{"id":2196688,"url":"http://patchwork.ozlabs.org/api/1.0/patches/2196688/?format=json","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.0/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260216034432.23912-7-richard.henderson@linaro.org>","date":"2026-02-16T03:44:25","name":"[RFC,06/13] target/arm: Drop kvm_arm_sve_supported","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"87e4ce4dbc201df5b8aea1b41d79dfeef877b2da","submitter":{"id":72104,"url":"http://patchwork.ozlabs.org/api/1.0/people/72104/?format=json","name":"Richard Henderson","email":"richard.henderson@linaro.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260216034432.23912-7-richard.henderson@linaro.org/mbox/","series":[{"id":492243,"url":"http://patchwork.ozlabs.org/api/1.0/series/492243/?format=json","date":"2026-02-16T03:44:19","name":"target/arm: Support SME for KVM","version":1,"mbox":"http://patchwork.ozlabs.org/series/492243/mbox/"}],"check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2196688/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=xzsnB34S;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)"],"Received":["from lists.gnu.org (lists.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fDpbB1Rclz1xpl\n\tfor ; Mon, 16 Feb 2026 14:45:58 +1100 (AEDT)","from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from )\n\tid 1vrpXa-0002Xs-Qz; Sun, 15 Feb 2026 22:44:54 -0500","from eggs.gnu.org ([2001:470:142:3::10])\n by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from )\n id 1vrpXZ-0002XO-DQ\n for qemu-devel@nongnu.org; Sun, 15 Feb 2026 22:44:53 -0500","from mail-pl1-x631.google.com ([2607:f8b0:4864:20::631])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128)\n (Exim 4.90_1) (envelope-from )\n id 1vrpXY-0002Qg-0Q\n for qemu-devel@nongnu.org; Sun, 15 Feb 2026 22:44:53 -0500","by mail-pl1-x631.google.com with SMTP id\n d9443c01a7336-2a79ded11a2so17386605ad.3\n for ; Sun, 15 Feb 2026 19:44:51 -0800 (PST)","from stoup.. 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helo=mail-pl1-x631.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,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n 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":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"This function has only one real use, so inline it and\ndrop the stubs.\n\nSigned-off-by: Richard Henderson \n---\n target/arm/kvm_arm.h | 12 ------------\n target/arm/kvm-stub.c | 5 -----\n target/arm/kvm.c | 9 +--------\n 3 files changed, 1 insertion(+), 25 deletions(-)","diff":"diff --git a/target/arm/kvm_arm.h b/target/arm/kvm_arm.h\nindex 97549766ea..cee06b5f0b 100644\n--- a/target/arm/kvm_arm.h\n+++ b/target/arm/kvm_arm.h\n@@ -176,13 +176,6 @@ bool kvm_arm_aarch32_supported(void);\n */\n bool kvm_arm_pmu_supported(void);\n \n-/**\n- * kvm_arm_sve_supported:\n- *\n- * Returns true if KVM can enable SVE and false otherwise.\n- */\n-bool kvm_arm_sve_supported(void);\n-\n /**\n * kvm_arm_mte_supported:\n *\n@@ -208,11 +201,6 @@ static inline bool kvm_arm_pmu_supported(void)\n return false;\n }\n \n-static inline bool kvm_arm_sve_supported(void)\n-{\n- return false;\n-}\n-\n static inline bool kvm_arm_mte_supported(void)\n {\n return false;\ndiff --git a/target/arm/kvm-stub.c b/target/arm/kvm-stub.c\nindex f2de36aef3..f1d0ca09e6 100644\n--- a/target/arm/kvm-stub.c\n+++ b/target/arm/kvm-stub.c\n@@ -37,11 +37,6 @@ bool kvm_arm_pmu_supported(void)\n return false;\n }\n \n-bool kvm_arm_sve_supported(void)\n-{\n- return false;\n-}\n-\n bool kvm_arm_mte_supported(void)\n {\n return false;\ndiff --git a/target/arm/kvm.c b/target/arm/kvm.c\nindex 464356989b..7724609b28 100644\n--- a/target/arm/kvm.c\n+++ b/target/arm/kvm.c\n@@ -246,7 +246,6 @@ static int get_host_cpu_reg(int fd, ARMHostCPUFeatures *ahcf,\n \n static uint32_t kvm_arm_sve_get_vls(int fd)\n {\n- /* Only call this function if kvm_arm_sve_supported() returns true. */\n uint64_t vls[KVM_ARM64_SVE_VLS_WORDS];\n struct kvm_one_reg reg = {\n .id = KVM_REG_ARM64_SVE_VLS,\n@@ -298,7 +297,7 @@ static bool kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)\n * Ask for SVE if supported, so that we can query ID_AA64ZFR0,\n * which is otherwise RAZ.\n */\n- sve_supported = kvm_arm_sve_supported();\n+ sve_supported = kvm_check_extension(kvm_state, KVM_CAP_ARM_SVE);\n if (sve_supported) {\n init.features[0] |= 1 << KVM_ARM_VCPU_SVE;\n }\n@@ -1909,11 +1908,6 @@ bool kvm_arm_el2_supported(void)\n return kvm_check_extension(kvm_state, KVM_CAP_ARM_EL2);\n }\n \n-bool kvm_arm_sve_supported(void)\n-{\n- return kvm_check_extension(kvm_state, KVM_CAP_ARM_SVE);\n-}\n-\n bool kvm_arm_mte_supported(void)\n {\n return kvm_check_extension(kvm_state, KVM_CAP_ARM_MTE);\n@@ -1968,7 +1962,6 @@ int kvm_arch_init_vcpu(CPUState *cs)\n cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_PMU_V3;\n }\n if (cpu_isar_feature(aa64_sve, cpu)) {\n- assert(kvm_arm_sve_supported());\n cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_SVE;\n }\n if (cpu_isar_feature(aa64_pauth, cpu)) {\n","prefixes":["RFC","06/13"]}