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([2401:d002:dc0f:2100:4a1:428a:70f2:5844]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ad1aadca84sm53294155ad.70.2026.02.15.19.44.43 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 15 Feb 2026 19:44:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1771213485; x=1771818285; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=i0CkMEqHWZZBF7b/EDsRH9ZprXMms0dNpE5IJYi11qg=; b=rgPFn0YQE/4g1NAjK/s8UMKGOwQZ9o01TYXuhcv+CZ4OFEPE3DNzfP5gITVIl577Xs 7zglWArlpHMTw3docllzI2o9sVob8i1UcCYxnhNVrjuq994tlCUZJmruwF2pIw/0TlT+ j3f+A79lmJKbokItKew8L/tqQ6KHqwnsaNajd9CqEux4YYb8q3CQGmdq5+r4MNTl7509 uwDSt7c0ybNdfAVDajkLCYg08M5VLWhbUIyCT3VyYURN46mDUKWyycYXLkK6czETPXzt ER4+wnvFCP4HC8qzC9hJ8J+UGoYPyIPDkZTD1EXZzvKtiPBf4kU/pF4wJ0rq7NiceAsB mBeQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1771213485; x=1771818285; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=i0CkMEqHWZZBF7b/EDsRH9ZprXMms0dNpE5IJYi11qg=; b=BijTVqMz11VxwXWCJ5V9+b+iR8xq3WKx8rD/fQdB2eg7TpWm9V2rDNd8pDFJZVFb2j 65SmOWjOW/kzKj6lXVojNNu1vyPg+eqX5XF8YN1jZ5nNv7JBuYvMhY66eXNhcWPO/UII tQcfxu+e+lx5WBQCvmJZOznP0Et7uF/Ubq2CqG9NSUsjoBvKHLtfVoIbDajBx6NIZ0Kf tMc4wVS4v7JHSev133jAPtbxP0yaoxVMCeDb0m32dYSLgiyiB0L+M3BrNHXSTruQkZdW 3o7jEvN4dcUcX7ekTTY+U8alnytZuC6ahPOyQKpupOl33LMLBvivhCSum4rPDruwnaWh hZsw== X-Gm-Message-State: AOJu0YzlcjHCxrudRq4r438IX4j+EYUbsRyacBQ3W6O8QdyQF86j3+xb LIn7obC8c+8RE0xFfLvy0G+lURjtpI1lXo/67AkbGMiev8UUL/A1VfBnTveg5pXH9oRA38SR+5u kLKxQJ+Y= X-Gm-Gg: AZuq6aImATcNd30SOWFM2PJ7kr9uY8f6RadZ9dFSbtAyBa+lrJxMiQBCdXOJylkCElI UnoZtmGy7hZItQ9Kk/12pFKgh21wEpJsiMhxWsj7TwN0KQMQPUx+Shv3B20H6BQMUnKVr+HEQZ6 Uey2zkhWv1+tq4SqzkdX0G5HNVUYULRjMqm8ErHJdFa5aMkLTMR6s06TaLb9ZL2XjxCRm9gvxPo 2LdZx6K51mCKfeqi/LLXZ5TgYdY6RSV++Xum4uOgp7pDMr6hC9iYEpKVgN1o/JnXXddZ7yzC72T MFe0ylmp9A9IRSTt8LEpWGe1+YRsfGD6H1KirkwgZOMuR2bovDvn0TgdSn8TBxqjLYRk3U/gycl uBVjdKt8eUf/tn9qQV8iCY0u9/z45nXxbDBxXf6jy5A/VAX3f2mJcndPjViXTQCiY1fDvGGEzQG 351H4umW8xTTx//nZtkWuKmmGfh22qDIuT X-Received: by 2002:a17:902:d48e:b0:2a9:2942:e15d with SMTP id d9443c01a7336-2ab4cf4f447mr115964305ad.5.1771213484686; Sun, 15 Feb 2026 19:44:44 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [RFC PATCH 03/13] target/arm: Move kvm_arm_sve_get_vls within kvm.c Date: Mon, 16 Feb 2026 13:44:22 +1000 Message-ID: <20260216034432.23912-4-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260216034432.23912-1-richard.henderson@linaro.org> References: <20260216034432.23912-1-richard.henderson@linaro.org> MIME-Version: 1.0 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=2607:f8b0:4864:20::635; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x635.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=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development 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: 1771213531412158500 Content-Type: text/plain; charset="utf-8" Prepare to adjust the invocation point and visibility. Signed-off-by: Richard Henderson Reviewed-by: Peter Maydell --- target/arm/kvm.c | 108 +++++++++++++++++++++++------------------------ 1 file changed, 54 insertions(+), 54 deletions(-) diff --git a/target/arm/kvm.c b/target/arm/kvm.c index ded582e0da..e0fd79b78c 100644 --- a/target/arm/kvm.c +++ b/target/arm/kvm.c @@ -243,6 +243,60 @@ static int get_host_cpu_reg(int fd, ARMHostCPUFeatures= *ahcf, return ret; } =20 +uint32_t kvm_arm_sve_get_vls(ARMCPU *cpu) +{ + /* Only call this function if kvm_arm_sve_supported() returns true. */ + static uint64_t vls[KVM_ARM64_SVE_VLS_WORDS]; + static bool probed; + uint32_t vq =3D 0; + int i; + + /* + * KVM ensures all host CPUs support the same set of vector lengths. + * So we only need to create the scratch VCPUs once and then cache + * the results. + */ + if (!probed) { + struct kvm_vcpu_init init =3D { + .target =3D -1, + .features[0] =3D (1 << KVM_ARM_VCPU_SVE), + }; + struct kvm_one_reg reg =3D { + .id =3D KVM_REG_ARM64_SVE_VLS, + .addr =3D (uint64_t)&vls[0], + }; + int fdarray[3], ret; + + probed =3D true; + + if (!kvm_arm_create_scratch_host_vcpu(fdarray, &init)) { + error_report("failed to create scratch VCPU with SVE enabled"); + abort(); + } + ret =3D ioctl(fdarray[2], KVM_GET_ONE_REG, ®); + kvm_arm_destroy_scratch_host_vcpu(fdarray); + if (ret) { + error_report("failed to get KVM_REG_ARM64_SVE_VLS: %s", + strerror(errno)); + abort(); + } + + for (i =3D KVM_ARM64_SVE_VLS_WORDS - 1; i >=3D 0; --i) { + if (vls[i]) { + vq =3D 64 - clz64(vls[i]) + i * 64; + break; + } + } + if (vq > ARM_MAX_VQ) { + warn_report("KVM supports vector lengths larger than " + "QEMU can enable"); + vls[0] &=3D MAKE_64BIT_MASK(0, ARM_MAX_VQ); + } + } + + return vls[0]; +} + static bool kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf) { /* Identify the feature bits corresponding to the host CPU, and @@ -1886,60 +1940,6 @@ bool kvm_arm_mte_supported(void) =20 QEMU_BUILD_BUG_ON(KVM_ARM64_SVE_VQ_MIN !=3D 1); =20 -uint32_t kvm_arm_sve_get_vls(ARMCPU *cpu) -{ - /* Only call this function if kvm_arm_sve_supported() returns true. */ - static uint64_t vls[KVM_ARM64_SVE_VLS_WORDS]; - static bool probed; - uint32_t vq =3D 0; - int i; - - /* - * KVM ensures all host CPUs support the same set of vector lengths. - * So we only need to create the scratch VCPUs once and then cache - * the results. - */ - if (!probed) { - struct kvm_vcpu_init init =3D { - .target =3D -1, - .features[0] =3D (1 << KVM_ARM_VCPU_SVE), - }; - struct kvm_one_reg reg =3D { - .id =3D KVM_REG_ARM64_SVE_VLS, - .addr =3D (uint64_t)&vls[0], - }; - int fdarray[3], ret; - - probed =3D true; - - if (!kvm_arm_create_scratch_host_vcpu(fdarray, &init)) { - error_report("failed to create scratch VCPU with SVE enabled"); - abort(); - } - ret =3D ioctl(fdarray[2], KVM_GET_ONE_REG, ®); - kvm_arm_destroy_scratch_host_vcpu(fdarray); - if (ret) { - error_report("failed to get KVM_REG_ARM64_SVE_VLS: %s", - strerror(errno)); - abort(); - } - - for (i =3D KVM_ARM64_SVE_VLS_WORDS - 1; i >=3D 0; --i) { - if (vls[i]) { - vq =3D 64 - clz64(vls[i]) + i * 64; - break; - } - } - if (vq > ARM_MAX_VQ) { - warn_report("KVM supports vector lengths larger than " - "QEMU can enable"); - vls[0] &=3D MAKE_64BIT_MASK(0, ARM_MAX_VQ); - } - } - - return vls[0]; -} - static int kvm_arm_sve_set_vls(ARMCPU *cpu) { uint64_t vls[KVM_ARM64_SVE_VLS_WORDS] =3D { cpu->sve_vq.map }; --=20 2.43.0