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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=57.103.78.188; envelope-from=mohamed@unpredictable.fr; helo=outbound.st.icloud.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_MSPIKE_H2=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @unpredictable.fr) X-ZM-MESSAGEID: 1775356515027154100 Content-Type: text/plain; charset="utf-8" Unlike the implementation in QEMU 10.2, this one works. It's not optimal though as it doesn't use the Hyper-V support for this. Signed-off-by: Mohamed Mediouni --- target/i386/whpx/whpx-all.c | 108 ++++++++++++++++++++++++++++++++++-- 1 file changed, 104 insertions(+), 4 deletions(-) diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c index 5601cacd33..735ab920a6 100644 --- a/target/i386/whpx/whpx-all.c +++ b/target/i386/whpx/whpx-all.c @@ -2071,6 +2071,7 @@ int whpx_vcpu_run(CPUState *cpu) WHV_REGISTER_NAME reg_names[5]; UINT32 reg_count =3D 5; X86CPU *x86_cpu =3D X86_CPU(cpu); + X86CPUClass *xcc =3D X86_CPU_GET_CLASS(cpu); CPUX86State *env =3D &x86_cpu->env; =20 reg_names[0] =3D WHvX64RegisterRip; @@ -2083,7 +2084,15 @@ int whpx_vcpu_run(CPUState *cpu) vcpu->exit_ctx.VpContext.Rip + vcpu->exit_ctx.VpContext.InstructionLength; =20 - if (whpx_is_legacy_os()) { + /* + * On Windows 10 we can't query features from + * the Hyper-V interface. + * + * On Windows 11, if using xcc->max_features + * just pass through what the hypervisor + * provides without any QEMU filtering. + */ + if (whpx_is_legacy_os() || xcc->max_features) { reg_values[1].Reg64 =3D vcpu->exit_ctx.CpuidAccess.Default= ResultRax; reg_values[2].Reg64 =3D vcpu->exit_ctx.CpuidAccess.Default= ResultRcx; reg_values[3].Reg64 =3D vcpu->exit_ctx.CpuidAccess.Default= ResultRdx; @@ -2138,6 +2147,45 @@ int whpx_vcpu_run(CPUState *cpu) } break; } + } else { + switch (vcpu->exit_ctx.CpuidAccess.Rax) { + case 0x40000000: + case 0x40000001: + case 0x40000010: + reg_values[1].Reg64 =3D vcpu->exit_ctx.CpuidAccess.Def= aultResultRax; + reg_values[2].Reg64 =3D vcpu->exit_ctx.CpuidAccess.Def= aultResultRcx; + reg_values[3].Reg64 =3D vcpu->exit_ctx.CpuidAccess.Def= aultResultRdx; + reg_values[4].Reg64 =3D vcpu->exit_ctx.CpuidAccess.Def= aultResultRbx; + break; + } + } + + /* Dynamic depending on XCR0 and XSS, so query DefaultResult */ + if (vcpu->exit_ctx.CpuidAccess.Rax =3D=3D 0x07 + && vcpu->exit_ctx.CpuidAccess.Rcx =3D=3D 0) { + if (vcpu->exit_ctx.CpuidAccess.DefaultResultRdx + & CPUID_7_0_EDX_CET_IBT) { + reg_values[3].Reg32 |=3D CPUID_7_0_EDX_CET_IBT; + } else { + reg_values[3].Reg32 &=3D ~CPUID_7_0_EDX_CET_IBT; + } + + if (vcpu->exit_ctx.CpuidAccess.DefaultResultRcx + & CPUID_7_0_ECX_CET_SHSTK) { + reg_values[2].Reg32 |=3D CPUID_7_0_ECX_CET_SHSTK; + } else { + reg_values[2].Reg32 &=3D ~CPUID_7_0_ECX_CET_SHSTK; + } + } + + /* OSXSAVE is dynamic. Do this instead of syncing CR4 */ + if (vcpu->exit_ctx.CpuidAccess.Rax =3D=3D 1) { + if (vcpu->exit_ctx.CpuidAccess.DefaultResultRcx + & CPUID_EXT_OSXSAVE) { + reg_values[2].Reg32 |=3D CPUID_EXT_OSXSAVE; + } else { + reg_values[2].Reg32 &=3D ~CPUID_EXT_OSXSAVE; + } } =20 hr =3D whp_dispatch.WHvSetVirtualProcessorRegisters( @@ -2327,6 +2375,45 @@ error: return ret; } =20 +static void whpx_cpu_xsave_init(void) +{ + static bool first =3D true; + int i; + + if (!first) { + return; + } + first =3D false; + + /* x87 and SSE states are in the legacy region of the XSAVE area. */ + x86_ext_save_areas[XSTATE_FP_BIT].offset =3D 0; + x86_ext_save_areas[XSTATE_SSE_BIT].offset =3D 0; + + for (i =3D XSTATE_SSE_BIT + 1; i < XSAVE_STATE_AREA_COUNT; i++) { + ExtSaveArea *esa =3D &x86_ext_save_areas[i]; + + if (esa->size) { + int sz =3D whpx_get_supported_cpuid(0xd, i, R_EAX); + if (sz !=3D 0) { + assert(esa->size =3D=3D sz); + esa->offset =3D whpx_get_supported_cpuid(0xd, i, R_EBX); + } + } + } +} + +static void whpx_cpu_max_instance_init(X86CPU *cpu) +{ + CPUX86State *env =3D &cpu->env; + + env->cpuid_min_level =3D + whpx_get_supported_cpuid(0x0, 0, R_EAX); + env->cpuid_min_xlevel =3D + whpx_get_supported_cpuid(0x80000000, 0, R_EAX); + env->cpuid_min_xlevel2 =3D + whpx_get_supported_cpuid(0xC0000000, 0, R_EAX); +} + static PropValue whpx_default_props[] =3D { { "x2apic", "on" }, { NULL, NULL }, @@ -2336,9 +2423,18 @@ static PropValue whpx_default_props[] =3D { void whpx_cpu_instance_init(CPUState *cs) { X86CPU *cpu =3D X86_CPU(cs); + X86CPUClass *xcc =3D X86_CPU_GET_CLASS(cpu); =20 host_cpu_instance_init(cpu); x86_cpu_apply_props(cpu, whpx_default_props); + + if (!whpx_is_legacy_os() && xcc->max_features) { + whpx_cpu_max_instance_init(cpu); + } + + if (!whpx_is_legacy_os()) { + whpx_cpu_xsave_init(); + } } =20 /* @@ -2356,8 +2452,12 @@ int whpx_accel_init(AccelState *as, MachineState *ms) WHV_CAPABILITY_FEATURES features =3D {0}; WHV_PROCESSOR_FEATURES_BANKS processor_features; WHV_PROCESSOR_PERFMON_FEATURES perfmon_features; - UINT32 cpuidExitList[] =3D {1}; - UINT32 cpuidExitList_nohyperv[] =3D {1, 0x40000000, 0x40000001, 0x4000= 0010}; + + UINT32 cpuidExitList[] =3D {0x0, 0x1, 0x6, 0x7, 0x14, 0x24, 0x29, 0x1E, + 0x40000000, 0x40000001, 0x40000010, 0x80000000, 0x80000001, + 0x80000002, 0x80000003, 0x80000004, 0x80000007, 0x80000008, + 0x8000000A, 0x80000021, 0x80000022, 0xC0000000, 0xC0000001}; + UINT32 cpuidExitList_legacy_os[] =3D {1, 0x40000000, 0x40000001, 0x400= 00010}; =20 whpx =3D &whpx_global; =20 @@ -2613,7 +2713,7 @@ int whpx_accel_init(AccelState *as, MachineState *ms) hr =3D whp_dispatch.WHvSetPartitionProperty( whpx->partition, WHvPartitionPropertyCodeCpuidExitList, - whpx->hyperv_enlightenments_enabled ? cpuidExitList : cpuidExitLis= t_nohyperv, + !whpx_is_legacy_os() ? cpuidExitList : cpuidExitList_legacy_os, RTL_NUMBER_OF(cpuidExitList) * sizeof(UINT32)); =20 if (FAILED(hr)) { --=20 2.50.1 (Apple Git-155)