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Tue, 16 Jul 2024 05:50:48 -0700 (PDT) From: Akihiko Odaki Date: Tue, 16 Jul 2024 21:50:30 +0900 Subject: [PATCH v3 1/5] tests/arm-cpu-features: Do not assume PMU availability MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240716-pmu-v3-1-8c7c1858a227@daynix.com> References: <20240716-pmu-v3-0-8c7c1858a227@daynix.com> In-Reply-To: <20240716-pmu-v3-0-8c7c1858a227@daynix.com> To: Peter Maydell , Thomas Huth , Laurent Vivier , Paolo Bonzini Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org, kvm@vger.kernel.org, Akihiko Odaki , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= 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::22e; envelope-from=akihiko.odaki@daynix.com; helo=mail-oi1-x22e.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: 1721134353962116600 Asahi Linux supports KVM but lacks PMU support. Signed-off-by: Akihiko Odaki Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- tests/qtest/arm-cpu-features.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/tests/qtest/arm-cpu-features.c b/tests/qtest/arm-cpu-features.c index 966c65d5c3e4..cfd6f7735354 100644 --- a/tests/qtest/arm-cpu-features.c +++ b/tests/qtest/arm-cpu-features.c @@ -509,6 +509,7 @@ static void test_query_cpu_model_expansion_kvm(const vo= id *data) assert_set_feature(qts, "host", "kvm-no-adjvtime", false); =20 if (g_str_equal(qtest_get_arch(), "aarch64")) { + bool kvm_supports_pmu; bool kvm_supports_steal_time; bool kvm_supports_sve; char max_name[8], name[8]; @@ -537,11 +538,6 @@ static void test_query_cpu_model_expansion_kvm(const v= oid *data) =20 assert_has_feature_enabled(qts, "host", "aarch64"); =20 - /* Enabling and disabling pmu should always work. */ - assert_has_feature_enabled(qts, "host", "pmu"); - assert_set_feature(qts, "host", "pmu", false); - assert_set_feature(qts, "host", "pmu", true); - /* * Some features would be enabled by default, but they're disabled * because this instance of KVM doesn't support them. Test that the @@ -551,11 +547,18 @@ static void test_query_cpu_model_expansion_kvm(const = void *data) assert_has_feature(qts, "host", "sve"); =20 resp =3D do_query_no_props(qts, "host"); + kvm_supports_pmu =3D resp_get_feature(resp, "pmu"); kvm_supports_steal_time =3D resp_get_feature(resp, "kvm-steal-time= "); kvm_supports_sve =3D resp_get_feature(resp, "sve"); vls =3D resp_get_sve_vls(resp); qobject_unref(resp); =20 + if (kvm_supports_pmu) { + /* If we have pmu then we should be able to toggle it. */ + assert_set_feature(qts, "host", "pmu", false); + assert_set_feature(qts, "host", "pmu", true); + } + if (kvm_supports_steal_time) { /* If we have steal-time then we should be able to toggle it. = */ assert_set_feature(qts, "host", "kvm-steal-time", false); --=20 2.45.2 From nobody Mon Sep 16 19:08:22 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: <20240716-pmu-v3-2-8c7c1858a227@daynix.com> References: <20240716-pmu-v3-0-8c7c1858a227@daynix.com> In-Reply-To: <20240716-pmu-v3-0-8c7c1858a227@daynix.com> To: Peter Maydell , Thomas Huth , Laurent Vivier , Paolo Bonzini 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::635; envelope-from=akihiko.odaki@daynix.com; helo=mail-pl1-x635.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: 1721134317827116600 kvm_arm_get_host_cpu_features() used to add the PMU feature unconditionally, and kvm_arch_init_vcpu() removed it when it is actually not available. Conditionally add the PMU feature in kvm_arm_get_host_cpu_features() to save code. Signed-off-by: Akihiko Odaki --- target/arm/kvm.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/target/arm/kvm.c b/target/arm/kvm.c index 70f79eda33cd..849e2e21b304 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; @@ -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; 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Tue, 16 Jul 2024 05:50:56 -0700 (PDT) From: Akihiko Odaki Date: Tue, 16 Jul 2024 21:50:32 +0900 Subject: [PATCH v3 3/5] target/arm: Always add pmu property for Armv8 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240716-pmu-v3-3-8c7c1858a227@daynix.com> References: <20240716-pmu-v3-0-8c7c1858a227@daynix.com> In-Reply-To: <20240716-pmu-v3-0-8c7c1858a227@daynix.com> To: Peter Maydell , Thomas Huth , Laurent Vivier , Paolo Bonzini 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::534; envelope-from=akihiko.odaki@daynix.com; helo=mail-pg1-x534.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: 1721134319775116600 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 Armv8 as QEMU emulates PMUv3, which is part of Armv8. Signed-off-by: Akihiko Odaki --- target/arm/cpu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 14d4eca12740..64038e26b2a9 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -1744,6 +1744,8 @@ void arm_cpu_post_init(Object *obj) } =20 if (arm_feature(&cpu->env, ARM_FEATURE_V8)) { + object_property_add_bool(obj, "pmu", arm_get_pmu, arm_set_pmu); + object_property_add_uint64_ptr(obj, "rvbar", &cpu->rvbar_prop, OBJ_PROP_FLAG_READWRITE); @@ -1770,7 +1772,6 @@ 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 19:08:22 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: <20240716-pmu-v3-4-8c7c1858a227@daynix.com> References: <20240716-pmu-v3-0-8c7c1858a227@daynix.com> In-Reply-To: <20240716-pmu-v3-0-8c7c1858a227@daynix.com> To: Peter Maydell , Thomas Huth , Laurent Vivier , Paolo Bonzini 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::635; envelope-from=akihiko.odaki@daynix.com; helo=mail-pl1-x635.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: 1721134321786116600 hvf did not advance PC when raising an exception for most unhandled system registers, but it mistakenly advanced PC when raising an exception for GICv3 registers. Fixes: a2260983c655 ("hvf: arm: Add support for GICv3") Signed-off-by: Akihiko Odaki --- target/arm/hvf/hvf.c | 1 + 1 file changed, 1 insertion(+) diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c index ef9bc42738d0..eb090e67a2f8 100644 --- a/target/arm/hvf/hvf.c +++ b/target/arm/hvf/hvf.c @@ -1278,6 +1278,7 @@ static int hvf_sysreg_read(CPUState *cpu, uint32_t re= g, uint32_t rt) /* 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; } break; case SYSREG_DBGBVR0_EL1: --=20 2.45.2 From nobody Mon Sep 16 19:08:22 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=1721134317; cv=none; d=zohomail.com; s=zohoarc; b=SRS/J2Uj+Ylcr+okO41X866KYIvmzd86nvQFTmPVW4gBNmOTe0pzsUsJDUfy8mL+Oz6VU+dBzTCIQPU6fB6E3X3UqdpmWkL1sEPoHK+c163J55rqyRP9Xsj/HO37VOhGq4TnsQ4R824dBHhQBCfHE/759sXodJrgIYZKt5EQioo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1721134317; 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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Tue, 16 Jul 2024 05:51:03 -0700 (PDT) From: Akihiko Odaki Date: Tue, 16 Jul 2024 21:50:34 +0900 Subject: [PATCH v3 5/5] hvf: arm: Properly disable PMU MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240716-pmu-v3-5-8c7c1858a227@daynix.com> References: <20240716-pmu-v3-0-8c7c1858a227@daynix.com> In-Reply-To: <20240716-pmu-v3-0-8c7c1858a227@daynix.com> To: Peter Maydell , Thomas Huth , Laurent Vivier , Paolo Bonzini 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::62f; envelope-from=akihiko.odaki@daynix.com; helo=mail-pl1-x62f.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: 1721134317814116600 Setting pmu property used to have no effect for hvf so fix it. Signed-off-by: Akihiko Odaki --- target/arm/hvf/hvf.c | 317 ++++++++++++++++++++++++++---------------------= ---- 1 file changed, 163 insertions(+), 154 deletions(-) diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c index eb090e67a2f8..7c593c2d93de 100644 --- a/target/arm/hvf/hvf.c +++ b/target/arm/hvf/hvf.c @@ -1199,57 +1199,23 @@ 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, uint32_t rt, + 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) / - gt_cntfrq_period_ns(arm_cpu); - break; - case SYSREG_PMCR_EL0: - val =3D env->cp15.c9_pmcr; - break; - case SYSREG_PMCCNTR_EL0: - pmu_op_start(env); - val =3D env->cp15.c15_ccnt; - pmu_op_finish(env); - break; - case SYSREG_PMCNTENCLR_EL0: - val =3D env->cp15.c9_pmcnten; - break; - case SYSREG_PMOVSCLR_EL0: - val =3D env->cp15.c9_pmovsr; - break; - case SYSREG_PMSELR_EL0: - val =3D env->cp15.c9_pmselr; - break; - case SYSREG_PMINTENCLR_EL1: - val =3D env->cp15.c9_pminten; - break; - case SYSREG_PMCCFILTR_EL0: - val =3D env->cp15.pmccfiltr_el0; - break; - case SYSREG_PMCNTENSET_EL0: - val =3D env->cp15.c9_pmcnten; - break; - case SYSREG_PMUSERENR_EL0: - val =3D env->cp15.c9_pmuserenr; - break; - 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 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / + gt_cntfrq_period_ns(arm_cpu); + 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: @@ -1276,11 +1242,11 @@ static int hvf_sysreg_read(CPUState *cpu, uint32_t = reg, 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)) { + if (!hvf_sysreg_read_cp(cpu, reg, val)) { hvf_raise_exception(cpu, EXCP_UDEF, syn_uncategorized()); return 1; } - break; + return 0; case SYSREG_DBGBVR0_EL1: case SYSREG_DBGBVR1_EL1: case SYSREG_DBGBVR2_EL1: @@ -1297,8 +1263,8 @@ 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 +1281,8 @@ 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 +1299,8 @@ 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 +1317,64 @@ 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; - default: - if (is_id_sysreg(reg)) { - /* ID system registers read as RES0 */ - val =3D 0; - break; + *val =3D env->cp15.dbgwcr[SYSREG_CRM(reg)]; + return 0; + } + + 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; } - 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; - } - - 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); + } =20 - return 0; + if (is_id_sysreg(reg)) { + /* ID system registers read as RES0 */ + *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 static void pmu_update_irq(CPUARMState *env) @@ -1499,69 +1494,12 @@ static int hvf_sysreg_write(CPUState *cpu, uint32_t= reg, uint64_t val) val); =20 switch (reg) { - case SYSREG_PMCCNTR_EL0: - pmu_op_start(env); - env->cp15.c15_ccnt =3D val; - pmu_op_finish(env); - break; - case SYSREG_PMCR_EL0: - pmu_op_start(env); - - if (val & PMCRC) { - /* The counter has been reset */ - env->cp15.c15_ccnt =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; - } - } - - env->cp15.c9_pmcr &=3D ~PMCR_WRITABLE_MASK; - env->cp15.c9_pmcr |=3D (val & PMCR_WRITABLE_MASK); - - pmu_op_finish(env); - break; - case SYSREG_PMUSERENR_EL0: - env->cp15.c9_pmuserenr =3D val & 0xf; - break; - case SYSREG_PMCNTENSET_EL0: - env->cp15.c9_pmcnten |=3D (val & pmu_counter_mask(env)); - break; - case SYSREG_PMCNTENCLR_EL0: - env->cp15.c9_pmcnten &=3D ~(val & pmu_counter_mask(env)); - break; - case SYSREG_PMINTENCLR_EL1: - pmu_op_start(env); - env->cp15.c9_pminten |=3D val; - pmu_op_finish(env); - break; - case SYSREG_PMOVSCLR_EL0: - pmu_op_start(env); - env->cp15.c9_pmovsr &=3D ~val; - pmu_op_finish(env); - break; - case SYSREG_PMSWINC_EL0: - pmu_op_start(env); - pmswinc_write(env, val); - pmu_op_finish(env); - break; - case SYSREG_PMSELR_EL0: - env->cp15.c9_pmselr =3D val & 0x1f; - break; - case SYSREG_PMCCFILTR_EL0: - pmu_op_start(env); - env->cp15.pmccfiltr_el0 =3D val & PMCCFILTR_EL0; - pmu_op_finish(env); - break; 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 +1529,10 @@ 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 +1550,7 @@ 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 +1568,7 @@ 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 +1586,7 @@ 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 +1604,80 @@ 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; + 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); + + if (val & PMCRC) { + /* The counter has been reset */ + env->cp15.c15_ccnt =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; + } + } + + env->cp15.c9_pmcr &=3D ~PMCR_WRITABLE_MASK; + env->cp15.c9_pmcr |=3D (val & PMCR_WRITABLE_MASK); + + 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; + } + } + + 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 +1942,18 @@ 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, rt, &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); sysreg_ret =3D hvf_sysreg_write(cpu, reg, val); --=20 2.45.2