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[88.187.86.199]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-459c58ececdsm141719175e9.1.2025.08.08.13.53.53 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 08 Aug 2025 13:53:54 -0700 (PDT) Message-ID: Date: Fri, 8 Aug 2025 22:53:52 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 11/18] target/arm: cpu: mark WHPX as supporting PSCI 1.1 To: Mohamed Mediouni , qemu-devel@nongnu.org Cc: =?UTF-8?Q?Marc-Andr=C3=A9_Lureau?= , Igor Mammedov , Richard Henderson , Roman Bolshakov , Phil Dennis-Jordan , Ani Sinha , "Michael S. Tsirkin" , Alexander Graf , Peter Maydell , Mads Ynddal , Sunil Muthuswamy , Zhao Liu , Marcel Apfelbaum , Eduardo Habkost , Cameron Esfahani , Paolo Bonzini , =?UTF-8?Q?Daniel_P=2E_Berrang=C3=A9?= , Shannon Zhao , qemu-arm@nongnu.org, Yanan Wang , Pierrick Bouvier References: <20250808065419.47415-1-mohamed@unpredictable.fr> <20250808065419.47415-12-mohamed@unpredictable.fr> Content-Language: en-US From: =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= In-Reply-To: <20250808065419.47415-12-mohamed@unpredictable.fr> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2a00:1450:4864:20::32e; envelope-from=philmd@linaro.org; helo=mail-wm1-x32e.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 8/8/25 08:54, Mohamed Mediouni wrote: > Hyper-V supports PSCI 1.3, and that implementation is exposed through > WHPX. > > Signed-off-by: Mohamed Mediouni > > Reviewed-by: Richard Henderson > Reviewed-by: Pierrick Bouvier > --- > 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 */ (Update comment, or simply remove it?) > cpu->psci_version = QEMU_PSCI_VERSION_1_1; Maybe we could implement SYSTEM_RESET2, SYSTEM_OFF2 and MEM_PROTECT* and bump to QEMU_PSCI_VERSION_1_3. Or add UNIMP stubs and here directly start with: } else if (whpx_enabled()) { cpu->psci_version = QEMU_PSCI_VERSION_1_3; > }