[v4] WHPX support for Arm

[PATCH v4 11/17] target/arm: cpu: mark WHPX as supporting PSCI 1.1

Mohamed Mediouni posted 17 patches 3 months, 1 week ago

Diff against v1 v2 v3 v5 v6 v7 v8 v9 v9 v10
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Maintainers: Cameron Esfahani <dirty@apple.com>, Roman Bolshakov <rbolshakov@ddn.com>, Phil Dennis-Jordan <phil@philjordan.eu>, Mads Ynddal <mads@ynddal.dk>, Sunil Muthuswamy <sunilmut@microsoft.com>, Mohamed Mediouni <mohamed@unpredictable.fr>, Peter Maydell <peter.maydell@linaro.org>, "Michael S. Tsirkin" <mst@redhat.com>, Igor Mammedov <imammedo@redhat.com>, Ani Sinha <anisinha@redhat.com>, Shannon Zhao <shannon.zhaosl@gmail.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Paolo Bonzini <pbonzini@redhat.com>, Richard Henderson <richard.henderson@linaro.org>, Eduardo Habkost <eduardo@habkost.net>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Yanan Wang <wangyanan55@huawei.com>, Zhao Liu <zhao1.liu@intel.com>, "Marc-André Lureau" <marcandre.lureau@redhat.com>, "Daniel P. Berrangé" <berrange@redhat.com>, Alexander Graf <agraf@csgraf.de>

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[PATCH v4 11/17] target/arm: cpu: mark WHPX as supporting PSCI 1.1

Posted by Mohamed Mediouni 3 months, 1 week ago

Hyper-V supports PSCI 1.3, and that implementation is exposed through
WHPX.

Signed-off-by: Mohamed Mediouni <mohamed@unpredictable.fr>

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 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 e2b2337399..3b69c9786a 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -23,6 +23,7 @@
 #include "qemu/timer.h"
 #include "qemu/log.h"
 #include "exec/page-vary.h"
+#include "system/whpx.h"
 #include "target/arm/idau.h"
 #include "qemu/module.h"
 #include "qapi/error.h"
@@ -1496,7 +1497,7 @@ static void arm_cpu_initfn(Object *obj)
     cpu->psci_version = QEMU_PSCI_VERSION_0_1; /* By default assume PSCI v0.1 */
     cpu->kvm_target = QEMU_KVM_ARM_TARGET_NONE;
 
-    if (tcg_enabled() || hvf_enabled()) {
+    if (tcg_enabled() || hvf_enabled() || whpx_enabled()) {
         /* TCG and HVF implement PSCI 1.1 */
         cpu->psci_version = QEMU_PSCI_VERSION_1_1;
     }
-- 
2.39.5 (Apple Git-154)

Re: [PATCH v4 11/17] target/arm: cpu: mark WHPX as supporting PSCI 1.1

Posted by Pierrick Bouvier 3 months, 1 week ago

On 8/4/25 7:23 AM, Mohamed Mediouni wrote:
> Hyper-V supports PSCI 1.3, and that implementation is exposed through
> WHPX.
> 
> Signed-off-by: Mohamed Mediouni <mohamed@unpredictable.fr>
> 
> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>   target/arm/cpu.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>