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Sat, 20 Jul 2024 02:31:14 -0700 (PDT) From: Akihiko Odaki Date: Sat, 20 Jul 2024 18:30:49 +0900 Subject: [PATCH v4 1/6] target/arm/kvm: Set PMU for host only when available MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240720-pmu-v4-1-2a2b28f6b08f@daynix.com> References: <20240720-pmu-v4-0-2a2b28f6b08f@daynix.com> In-Reply-To: <20240720-pmu-v4-0-2a2b28f6b08f@daynix.com> To: Peter Maydell , Thomas Huth , Laurent Vivier , Paolo Bonzini , Cornelia Huck Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org, kvm@vger.kernel.org, Akihiko Odaki X-Mailer: b4 0.14-dev-fd6e3 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=2607:f8b0:4864:20::102e; envelope-from=akihiko.odaki@daynix.com; helo=mail-pj1-x102e.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=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: 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 @daynix-com.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1721468000801116600 target/arm/kvm.c checked PMU availability but unconditionally set the PMU feature flag for the host CPU model, which is confusing. Set the feature flag only when available. Signed-off-by: Akihiko Odaki --- target/arm/kvm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/arm/kvm.c b/target/arm/kvm.c index 70f79eda33cd..b20a35052f41 100644 --- a/target/arm/kvm.c +++ b/target/arm/kvm.c @@ -280,6 +280,7 @@ static bool kvm_arm_get_host_cpu_features(ARMHostCPUFea= tures *ahcf) if (kvm_arm_pmu_supported()) { init.features[0] |=3D 1 << KVM_ARM_VCPU_PMU_V3; pmu_supported =3D true; + features |=3D 1ULL << ARM_FEATURE_PMU; } =20 if (!kvm_arm_create_scratch_host_vcpu(cpus_to_try, fdarray, &init)) { @@ -448,7 +449,6 @@ static bool kvm_arm_get_host_cpu_features(ARMHostCPUFea= tures *ahcf) features |=3D 1ULL << ARM_FEATURE_V8; features |=3D 1ULL << ARM_FEATURE_NEON; features |=3D 1ULL << ARM_FEATURE_AARCH64; - features |=3D 1ULL << ARM_FEATURE_PMU; features |=3D 1ULL << ARM_FEATURE_GENERIC_TIMER; =20 ahcf->features =3D features; --=20 2.45.2 From nobody Mon Sep 16 19:20:48 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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Sat, 20 Jul 2024 02:31:18 -0700 (PDT) From: Akihiko Odaki Date: Sat, 20 Jul 2024 18:30:50 +0900 Subject: [PATCH v4 2/6] target/arm/kvm: Do not silently remove PMU MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240720-pmu-v4-2-2a2b28f6b08f@daynix.com> References: <20240720-pmu-v4-0-2a2b28f6b08f@daynix.com> In-Reply-To: <20240720-pmu-v4-0-2a2b28f6b08f@daynix.com> To: Peter Maydell , Thomas Huth , Laurent Vivier , Paolo Bonzini , Cornelia Huck Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org, kvm@vger.kernel.org, Akihiko Odaki X-Mailer: b4 0.14-dev-fd6e3 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=2607:f8b0:4864:20::62e; envelope-from=akihiko.odaki@daynix.com; helo=mail-pl1-x62e.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: 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 @daynix-com.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1721467956652116600 kvm_arch_init_vcpu() used to remove PMU when it is not available even if the CPU model needs one. It is semantically incorrect, and may continue execution on a misbehaving host that advertises a CPU model while lacking its PMU. Keep the PMU when the CPU model needs one, and let kvm_arm_vcpu_init() fail if the KVM implementation mismatches with our expectation. Signed-off-by: Akihiko Odaki --- target/arm/kvm.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/target/arm/kvm.c b/target/arm/kvm.c index b20a35052f41..849e2e21b304 100644 --- a/target/arm/kvm.c +++ b/target/arm/kvm.c @@ -1888,13 +1888,8 @@ int kvm_arch_init_vcpu(CPUState *cs) if (!arm_feature(env, ARM_FEATURE_AARCH64)) { cpu->kvm_init_features[0] |=3D 1 << KVM_ARM_VCPU_EL1_32BIT; } - if (!kvm_check_extension(cs->kvm_state, KVM_CAP_ARM_PMU_V3)) { - cpu->has_pmu =3D false; - } if (cpu->has_pmu) { cpu->kvm_init_features[0] |=3D 1 << KVM_ARM_VCPU_PMU_V3; - } else { - env->features &=3D ~(1ULL << ARM_FEATURE_PMU); } if (cpu_isar_feature(aa64_sve, cpu)) { assert(kvm_arm_sve_supported()); --=20 2.45.2 From nobody Mon Sep 16 19:20:48 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; 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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240720-pmu-v4-3-2a2b28f6b08f@daynix.com> References: <20240720-pmu-v4-0-2a2b28f6b08f@daynix.com> In-Reply-To: <20240720-pmu-v4-0-2a2b28f6b08f@daynix.com> To: Peter Maydell , Thomas Huth , Laurent Vivier , Paolo Bonzini , Cornelia Huck Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org, kvm@vger.kernel.org, Akihiko Odaki X-Mailer: b4 0.14-dev-fd6e3 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=2607:f8b0:4864:20::632; envelope-from=akihiko.odaki@daynix.com; helo=mail-pl1-x632.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: 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 @daynix-com.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1721467986759116600 kvm-steal-time and sve properties are added for KVM even if the corresponding features are not available. Always add pmu property for Armv8. Note that the property is added only for Armv7-A/R+ as QEMU currently emulates PMU only for such versions, and a different version may have a different definition of PMU or may not have one at all. Signed-off-by: Akihiko Odaki --- target/arm/cpu.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 19191c239181..c1955a82fb3c 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -1741,6 +1741,10 @@ void arm_cpu_post_init(Object *obj) =20 if (!arm_feature(&cpu->env, ARM_FEATURE_M)) { qdev_property_add_static(DEVICE(obj), &arm_cpu_reset_hivecs_proper= ty); + + if (arm_feature(&cpu->env, ARM_FEATURE_V7)) { + object_property_add_bool(obj, "pmu", arm_get_pmu, arm_set_pmu); + } } =20 if (arm_feature(&cpu->env, ARM_FEATURE_V8)) { @@ -1770,7 +1774,6 @@ void arm_cpu_post_init(Object *obj) =20 if (arm_feature(&cpu->env, ARM_FEATURE_PMU)) { cpu->has_pmu =3D true; - object_property_add_bool(obj, "pmu", arm_get_pmu, arm_set_pmu); } =20 /* --=20 2.45.2 From nobody Mon Sep 16 19:20:48 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; 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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240720-pmu-v4-4-2a2b28f6b08f@daynix.com> References: <20240720-pmu-v4-0-2a2b28f6b08f@daynix.com> In-Reply-To: <20240720-pmu-v4-0-2a2b28f6b08f@daynix.com> To: Peter Maydell , Thomas Huth , Laurent Vivier , Paolo Bonzini , Cornelia Huck Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org, kvm@vger.kernel.org, Akihiko Odaki X-Mailer: b4 0.14-dev-fd6e3 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=2607:f8b0:4864:20::102e; envelope-from=akihiko.odaki@daynix.com; helo=mail-pj1-x102e.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: 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 @daynix-com.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1721468006819116600 Any sysreg access results in an exception unless defined otherwise so we should raise an exception by default. Signed-off-by: Akihiko Odaki --- target/arm/hvf/hvf.c | 174 +++++++++++++++++++++++++----------------------= ---- 1 file changed, 85 insertions(+), 89 deletions(-) diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c index eb090e67a2f8..1a749534fb0d 100644 --- a/target/arm/hvf/hvf.c +++ b/target/arm/hvf/hvf.c @@ -1199,57 +1199,56 @@ static bool hvf_sysreg_read_cp(CPUState *cpu, uint3= 2_t reg, uint64_t *val) return false; } =20 -static int hvf_sysreg_read(CPUState *cpu, uint32_t reg, uint32_t rt) +static int hvf_sysreg_read(CPUState *cpu, uint32_t reg, uint64_t *val) { ARMCPU *arm_cpu =3D ARM_CPU(cpu); CPUARMState *env =3D &arm_cpu->env; - uint64_t val =3D 0; =20 switch (reg) { case SYSREG_CNTPCT_EL0: - val =3D qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / + *val =3D qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / gt_cntfrq_period_ns(arm_cpu); - break; + return 0; case SYSREG_PMCR_EL0: - val =3D env->cp15.c9_pmcr; - break; + *val =3D env->cp15.c9_pmcr; + return 0; case SYSREG_PMCCNTR_EL0: pmu_op_start(env); - val =3D env->cp15.c15_ccnt; + *val =3D env->cp15.c15_ccnt; pmu_op_finish(env); - break; + return 0; case SYSREG_PMCNTENCLR_EL0: - val =3D env->cp15.c9_pmcnten; - break; + *val =3D env->cp15.c9_pmcnten; + return 0; case SYSREG_PMOVSCLR_EL0: - val =3D env->cp15.c9_pmovsr; - break; + *val =3D env->cp15.c9_pmovsr; + return 0; case SYSREG_PMSELR_EL0: - val =3D env->cp15.c9_pmselr; - break; + *val =3D env->cp15.c9_pmselr; + return 0; case SYSREG_PMINTENCLR_EL1: - val =3D env->cp15.c9_pminten; - break; + *val =3D env->cp15.c9_pminten; + return 0; case SYSREG_PMCCFILTR_EL0: - val =3D env->cp15.pmccfiltr_el0; - break; + *val =3D env->cp15.pmccfiltr_el0; + return 0; case SYSREG_PMCNTENSET_EL0: - val =3D env->cp15.c9_pmcnten; - break; + *val =3D env->cp15.c9_pmcnten; + return 0; case SYSREG_PMUSERENR_EL0: - val =3D env->cp15.c9_pmuserenr; - break; + *val =3D env->cp15.c9_pmuserenr; + return 0; case SYSREG_PMCEID0_EL0: case SYSREG_PMCEID1_EL0: /* We can't really count anything yet, declare all events invalid = */ - val =3D 0; - break; + *val =3D 0; + return 0; case SYSREG_OSLSR_EL1: - val =3D env->cp15.oslsr_el1; - break; + *val =3D env->cp15.oslsr_el1; + return 0; case SYSREG_OSDLR_EL1: /* Dummy register */ - break; + return 0; case SYSREG_ICC_AP0R0_EL1: case SYSREG_ICC_AP0R1_EL1: case SYSREG_ICC_AP0R2_EL1: @@ -1276,9 +1275,8 @@ static int hvf_sysreg_read(CPUState *cpu, uint32_t re= g, uint32_t rt) case SYSREG_ICC_SRE_EL1: case SYSREG_ICC_CTLR_EL1: /* Call the TCG sysreg handler. This is only safe for GICv3 regs. = */ - if (!hvf_sysreg_read_cp(cpu, reg, &val)) { - hvf_raise_exception(cpu, EXCP_UDEF, syn_uncategorized()); - return 1; + if (hvf_sysreg_read_cp(cpu, reg, &val)) { + return 0; } break; case SYSREG_DBGBVR0_EL1: @@ -1297,8 +1295,8 @@ static int hvf_sysreg_read(CPUState *cpu, uint32_t re= g, uint32_t rt) case SYSREG_DBGBVR13_EL1: case SYSREG_DBGBVR14_EL1: case SYSREG_DBGBVR15_EL1: - val =3D env->cp15.dbgbvr[SYSREG_CRM(reg)]; - break; + *val =3D env->cp15.dbgbvr[SYSREG_CRM(reg)]; + return 0; case SYSREG_DBGBCR0_EL1: case SYSREG_DBGBCR1_EL1: case SYSREG_DBGBCR2_EL1: @@ -1315,8 +1313,8 @@ static int hvf_sysreg_read(CPUState *cpu, uint32_t re= g, uint32_t rt) case SYSREG_DBGBCR13_EL1: case SYSREG_DBGBCR14_EL1: case SYSREG_DBGBCR15_EL1: - val =3D env->cp15.dbgbcr[SYSREG_CRM(reg)]; - break; + *val =3D env->cp15.dbgbcr[SYSREG_CRM(reg)]; + return 0; case SYSREG_DBGWVR0_EL1: case SYSREG_DBGWVR1_EL1: case SYSREG_DBGWVR2_EL1: @@ -1333,8 +1331,8 @@ static int hvf_sysreg_read(CPUState *cpu, uint32_t re= g, uint32_t rt) case SYSREG_DBGWVR13_EL1: case SYSREG_DBGWVR14_EL1: case SYSREG_DBGWVR15_EL1: - val =3D env->cp15.dbgwvr[SYSREG_CRM(reg)]; - break; + *val =3D env->cp15.dbgwvr[SYSREG_CRM(reg)]; + return 0; case SYSREG_DBGWCR0_EL1: case SYSREG_DBGWCR1_EL1: case SYSREG_DBGWCR2_EL1: @@ -1351,35 +1349,25 @@ static int hvf_sysreg_read(CPUState *cpu, uint32_t = reg, uint32_t rt) case SYSREG_DBGWCR13_EL1: case SYSREG_DBGWCR14_EL1: case SYSREG_DBGWCR15_EL1: - val =3D env->cp15.dbgwcr[SYSREG_CRM(reg)]; - break; + *val =3D env->cp15.dbgwcr[SYSREG_CRM(reg)]; + return 0; default: if (is_id_sysreg(reg)) { /* ID system registers read as RES0 */ - val =3D 0; - break; + *val =3D 0; + return 0; } - cpu_synchronize_state(cpu); - trace_hvf_unhandled_sysreg_read(env->pc, reg, - SYSREG_OP0(reg), - SYSREG_OP1(reg), - SYSREG_CRN(reg), - SYSREG_CRM(reg), - SYSREG_OP2(reg)); - hvf_raise_exception(cpu, EXCP_UDEF, syn_uncategorized()); - return 1; } =20 - trace_hvf_sysreg_read(reg, - SYSREG_OP0(reg), - SYSREG_OP1(reg), - SYSREG_CRN(reg), - SYSREG_CRM(reg), - SYSREG_OP2(reg), - val); - hvf_set_reg(cpu, rt, val); - - return 0; + cpu_synchronize_state(cpu); + trace_hvf_unhandled_sysreg_read(env->pc, reg, + SYSREG_OP0(reg), + SYSREG_OP1(reg), + SYSREG_CRN(reg), + SYSREG_CRM(reg), + SYSREG_OP2(reg)); + hvf_raise_exception(cpu, EXCP_UDEF, syn_uncategorized()); + return 1; } =20 static void pmu_update_irq(CPUARMState *env) @@ -1503,7 +1491,7 @@ static int hvf_sysreg_write(CPUState *cpu, uint32_t r= eg, uint64_t val) pmu_op_start(env); env->cp15.c15_ccnt =3D val; pmu_op_finish(env); - break; + return 0; case SYSREG_PMCR_EL0: pmu_op_start(env); =20 @@ -1523,45 +1511,45 @@ static int hvf_sysreg_write(CPUState *cpu, uint32_t= reg, uint64_t val) env->cp15.c9_pmcr |=3D (val & PMCR_WRITABLE_MASK); =20 pmu_op_finish(env); - break; + return 0; case SYSREG_PMUSERENR_EL0: env->cp15.c9_pmuserenr =3D val & 0xf; - break; + return 0; case SYSREG_PMCNTENSET_EL0: env->cp15.c9_pmcnten |=3D (val & pmu_counter_mask(env)); - break; + return 0; case SYSREG_PMCNTENCLR_EL0: env->cp15.c9_pmcnten &=3D ~(val & pmu_counter_mask(env)); - break; + return 0; case SYSREG_PMINTENCLR_EL1: pmu_op_start(env); env->cp15.c9_pminten |=3D val; pmu_op_finish(env); - break; + return 0; case SYSREG_PMOVSCLR_EL0: pmu_op_start(env); env->cp15.c9_pmovsr &=3D ~val; pmu_op_finish(env); - break; + return 0; case SYSREG_PMSWINC_EL0: pmu_op_start(env); pmswinc_write(env, val); pmu_op_finish(env); - break; + return 0; case SYSREG_PMSELR_EL0: env->cp15.c9_pmselr =3D val & 0x1f; - break; + return 0; case SYSREG_PMCCFILTR_EL0: pmu_op_start(env); env->cp15.pmccfiltr_el0 =3D val & PMCCFILTR_EL0; pmu_op_finish(env); - break; + return 0; case SYSREG_OSLAR_EL1: env->cp15.oslsr_el1 =3D val & 1; - break; + return 0; case SYSREG_OSDLR_EL1: /* Dummy register */ - break; + return 0; case SYSREG_ICC_AP0R0_EL1: case SYSREG_ICC_AP0R1_EL1: case SYSREG_ICC_AP0R2_EL1: @@ -1591,10 +1579,10 @@ static int hvf_sysreg_write(CPUState *cpu, uint32_t= reg, uint64_t val) if (!hvf_sysreg_write_cp(cpu, reg, val)) { hvf_raise_exception(cpu, EXCP_UDEF, syn_uncategorized()); } - break; + return 0; case SYSREG_MDSCR_EL1: env->cp15.mdscr_el1 =3D val; - break; + return 0; case SYSREG_DBGBVR0_EL1: case SYSREG_DBGBVR1_EL1: case SYSREG_DBGBVR2_EL1: @@ -1612,7 +1600,7 @@ static int hvf_sysreg_write(CPUState *cpu, uint32_t r= eg, uint64_t val) case SYSREG_DBGBVR14_EL1: case SYSREG_DBGBVR15_EL1: env->cp15.dbgbvr[SYSREG_CRM(reg)] =3D val; - break; + return 0; case SYSREG_DBGBCR0_EL1: case SYSREG_DBGBCR1_EL1: case SYSREG_DBGBCR2_EL1: @@ -1630,7 +1618,7 @@ static int hvf_sysreg_write(CPUState *cpu, uint32_t r= eg, uint64_t val) case SYSREG_DBGBCR14_EL1: case SYSREG_DBGBCR15_EL1: env->cp15.dbgbcr[SYSREG_CRM(reg)] =3D val; - break; + return 0; case SYSREG_DBGWVR0_EL1: case SYSREG_DBGWVR1_EL1: case SYSREG_DBGWVR2_EL1: @@ -1648,7 +1636,7 @@ static int hvf_sysreg_write(CPUState *cpu, uint32_t r= eg, uint64_t val) case SYSREG_DBGWVR14_EL1: case SYSREG_DBGWVR15_EL1: env->cp15.dbgwvr[SYSREG_CRM(reg)] =3D val; - break; + return 0; case SYSREG_DBGWCR0_EL1: case SYSREG_DBGWCR1_EL1: case SYSREG_DBGWCR2_EL1: @@ -1666,20 +1654,18 @@ static int hvf_sysreg_write(CPUState *cpu, uint32_t= reg, uint64_t val) case SYSREG_DBGWCR14_EL1: case SYSREG_DBGWCR15_EL1: env->cp15.dbgwcr[SYSREG_CRM(reg)] =3D val; - break; - default: - cpu_synchronize_state(cpu); - trace_hvf_unhandled_sysreg_write(env->pc, reg, - SYSREG_OP0(reg), - SYSREG_OP1(reg), - SYSREG_CRN(reg), - SYSREG_CRM(reg), - SYSREG_OP2(reg)); - hvf_raise_exception(cpu, EXCP_UDEF, syn_uncategorized()); - return 1; + return 0; } =20 - return 0; + cpu_synchronize_state(cpu); + trace_hvf_unhandled_sysreg_write(env->pc, reg, + SYSREG_OP0(reg), + SYSREG_OP1(reg), + SYSREG_CRN(reg), + SYSREG_CRM(reg), + SYSREG_OP2(reg)); + hvf_raise_exception(cpu, EXCP_UDEF, syn_uncategorized()); + return 1; } =20 static int hvf_inject_interrupts(CPUState *cpu) @@ -1944,7 +1930,17 @@ int hvf_vcpu_exec(CPUState *cpu) int sysreg_ret =3D 0; =20 if (isread) { - sysreg_ret =3D hvf_sysreg_read(cpu, reg, rt); + sysreg_ret =3D hvf_sysreg_read(cpu, reg, &val); + if (!sysreg_ret) { + trace_hvf_sysreg_read(reg, + SYSREG_OP0(reg), + SYSREG_OP1(reg), + SYSREG_CRN(reg), + SYSREG_CRM(reg), + SYSREG_OP2(reg), + val); + hvf_set_reg(cpu, rt, val); + } } else { val =3D hvf_get_reg(cpu, rt); 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Sat, 20 Jul 2024 02:31:30 -0700 (PDT) From: Akihiko Odaki Date: Sat, 20 Jul 2024 18:30:53 +0900 Subject: [PATCH v4 5/6] hvf: arm: Properly disable PMU MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240720-pmu-v4-5-2a2b28f6b08f@daynix.com> References: <20240720-pmu-v4-0-2a2b28f6b08f@daynix.com> In-Reply-To: <20240720-pmu-v4-0-2a2b28f6b08f@daynix.com> To: Peter Maydell , Thomas Huth , Laurent Vivier , Paolo Bonzini , Cornelia Huck Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org, kvm@vger.kernel.org, Akihiko Odaki X-Mailer: b4 0.14-dev-fd6e3 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=2607:f8b0:4864:20::62d; envelope-from=akihiko.odaki@daynix.com; helo=mail-pl1-x62d.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: 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 @daynix-com.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1721467932555116600 Setting pmu property used to have no effect for hvf so fix it. Signed-off-by: Akihiko Odaki --- target/arm/hvf/hvf.c | 184 +++++++++++++++++++++++++++--------------------= ---- 1 file changed, 97 insertions(+), 87 deletions(-) diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c index 1a749534fb0d..adcdfae0b17f 100644 --- a/target/arm/hvf/hvf.c +++ b/target/arm/hvf/hvf.c @@ -1204,45 +1204,50 @@ static int hvf_sysreg_read(CPUState *cpu, uint32_t = reg, uint64_t *val) ARMCPU *arm_cpu =3D ARM_CPU(cpu); CPUARMState *env =3D &arm_cpu->env; =20 + if (arm_feature(env, ARM_FEATURE_PMU)) { + switch (reg) { + case SYSREG_PMCR_EL0: + *val =3D env->cp15.c9_pmcr; + return 0; + case SYSREG_PMCCNTR_EL0: + pmu_op_start(env); + *val =3D env->cp15.c15_ccnt; + pmu_op_finish(env); + return 0; + case SYSREG_PMCNTENCLR_EL0: + *val =3D env->cp15.c9_pmcnten; + return 0; + case SYSREG_PMOVSCLR_EL0: + *val =3D env->cp15.c9_pmovsr; + return 0; + case SYSREG_PMSELR_EL0: + *val =3D env->cp15.c9_pmselr; + return 0; + case SYSREG_PMINTENCLR_EL1: + *val =3D env->cp15.c9_pminten; + return 0; + case SYSREG_PMCCFILTR_EL0: + *val =3D env->cp15.pmccfiltr_el0; + return 0; + case SYSREG_PMCNTENSET_EL0: + *val =3D env->cp15.c9_pmcnten; + return 0; + case SYSREG_PMUSERENR_EL0: + *val =3D env->cp15.c9_pmuserenr; + return 0; + case SYSREG_PMCEID0_EL0: + case SYSREG_PMCEID1_EL0: + /* We can't really count anything yet, declare all events inva= lid */ + *val =3D 0; + return 0; + } + } + switch (reg) { case SYSREG_CNTPCT_EL0: *val =3D qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / gt_cntfrq_period_ns(arm_cpu); return 0; - case SYSREG_PMCR_EL0: - *val =3D env->cp15.c9_pmcr; - return 0; - case SYSREG_PMCCNTR_EL0: - pmu_op_start(env); - *val =3D env->cp15.c15_ccnt; - pmu_op_finish(env); - return 0; - case SYSREG_PMCNTENCLR_EL0: - *val =3D env->cp15.c9_pmcnten; - return 0; - case SYSREG_PMOVSCLR_EL0: - *val =3D env->cp15.c9_pmovsr; - return 0; - case SYSREG_PMSELR_EL0: - *val =3D env->cp15.c9_pmselr; - return 0; - case SYSREG_PMINTENCLR_EL1: - *val =3D env->cp15.c9_pminten; - return 0; - case SYSREG_PMCCFILTR_EL0: - *val =3D env->cp15.pmccfiltr_el0; - return 0; - case SYSREG_PMCNTENSET_EL0: - *val =3D env->cp15.c9_pmcnten; - return 0; - case SYSREG_PMUSERENR_EL0: - *val =3D env->cp15.c9_pmuserenr; - return 0; - case SYSREG_PMCEID0_EL0: - case SYSREG_PMCEID1_EL0: - /* We can't really count anything yet, declare all events invalid = */ - *val =3D 0; - return 0; case SYSREG_OSLSR_EL1: *val =3D env->cp15.oslsr_el1; return 0; @@ -1486,64 +1491,69 @@ static int hvf_sysreg_write(CPUState *cpu, uint32_t= reg, uint64_t val) SYSREG_OP2(reg), val); =20 - switch (reg) { - case SYSREG_PMCCNTR_EL0: - pmu_op_start(env); - env->cp15.c15_ccnt =3D val; - pmu_op_finish(env); - return 0; - case SYSREG_PMCR_EL0: - pmu_op_start(env); + if (arm_feature(env, ARM_FEATURE_PMU)) { + switch (reg) { + case SYSREG_PMCCNTR_EL0: + pmu_op_start(env); + env->cp15.c15_ccnt =3D val; + pmu_op_finish(env); + return 0; + case SYSREG_PMCR_EL0: + pmu_op_start(env); =20 - if (val & PMCRC) { - /* The counter has been reset */ - env->cp15.c15_ccnt =3D 0; - } + if (val & PMCRC) { + /* The counter has been reset */ + env->cp15.c15_ccnt =3D 0; + } =20 - if (val & PMCRP) { - unsigned int i; - for (i =3D 0; i < pmu_num_counters(env); i++) { - env->cp15.c14_pmevcntr[i] =3D 0; + if (val & PMCRP) { + unsigned int i; + for (i =3D 0; i < pmu_num_counters(env); i++) { + env->cp15.c14_pmevcntr[i] =3D 0; + } } - } =20 - env->cp15.c9_pmcr &=3D ~PMCR_WRITABLE_MASK; - env->cp15.c9_pmcr |=3D (val & PMCR_WRITABLE_MASK); + env->cp15.c9_pmcr &=3D ~PMCR_WRITABLE_MASK; + env->cp15.c9_pmcr |=3D (val & PMCR_WRITABLE_MASK); =20 - pmu_op_finish(env); - return 0; - case SYSREG_PMUSERENR_EL0: - env->cp15.c9_pmuserenr =3D val & 0xf; - return 0; - case SYSREG_PMCNTENSET_EL0: - env->cp15.c9_pmcnten |=3D (val & pmu_counter_mask(env)); - return 0; - case SYSREG_PMCNTENCLR_EL0: - env->cp15.c9_pmcnten &=3D ~(val & pmu_counter_mask(env)); - return 0; - case SYSREG_PMINTENCLR_EL1: - pmu_op_start(env); - env->cp15.c9_pminten |=3D val; - pmu_op_finish(env); - return 0; - case SYSREG_PMOVSCLR_EL0: - pmu_op_start(env); - env->cp15.c9_pmovsr &=3D ~val; - pmu_op_finish(env); - return 0; - case SYSREG_PMSWINC_EL0: - pmu_op_start(env); - pmswinc_write(env, val); - pmu_op_finish(env); - return 0; - case SYSREG_PMSELR_EL0: - env->cp15.c9_pmselr =3D val & 0x1f; - return 0; - case SYSREG_PMCCFILTR_EL0: - pmu_op_start(env); - env->cp15.pmccfiltr_el0 =3D val & PMCCFILTR_EL0; - pmu_op_finish(env); - return 0; + pmu_op_finish(env); + return 0; + case SYSREG_PMUSERENR_EL0: + env->cp15.c9_pmuserenr =3D val & 0xf; + return 0; + case SYSREG_PMCNTENSET_EL0: + env->cp15.c9_pmcnten |=3D (val & pmu_counter_mask(env)); + return 0; + case SYSREG_PMCNTENCLR_EL0: + env->cp15.c9_pmcnten &=3D ~(val & pmu_counter_mask(env)); + return 0; + case SYSREG_PMINTENCLR_EL1: + pmu_op_start(env); + env->cp15.c9_pminten |=3D val; + pmu_op_finish(env); + return 0; + case SYSREG_PMOVSCLR_EL0: + pmu_op_start(env); + env->cp15.c9_pmovsr &=3D ~val; + pmu_op_finish(env); + return 0; + case SYSREG_PMSWINC_EL0: + pmu_op_start(env); + pmswinc_write(env, val); + pmu_op_finish(env); + return 0; + case SYSREG_PMSELR_EL0: + env->cp15.c9_pmselr =3D val & 0x1f; + return 0; + case SYSREG_PMCCFILTR_EL0: + pmu_op_start(env); + env->cp15.pmccfiltr_el0 =3D val & PMCCFILTR_EL0; + pmu_op_finish(env); + return 0; + } + } + + switch (reg) { case SYSREG_OSLAR_EL1: env->cp15.oslsr_el1 =3D val & 1; return 0; --=20 2.45.2 From nobody Mon Sep 16 19:20:48 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1721467936; cv=none; d=zohomail.com; s=zohoarc; b=jLD7d6E2/go3opu1vV17fdrK2OImWj36lgr9S9ZCWSoEg10rrAh4/G470qHq0+2KcWKSjH3CCJss05ofw3ZMejvUUdf5y8aecVfZcAIca+RQtvHrGHrmdUqXtq3er3mMMlgwPwSgN/tQ322WsBr9kzZKvpAGPMjBqH8XTxGIA30= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1721467936; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; 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Sat, 20 Jul 2024 02:31:34 -0700 (PDT) From: Akihiko Odaki Date: Sat, 20 Jul 2024 18:30:54 +0900 Subject: [PATCH v4 6/6] hvf: arm: Do not advance PC when raising an exception MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240720-pmu-v4-6-2a2b28f6b08f@daynix.com> References: <20240720-pmu-v4-0-2a2b28f6b08f@daynix.com> In-Reply-To: <20240720-pmu-v4-0-2a2b28f6b08f@daynix.com> To: Peter Maydell , Thomas Huth , Laurent Vivier , Paolo Bonzini , Cornelia Huck Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org, kvm@vger.kernel.org, Akihiko Odaki X-Mailer: b4 0.14-dev-fd6e3 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=2607:f8b0:4864:20::42d; envelope-from=akihiko.odaki@daynix.com; helo=mail-pf1-x42d.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: 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 @daynix-com.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1721467938639116600 This is identical with commit 30a1690f2402 ("hvf: arm: Do not advance PC when raising an exception") but for writes instead of reads. Fixes: a2260983c655 ("hvf: arm: Add support for GICv3") Signed-off-by: Akihiko Odaki --- target/arm/hvf/hvf.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c index adcdfae0b17f..c1496ad5be9b 100644 --- a/target/arm/hvf/hvf.c +++ b/target/arm/hvf/hvf.c @@ -1586,10 +1586,10 @@ static int hvf_sysreg_write(CPUState *cpu, uint32_t= reg, uint64_t val) case SYSREG_ICC_SGI1R_EL1: case SYSREG_ICC_SRE_EL1: /* Call the TCG sysreg handler. This is only safe for GICv3 regs. = */ - if (!hvf_sysreg_write_cp(cpu, reg, val)) { - hvf_raise_exception(cpu, EXCP_UDEF, syn_uncategorized()); + if (hvf_sysreg_write_cp(cpu, reg, val)) { + return 0; } - return 0; + break; case SYSREG_MDSCR_EL1: env->cp15.mdscr_el1 =3D val; return 0; --=20 2.45.2