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From: Paolo Bonzini <pbonzini@redhat.com>
To: qemu-devel@nongnu.org
Cc: xiaoyao.li@intel.com, zhao1.liu@intel.com
Subject: [PATCH 4/4] target/i386: move accel_cpu_instance_init to .instance_init
Date: Fri, 11 Jul 2025 02:06:03 +0200	[thread overview]
Message-ID: <20250711000603.438312-5-pbonzini@redhat.com> (raw)
In-Reply-To: <20250711000603.438312-1-pbonzini@redhat.com>

With the reordering of instance_post_init callbacks that is new in 10.1
accel_cpu_instance_init must execute in .instance_init as is already
the case for RISC-V.  Otherwise, for example, setting the vendor
property is broken when using KVM or Hypervisor.framework, because
KVM sets it *after* the user's value is set by DeviceState's
intance_post_init callback.

Reported-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 target/i386/cpu.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 46d59229200..5f95bb97b82 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -6207,8 +6207,8 @@ static void max_x86_cpu_initfn(Object *obj)
     CPUX86State *env = &cpu->env;
 
     /*
-     * these defaults are used for TCG, other accelerators overwrite these
-     * values
+     * these defaults are used for TCG, other accelerators have overwritten
+     * these values
      */
     if (!env->cpuid_vendor1) {
         object_property_set_str(OBJECT(cpu), "vendor", CPUID_VENDOR_AMD,
@@ -9043,8 +9043,6 @@ static void x86_cpu_post_initfn(Object *obj)
         }
     }
 
-    accel_cpu_instance_init(CPU(obj));
-
 #ifndef CONFIG_USER_ONLY
     if (current_machine && current_machine->cgs) {
         x86_confidential_guest_cpu_instance_init(
@@ -9119,6 +9117,8 @@ static void x86_cpu_initfn(Object *obj)
     if (xcc->model) {
         x86_cpu_load_model(cpu, xcc->model);
     }
+
+    accel_cpu_instance_init(CPU(obj));
 }
 
 static int64_t x86_cpu_get_arch_id(CPUState *cs)
-- 
2.50.0



  parent reply	other threads:[~2025-07-11  0:12 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-07-11  0:05 [PATCH 0/4] target/i386: fix position of accel_cpu_instance_init Paolo Bonzini
2025-07-11  0:06 ` [PATCH 1/4] target/i386: move max_features to class Paolo Bonzini
2025-07-11  1:52   ` Xiaoyao Li
2025-07-11  3:43   ` Zhao Liu
2025-07-11  0:06 ` [PATCH 2/4] target/i386: nvmm, whpx: add accel/CPU class that sets host vendor Paolo Bonzini
2025-07-11  2:12   ` Xiaoyao Li
2025-07-11  2:17   ` Xiaoyao Li
2025-07-11  6:35     ` Paolo Bonzini
2025-07-11  6:40       ` Xiaoyao Li
2025-07-11  7:46         ` Paolo Bonzini
2025-07-11  5:36   ` Zhao Liu
2025-07-11  0:06 ` [PATCH 3/4] target/i386: allow reordering max_x86_cpu_initfn vs accel CPU init Paolo Bonzini
2025-07-11  2:20   ` Xiaoyao Li
2025-07-11  6:08   ` Zhao Liu
2025-07-11  0:06 ` Paolo Bonzini [this message]
2025-07-11  2:26   ` [PATCH 4/4] target/i386: move accel_cpu_instance_init to .instance_init Xiaoyao Li
2025-07-11  6:37     ` Paolo Bonzini
2025-07-11  6:32   ` Zhao Liu

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