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Mon, 11 Aug 2025 10:07:07 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Miguel Luis , Richard Henderson , kvm@vger.kernel.org, Peter Maydell , Paolo Bonzini , Haibo Xu , Mohamed Mediouni , Mark Burton , Alexander Graf , Claudio Fontana , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Mads Ynddal , Eric Auger , qemu-arm@nongnu.org, Cameron Esfahani , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [RFC PATCH 10/11] target/arm/hvf: Consider EL2 acceleration for Silicon M3+ chipsets Date: Mon, 11 Aug 2025 19:06:10 +0200 Message-ID: <20250811170611.37482-11-philmd@linaro.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250811170611.37482-1-philmd@linaro.org> References: <20250811170611.37482-1-philmd@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable 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: pass client-ip=2a00:1450:4864:20::332; envelope-from=philmd@linaro.org; helo=mail-wm1-x332.google.com X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, DKIM_INVALID=0.1, DKIM_SIGNED=0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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 @linaro.org) X-ZM-MESSAGEID: 1754932133643116600 Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- Just a proof-of-concept... --- target/arm/hvf/hvf.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c index 778dc3cedf7..d74f576b103 100644 --- a/target/arm/hvf/hvf.c +++ b/target/arm/hvf/hvf.c @@ -1000,6 +1000,9 @@ uint32_t hvf_arm_get_max_ipa_bit_size(void) =20 bool arm_hw_accel_cpu_feature_supported(enum arm_features feat, bool can_e= mulate) { + hv_return_t ret; + bool supported; + if (!hvf_enabled()) { return false; } @@ -1011,6 +1014,9 @@ bool arm_hw_accel_cpu_feature_supported(enum arm_feat= ures feat, bool can_emulate case ARM_FEATURE_GENERIC_TIMER: return true; case ARM_FEATURE_EL2: + ret =3D hv_vm_config_get_el2_supported(&supported); + assert_hvf_ok(ret); + return supported; case ARM_FEATURE_EL3: return false; default: --=20 2.49.0