vmcb, save.es), R_ES); + svm_load_seg_cache(env, MMU_PHYS_IDX, + env->vm_vmcb + offsetof(struct vmcb, save.cs), R_CS); + svm_load_seg_cache(env, MMU_PHYS_IDX, + env->vm_vmcb + offsetof(struct vmcb, save.ss), R_SS); + svm_load_seg_cache(env, MMU_PHYS_IDX, + env->vm_vmcb + offsetof(struct vmcb, save.ds), R_DS); + svm_load_seg(env, MMU_PHYS_IDX, + env->vm_vmcb + offsetof(struct vmcb, save.idtr), &env->idt); + svm_load_seg(env, MMU_PHYS_IDX, + env->vm_vmcb + offsetof(struct vmcb, save.gdtr), &env->gdt); env->eip = x86_ldq_phys(cs, env->vm_vmcb + offsetof(struct vmcb, save.rip)); @@ -451,9 +462,8 @@ void helper_vmmcall(CPUX86State *env) void helper_vmload(CPUX86State *env, int aflag) { - CPUState *cs = env_cpu(env); + int mmu_idx = MMU_PHYS_IDX; target_ulong addr; - int prot; cpu_svm_check_intercept_param(env, SVM_EXIT_VMLOAD, 0, GETPC()); @@ -464,43 +474,52 @@ void helper_vmload(CPUX86State *env, int aflag) } if (virtual_vm_load_save_enabled(env, SVM_EXIT_VMLOAD, GETPC())) { - addr = get_hphys(cs, addr, MMU_DATA_LOAD, &prot); + mmu_idx = MMU_NESTED_IDX; } - qemu_log_mask(CPU_LOG_TB_IN_ASM, "vmload! " TARGET_FMT_lx - "\nFS: %016" PRIx64 " | " TARGET_FMT_lx "\n", - addr, x86_ldq_phys(cs, addr + offsetof(struct vmcb, - save.fs.base)), - env->segs[R_FS].base); - - svm_load_seg_cache(env, addr + offsetof(struct vmcb, save.fs), R_FS); - svm_load_seg_cache(env, addr + offsetof(struct vmcb, save.gs), R_GS); - svm_load_seg(env, addr + offsetof(struct vmcb, save.tr), &env->tr); - svm_load_seg(env, addr + offsetof(struct vmcb, save.ldtr), &env->ldt); + svm_load_seg_cache(env, mmu_idx, + addr + offsetof(struct vmcb, save.fs), R_FS); + svm_load_seg_cache(env, mmu_idx, + addr + offsetof(struct vmcb, save.gs), R_GS); + svm_load_seg(env, mmu_idx, + addr + offsetof(struct vmcb, save.tr), &env->tr); + svm_load_seg(env, mmu_idx, + addr + offsetof(struct vmcb, save.ldtr), &env->ldt); #ifdef TARGET_X86_64 - env->kernelgsbase = x86_ldq_phys(cs, addr + offsetof(struct vmcb, - save.kernel_gs_base)); - env->lstar = x86_ldq_phys(cs, addr + offsetof(struct vmcb, save.lstar)); - env->cstar = x86_ldq_phys(cs, addr + offsetof(struct vmcb, save.cstar)); - env->fmask = x86_ldq_phys(cs, addr + offsetof(struct vmcb, save.sfmask)); + env->kernelgsbase = + cpu_ldq_mmuidx_ra(env, + addr + offsetof(struct vmcb, save.kernel_gs_base), + mmu_idx, 0); + env->lstar = + cpu_ldq_mmuidx_ra(env, addr + offsetof(struct vmcb, save.lstar), + mmu_idx, 0); + env->cstar = + cpu_ldq_mmuidx_ra(env, addr + offsetof(struct vmcb, save.cstar), + mmu_idx, 0); + env->fmask = + cpu_ldq_mmuidx_ra(env, addr + offsetof(struct vmcb, save.sfmask), + mmu_idx, 0); svm_canonicalization(env, &env->kernelgsbase); #endif - env->star = x86_ldq_phys(cs, addr + offsetof(struct vmcb, save.star)); - env->sysenter_cs = x86_ldq_phys(cs, - addr + offsetof(struct vmcb, save.sysenter_cs)); - env->sysenter_esp = x86_ldq_phys(cs, addr + offsetof(struct vmcb, - save.sysenter_esp)); - env->sysenter_eip = x86_ldq_phys(cs, addr + offsetof(struct vmcb, - save.sysenter_eip)); - + env->star = + cpu_ldq_mmuidx_ra(env, addr + offsetof(struct vmcb, save.star), + mmu_idx, 0); + env->sysenter_cs = + cpu_ldq_mmuidx_ra(env, addr + offsetof(struct vmcb, save.sysenter_cs), + mmu_idx, 0); + env->sysenter_esp = + cpu_ldq_mmuidx_ra(env, addr + offsetof(struct vmcb, save.sysenter_esp), + mmu_idx, 0); + env->sysenter_eip = + cpu_ldq_mmuidx_ra(env, addr + offsetof(struct vmcb, save.sysenter_eip), + mmu_idx, 0); } void helper_vmsave(CPUX86State *env, int aflag) { - CPUState *cs = env_cpu(env); + int mmu_idx = MMU_PHYS_IDX; target_ulong addr; - int prot; cpu_svm_check_intercept_param(env, SVM_EXIT_VMSAVE, 0, GETPC()); @@ -511,38 +530,36 @@ void helper_vmsave(CPUX86State *env, int aflag) } if (virtual_vm_load_save_enabled(env, SVM_EXIT_VMSAVE, GETPC())) { - addr = get_hphys(cs, addr, MMU_DATA_STORE, &prot); + mmu_idx = MMU_NESTED_IDX; } - qemu_log_mask(CPU_LOG_TB_IN_ASM, "vmsave! " TARGET_FMT_lx - "\nFS: %016" PRIx64 " | " TARGET_FMT_lx "\n", - addr, x86_ldq_phys(cs, - addr + offsetof(struct vmcb, save.fs.base)), - env->segs[R_FS].base); - - svm_save_seg(env, addr + offsetof(struct vmcb, save.fs), + svm_save_seg(env, mmu_idx, addr + offsetof(struct vmcb, save.fs), &env->segs[R_FS]); - svm_save_seg(env, addr + offsetof(struct vmcb, save.gs), + svm_save_seg(env, mmu_idx, addr + offsetof(struct vmcb, save.gs), &env->segs[R_GS]); - svm_save_seg(env, addr + offsetof(struct vmcb, save.tr), + svm_save_seg(env, mmu_idx, addr + offsetof(struct vmcb, save.tr), &env->tr); - svm_save_seg(env, addr + offsetof(struct vmcb, save.ldtr), + svm_save_seg(env, mmu_idx, addr + offsetof(struct vmcb, save.ldtr), &env->ldt); #ifdef TARGET_X86_64 - x86_stq_phys(cs, addr + offsetof(struct vmcb, save.kernel_gs_base), - env->kernelgsbase); - x86_stq_phys(cs, addr + offsetof(struct vmcb, save.lstar), env->lstar); - x86_stq_phys(cs, addr + offsetof(struct vmcb, save.cstar), env->cstar); - x86_stq_phys(cs, addr + offsetof(struct vmcb, save.sfmask), env->fmask); + cpu_stq_mmuidx_ra(env, addr + offsetof(struct vmcb, save.kernel_gs_base), + env->kernelgsbase, mmu_idx, 0); + cpu_stq_mmuidx_ra(env, addr + offsetof(struct vmcb, save.lstar), + env->lstar, mmu_idx, 0); + cpu_stq_mmuidx_ra(env, addr + offsetof(struct vmcb, save.cstar), + env->cstar, mmu_idx, 0); + cpu_stq_mmuidx_ra(env, addr + offsetof(struct vmcb, save.sfmask), + env->fmask, mmu_idx, 0); #endif - x86_stq_phys(cs, addr + offsetof(struct vmcb, save.star), env->star); - x86_stq_phys(cs, - addr + offsetof(struct vmcb, save.sysenter_cs), env->sysenter_cs); - x86_stq_phys(cs, addr + offsetof(struct vmcb, save.sysenter_esp), - env->sysenter_esp); - x86_stq_phys(cs, addr + offsetof(struct vmcb, save.sysenter_eip), - env->sysenter_eip); + cpu_stq_mmuidx_ra(env, addr + offsetof(struct vmcb, save.star), + env->star, mmu_idx, 0); + cpu_stq_mmuidx_ra(env, addr + offsetof(struct vmcb, save.sysenter_cs), + env->sysenter_cs, mmu_idx, 0); + cpu_stq_mmuidx_ra(env, addr + offsetof(struct vmcb, save.sysenter_esp), + env->sysenter_esp, mmu_idx, 0); + cpu_stq_mmuidx_ra(env, addr + offsetof(struct vmcb, save.sysenter_eip), + env->sysenter_eip, mmu_idx, 0); } void helper_stgi(CPUX86State *env) @@ -725,13 +742,17 @@ void do_vmexit(CPUX86State *env) tlb_flush_by_mmuidx(cs, 1 << MMU_NESTED_IDX); /* Save the VM state in the vmcb */ - svm_save_seg(env, env->vm_vmcb + offsetof(struct vmcb, save.es), + svm_save_seg(env, MMU_PHYS_IDX, + env->vm_vmcb + offsetof(struct vmcb, save.es), &env->segs[R_ES]); - svm_save_seg(env, env->vm_vmcb + offsetof(struct vmcb, save.cs), + svm_save_seg(env, MMU_PHYS_IDX, + env->vm_vmcb + offsetof(struct vmcb, save.cs), &env->segs[R_CS]); - svm_save_seg(env, env->vm_vmcb + offsetof(struct vmcb, save.ss), + svm_save_seg(env, MMU_PHYS_IDX, + env->vm_vmcb + offsetof(struct vmcb, save.ss), &env->segs[R_SS]); - svm_save_seg(env, env->vm_vmcb + offsetof(struct vmcb, save.ds), + svm_save_seg(env, MMU_PHYS_IDX, + env->vm_vmcb + offsetof(struct vmcb, save.ds), &env->segs[R_DS]); x86_stq_phys(cs, env->vm_vmcb + offsetof(struct vmcb, save.gdtr.base), @@ -812,14 +833,14 @@ void do_vmexit(CPUX86State *env) ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK | VM_MASK)); - svm_load_seg_cache(env, env->vm_hsave + offsetof(struct vmcb, save.es), - R_ES); - svm_load_seg_cache(env, env->vm_hsave + offsetof(struct vmcb, save.cs), - R_CS); - svm_load_seg_cache(env, env->vm_hsave + offsetof(struct vmcb, save.ss), - R_SS); - svm_load_seg_cache(env, env->vm_hsave + offsetof(struct vmcb, save.ds), - R_DS); + svm_load_seg_cache(env, MMU_PHYS_IDX, + env->vm_hsave + offsetof(struct vmcb, save.es), R_ES); + svm_load_seg_cache(env, MMU_PHYS_IDX, + env->vm_hsave + offsetof(struct vmcb, save.cs), R_CS); + svm_load_seg_cache(env, MMU_PHYS_IDX, + env->vm_hsave + offsetof(struct vmcb, save.ss), R_SS); + svm_load_seg_cache(env, MMU_PHYS_IDX, + env->vm_hsave + offsetof(struct vmcb, save.ds), R_DS); env->eip = x86_ldq_phys(cs, env->vm_hsave + offsetof(struct vmcb, save.rip));

[v2,6/9] target/i386: Use MMU_NESTED_IDX for vmload/vmsave

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