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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1750344677; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=qBJvlCS+bjfhWfa+jzKmV6Al9Zocv6O1Di26gkSB0hw=; b=WxoS6RX7N3G4I7gqBFIvTmfXjZj8iVwQGcWemqh40r2br61hgHRgRtc0or5UegwPCC8VDl 1GpF1VM7O8F7v+Pnb/rsVPsHAYPna72k3SnPtINLO9JhdYjnDialhPg73IZp+szyC3SByi 5QxzfsZP1mT+eUPws6pIMx1VZZbQOTQ= X-MC-Unique: dK92cJO4OJWBZCAABF_DjA-1 X-Mimecast-MFC-AGG-ID: dK92cJO4OJWBZCAABF_DjA_1750344672 From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, miguel.luis@oracle.com, peter.maydell@linaro.org, richard.henderson@linaro.org, maz@kernel.org, gkulkarni@amperecomputing.com, gankulkarni@os.amperecomputing.com Cc: hi@alyssa.is Subject: [PATCH v6 3/5] target/arm/kvm: Add helper to detect EL2 when using KVM Date: Thu, 19 Jun 2025 16:50:01 +0200 Message-ID: <20250619145047.1669471-4-eric.auger@redhat.com> In-Reply-To: <20250619145047.1669471-1-eric.auger@redhat.com> References: <20250619145047.1669471-1-eric.auger@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 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=170.10.129.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -39 X-Spam_score: -4.0 X-Spam_bar: ---- X-Spam_report: (-4.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.897, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1750344779719116600 From: Haibo Xu Introduce query support for KVM_CAP_ARM_EL2. Signed-off-by: Haibo Xu Signed-off-by: Miguel Luis Signed-off-by: Eric Auger Reviewed-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- target/arm/kvm_arm.h | 7 +++++++ target/arm/kvm-stub.c | 5 +++++ target/arm/kvm.c | 5 +++++ 3 files changed, 17 insertions(+) diff --git a/target/arm/kvm_arm.h b/target/arm/kvm_arm.h index 7dc83caed5..b4cad05155 100644 --- a/target/arm/kvm_arm.h +++ b/target/arm/kvm_arm.h @@ -191,6 +191,13 @@ bool kvm_arm_sve_supported(void); */ bool kvm_arm_mte_supported(void); =20 +/** + * kvm_arm_el2_supported: + * + * Returns true if KVM can enable EL2 and false otherwise. + */ +bool kvm_arm_el2_supported(void); + /** * kvm_arm_get_max_vm_ipa_size: * @ms: Machine state handle diff --git a/target/arm/kvm-stub.c b/target/arm/kvm-stub.c index 34e57fab01..c93462c5b9 100644 --- a/target/arm/kvm-stub.c +++ b/target/arm/kvm-stub.c @@ -47,6 +47,11 @@ bool kvm_arm_mte_supported(void) return false; } =20 +bool kvm_arm_el2_supported(void) +{ + return false; +} + /* * These functions should never actually be called without KVM support. */ diff --git a/target/arm/kvm.c b/target/arm/kvm.c index 74fda8b809..54e50796b4 100644 --- a/target/arm/kvm.c +++ b/target/arm/kvm.c @@ -1769,6 +1769,11 @@ bool kvm_arm_aarch32_supported(void) return kvm_check_extension(kvm_state, KVM_CAP_ARM_EL1_32BIT); } =20 +bool kvm_arm_el2_supported(void) +{ + return kvm_check_extension(kvm_state, KVM_CAP_ARM_EL2); +} + bool kvm_arm_sve_supported(void) { return kvm_check_extension(kvm_state, KVM_CAP_ARM_SVE); --=20 2.49.0