From: "Philippe Mathieu-Daudé" <philmd@linaro.org>
To: qemu-devel@nongnu.org
Cc: "Leif Lindholm" <leif.lindholm@oss.qualcomm.com>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Radoslaw Biernacki" <rad@semihalf.com>,
"Alexander Graf" <agraf@csgraf.de>,
"Philippe Mathieu-Daudé" <philmd@linaro.org>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Marc-André Lureau" <marcandre.lureau@redhat.com>,
"Phil Dennis-Jordan" <phil@philjordan.eu>,
"Alex Bennée" <alex.bennee@linaro.org>,
"Bernhard Beschow" <shentey@gmail.com>,
"Cleber Rosa" <crosa@redhat.com>,
"Peter Maydell" <peter.maydell@linaro.org>,
"Cameron Esfahani" <dirty@apple.com>,
kvm@vger.kernel.org, qemu-arm@nongnu.org,
"Eric Auger" <eric.auger@redhat.com>,
"Daniel P. Berrangé" <berrange@redhat.com>,
"Thomas Huth" <thuth@redhat.com>,
"Roman Bolshakov" <rbolshakov@ddn.com>,
"John Snow" <jsnow@redhat.com>
Subject: [PATCH v2 13/26] target/arm: Create GTimers *after* features finalized / accel realized
Date: Fri, 20 Jun 2025 15:06:56 +0200 [thread overview]
Message-ID: <20250620130709.31073-14-philmd@linaro.org> (raw)
In-Reply-To: <20250620130709.31073-1-philmd@linaro.org>
Call generic (including accelerator) cpu_realize() handlers
*before* setting @gt_cntfrq_hz default
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
target/arm/cpu.c | 65 ++++++++++++++++++++++++------------------------
1 file changed, 33 insertions(+), 32 deletions(-)
diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index e5b70f5de81..ab5fbd9b40b 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -1985,26 +1985,6 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
return;
}
- if (!cpu->gt_cntfrq_hz) {
- /*
- * 0 means "the board didn't set a value, use the default". (We also
- * get here for the CONFIG_USER_ONLY case.)
- * ARMv8.6 and later CPUs architecturally must use a 1GHz timer; before
- * that it was an IMPDEF choice, and QEMU initially picked 62.5MHz,
- * which gives a 16ns tick period.
- *
- * We will use the back-compat value:
- * - for QEMU CPU types added before we standardized on 1GHz
- * - for versioned machine types with a version of 9.0 or earlier
- */
- if (arm_feature(env, ARM_FEATURE_BACKCOMPAT_CNTFRQ) ||
- cpu->backcompat_cntfrq) {
- cpu->gt_cntfrq_hz = GTIMER_BACKCOMPAT_HZ;
- } else {
- cpu->gt_cntfrq_hz = GTIMER_DEFAULT_HZ;
- }
- }
-
#ifndef CONFIG_USER_ONLY
/* The NVIC and M-profile CPU are two halves of a single piece of
* hardware; trying to use one without the other is a command line
@@ -2051,7 +2031,40 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
return;
}
}
+#endif
+ cpu_exec_realizefn(cs, &local_err);
+ if (local_err != NULL) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ arm_cpu_finalize_features(cpu, &local_err);
+ if (local_err != NULL) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+#ifndef CONFIG_USER_ONLY
+ if (!cpu->gt_cntfrq_hz) {
+ /*
+ * 0 means "the board didn't set a value, use the default". (We also
+ * get here for the CONFIG_USER_ONLY case.)
+ * ARMv8.6 and later CPUs architecturally must use a 1GHz timer; before
+ * that it was an IMPDEF choice, and QEMU initially picked 62.5MHz,
+ * which gives a 16ns tick period.
+ *
+ * We will use the back-compat value:
+ * - for QEMU CPU types added before we standardized on 1GHz
+ * - for versioned machine types with a version of 9.0 or earlier
+ */
+ if (arm_feature(env, ARM_FEATURE_BACKCOMPAT_CNTFRQ) ||
+ cpu->backcompat_cntfrq) {
+ cpu->gt_cntfrq_hz = GTIMER_BACKCOMPAT_HZ;
+ } else {
+ cpu->gt_cntfrq_hz = GTIMER_DEFAULT_HZ;
+ }
+ }
{
uint64_t scale = gt_cntfrq_period_ns(cpu);
@@ -2072,18 +2085,6 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
}
#endif
- cpu_exec_realizefn(cs, &local_err);
- if (local_err != NULL) {
- error_propagate(errp, local_err);
- return;
- }
-
- arm_cpu_finalize_features(cpu, &local_err);
- if (local_err != NULL) {
- error_propagate(errp, local_err);
- return;
- }
-
#ifdef CONFIG_USER_ONLY
/*
* User mode relies on IC IVAU instructions to catch modification of
--
2.49.0
next prev parent reply other threads:[~2025-06-20 13:08 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-20 13:06 [PATCH v2 00/26] arm: Fixes and preparatory cleanups for split-accel Philippe Mathieu-Daudé
2025-06-20 13:06 ` [PATCH v2 01/26] target/arm: Remove arm_handle_psci_call() stub Philippe Mathieu-Daudé
2025-06-20 13:06 ` [PATCH v2 02/26] target/arm: Reduce arm_cpu_post_init() declaration scope Philippe Mathieu-Daudé
2025-06-20 13:06 ` [PATCH v2 03/26] target/arm: Unify gen_exception_internal() Philippe Mathieu-Daudé
2025-06-20 13:06 ` [PATCH v2 04/26] target/arm/hvf: Simplify GIC hvf_arch_init_vcpu() Philippe Mathieu-Daudé
2025-06-20 13:06 ` [PATCH v2 05/26] target/arm/hvf: Directly re-lock BQL after hv_vcpu_run() Philippe Mathieu-Daudé
2025-06-20 13:06 ` [PATCH v2 06/26] target/arm/hvf: Trace hv_vcpu_run() failures Philippe Mathieu-Daudé
2025-06-20 13:06 ` [PATCH v2 07/26] accel/hvf: Trace VM memory mapping Philippe Mathieu-Daudé
2025-06-20 13:06 ` [PATCH v2 08/26] target/arm/hvf: Log $pc in hvf_unknown_hvc() trace event Philippe Mathieu-Daudé
2025-06-20 13:06 ` [PATCH v2 09/26] target/arm: Correct KVM & HVF dtb_compatible value Philippe Mathieu-Daudé
2025-06-20 13:06 ` [PATCH v2 10/26] accel/hvf: Model PhysTimer register Philippe Mathieu-Daudé
2025-06-20 13:06 ` [PATCH v2 11/26] target/arm/hvf: Pass @target_el argument to hvf_raise_exception() Philippe Mathieu-Daudé
2025-06-20 13:06 ` [PATCH v2 12/26] target/arm: Restrict system register properties to system binary Philippe Mathieu-Daudé
2025-06-20 13:06 ` Philippe Mathieu-Daudé [this message]
2025-06-20 13:06 ` [PATCH v2 14/26] accel: Keep reference to AccelOpsClass in AccelClass Philippe Mathieu-Daudé
2025-06-20 13:06 ` [PATCH v2 15/26] accel: Introduce AccelOpsClass::cpu_target_realize() hook Philippe Mathieu-Daudé
2025-06-20 13:06 ` [PATCH v2 16/26] accel/hvf: Add hvf_arch_cpu_realize() stubs Philippe Mathieu-Daudé
2025-06-20 13:07 ` [PATCH v2 17/26] target/arm/hvf: Really set Generic Timer counter frequency Philippe Mathieu-Daudé
2025-06-20 13:07 ` [PATCH v2 18/26] target/arm/hvf: Trace host processor features Philippe Mathieu-Daudé
2025-06-20 13:07 ` [PATCH v2 19/26] hw/arm/virt: Only require TCG || QTest to use TrustZone Philippe Mathieu-Daudé
2025-06-20 13:07 ` [PATCH v2 20/26] hw/arm/virt: Only require TCG || QTest to use virtualization extension Philippe Mathieu-Daudé
2025-06-20 13:07 ` [PATCH v2 21/26] hw/arm/virt: Rename cpu_post_init() -> post_cpus_gic_realized() Philippe Mathieu-Daudé
2025-06-20 13:07 ` [PATCH v2 22/26] hw/arm/sbsa-ref: Tidy up use of RAMLIMIT_GB definition Philippe Mathieu-Daudé
2025-06-22 0:34 ` Richard Henderson
2025-06-20 13:07 ` [PATCH v2 23/26] tests/functional: Restrict nexted Aarch64 Xen test to TCG Philippe Mathieu-Daudé
2025-06-23 8:11 ` Thomas Huth
2025-06-23 11:59 ` Philippe Mathieu-Daudé
2025-06-23 12:05 ` Philippe Mathieu-Daudé
2025-06-20 13:07 ` [PATCH v2 24/26] tests/functional: Require TCG to run Aarch64 imx8mp-evk test Philippe Mathieu-Daudé
2025-06-23 8:19 ` Thomas Huth
2025-06-23 11:54 ` Philippe Mathieu-Daudé
2025-06-20 13:07 ` [PATCH v2 25/26] tests/functional: Add hvf_available() helper Philippe Mathieu-Daudé
2025-06-23 8:20 ` Thomas Huth
2025-06-20 13:07 ` [PATCH v2 26/26] tests/functional: Expand Aarch64 SMMU tests to run on HVF accelerator Philippe Mathieu-Daudé
2025-06-23 8:23 ` Thomas Huth
2025-06-23 11:53 ` Philippe Mathieu-Daudé
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