From nobody Sun Apr 12 00:55:50 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1772801196; cv=none; d=zohomail.com; s=zohoarc; b=XEsDygZZgpR7MqKXxN96uEoDqP+a2yaNII8YUu4h/HMV7RzsTxeUY6OHJqQl4aWN+T+9GF9R+jIA7Vlgwe6IWtCdaXQ+1mynnevvdPV9Qn2kCxfQF7lqLCODoZNZKKvDvJpIkWme1S3kQw+jkVhtt51+TCLbaTvPJW8qHBeGJHM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1772801196; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=rgJhg7qH7nVlrkZGD5+UkseCs4/YICAqtAS92mBbMqA=; b=HX1u6Hmz5nCzHXj9bzhF9rSfzWzAnAlNSmbFcx2OIjFEA/cTITEq9pSlQ/rQZjJL/PJdX+4TmZI1vVpdLPqbi+AsaKZ4UX7JARFZtwy9bzqdDoHFsfO03d9MaoWZSTwF807COB4poqDCl36TfHI7NGP8X/Aaok4BnePKgkn8P9s= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1772801196830296.68184107279774; Fri, 6 Mar 2026 04:46:36 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vyUYr-0004Qv-Fy; Fri, 06 Mar 2026 07:45:45 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vyUYn-0004PT-Mz for qemu-devel@nongnu.org; Fri, 06 Mar 2026 07:45:41 -0500 Received: from mail-wm1-x329.google.com ([2a00:1450:4864:20::329]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1vyUYl-0004KX-3l for qemu-devel@nongnu.org; Fri, 06 Mar 2026 07:45:40 -0500 Received: by mail-wm1-x329.google.com with SMTP id 5b1f17b1804b1-4836d4c26d3so72753685e9.2 for ; Fri, 06 Mar 2026 04:45:35 -0800 (PST) Received: from [127.0.1.1] (ppp-2-86-215-248.home.otenet.gr. [2.86.215.248]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-485276b7571sm32301335e9.13.2026.03.06.04.45.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 Mar 2026 04:45:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1772801134; x=1773405934; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=rgJhg7qH7nVlrkZGD5+UkseCs4/YICAqtAS92mBbMqA=; b=vZ1u3QXONfCUSMmMV2eCBdUze9bKfTRU4VFFfnNmxB5nQ8LeWncrBaCmS3YU6nm/ra Pf5KdNrOtYi2BrqFQP5VCs2PBssHnKVJzdLwMFT+4Cdl9d3MI+qnUjcgr2/fipA+mihe 3ottDkiFhENXJMzvUWdV6+RohlJs6IAMAcN/F8/VHODTg6Audj/2b0r6rVhSwcS3RIH8 lCP7r+PPRT+jgIQDNYMbzkFFpET4Hz0ZNZzIn/830dKhYECwo7kP9pi5XIHfXU2aawjl cZlPJLB/hwaQMAP7X6FZDChL6Blw+oEu7za33D7xBwdqji62QhDdpT2eElP39qCKbyz6 hiiQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1772801134; x=1773405934; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=rgJhg7qH7nVlrkZGD5+UkseCs4/YICAqtAS92mBbMqA=; b=UNfkuWsFi9n8thuTEXqXMBOUXae4glv9h8DXYmiqc7rrxR/lE4P98hAY/jurxqRDny l5Tfy/zpQHSUdW/IOjqK7L5bOJ1WGKPgVwdbLTmZRHeQWwZ+BunOcG1bTF98xjBYxBRr 1NzZ8SNmso1BpJ1eXT4FAcPGicHcWFBrFYnjI+1AlUUXM5P012FBbfq09tyXTDl9ccbN K6OPsgVYd6yKVK+qx/Um6wqV4uMjQCAU/AdJcV0G+ABORbfWT80KCyr69r9ZbWiDV6Ls YNXdlRlB2jooXEbMNUuneKAowmI6Dr2u3UTRutYBRF8eIBgKmq+0NMQjiWd9DjTQ10Hg PzZg== X-Gm-Message-State: AOJu0YxW3Edh8gVpZjfioZfDvxt2yjMZH4Q6n5rM30zy7EC0Jt2Gi2QJ STNFIfIlH1U8RlhiWaKzykZuJjgWeuh8RIQtgmD6hHGuT9UbY/3acJsSAc78FI5mzNg= X-Gm-Gg: ATEYQzzzAd4eygsvQebCuCTlo19C2c4BMMzyPvDlmGBjyaTLllpigwk/3sT/Qz+cdOh FEC8l28iS3D+F1H6uW3RbfnUYO0CpvhDYvJd4YsBZjSMk0W2BVZqaxKd98FoCQsaF0x4SUSQQeN M3a2pPiMzv08GjAPMC5gNcxeGBO3g6oByMrYfSKdWLIw7aznIHsFeCrH0vjvFI3yXQB77hexC3m Pp+cZw845kqWoc/glt2RqFrclAYb07nxVkjJQc7iq69thTfX+0Gi40Egr88n2KZpb1Yi0Lhwunf 1ks2TMVJvvcJGxuTIDS87BnKcqkcuL0Q2JaSbAjoAAG8zYHhjKU7gJMEw3HcBruC6xHgk9p7j/i kIHctgIx4I+3VOlvC3jD1ynV4/ERbXB2PUTI7x6cWupdDFIgWO1YYLekYlETKuARyE8SoEt05RT GSzi5nGtwx6OBxMlaFQzLJHqCDDUYer0lsdebpIJCWOLFQXuNb0/dv90+bUwxbJCrk6dIrF7qK4 cX8MjOk/GOY4uJ/WB/WcA4nFEz/xzSPBxeNxRo= X-Received: by 2002:a05:600c:5303:b0:477:c478:46d7 with SMTP id 5b1f17b1804b1-4852695aa55mr32084375e9.22.1772801134525; Fri, 06 Mar 2026 04:45:34 -0800 (PST) From: Manos Pitsidianakis Date: Fri, 06 Mar 2026 14:45:25 +0200 Subject: [PATCH v7 2/2] hvf/arm: expose FEAT_SME2 to guest if available MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260306-sme2-hvf-v7-2-e72eeda41ed3@linaro.org> References: <20260306-sme2-hvf-v7-0-e72eeda41ed3@linaro.org> In-Reply-To: <20260306-sme2-hvf-v7-0-e72eeda41ed3@linaro.org> To: qemu-devel@nongnu.org Cc: Richard Henderson , =?utf-8?q?Phil_Mathieu-Daud=C3=A9?= , Alexander Graf , Mads Ynddal , Peter Maydell , qemu-arm@nongnu.org, Mohamed Mediouni , Manos Pitsidianakis X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=3452; i=manos.pitsidianakis@linaro.org; h=from:subject:message-id; bh=x4PKX4z2dqcNBF29jWpK40RoN6KTiGbQR3rlp9t7i6w=; b=LS0tLS1CRUdJTiBQR1AgTUVTU0FHRS0tLS0tCgpvd0VCYlFLUy9aQU5Bd0FLQVhjcHgzQi9mZ 25RQWNzbVlnQnBxc3hyRGNndjlvSE40cHQzUmZ3Ujh4bVJldkhlCnZwZlRBcHNGK0hTYjdsUUtC M3VKQWpNRUFBRUtBQjBXSVFUTVhCdE9SS0JXODRkd0hSQjNLY2R3ZjM0SjBBVUMKYWFyTWF3QUt DUkIzS2Nkd2YzNEowS3plRC85azhoTitmTWswRDVvRXZCM3lrRnB1M3o0RjRPVHVnZldLM0w3cQ pvTGZ2UjUySXh4b1Y4WkdlMlA3RDhiZjgveHhNdWhrQkl6aTdTTWZSUE45d3R0QWJSSmVFR1lRN 21jVWpJaS9YCmM5UjdIS2ZmOEhYTklXVFdIWFBBVE1rZ1BxbFcwM05uZWpNekkrZnJoaFhTSUhi K24zYWFGOHhlMXAyN01HNWYKZnV4c0UzM3ZWVXlRTUV4VGQ1WHdLb2Yvd3MvUGpCRTdwRVpHbzV pTEU0U0tTTHNkV1Y4TFBBK0RhZHJPT3NsYwppcmc5L3FobGZvSXo5WUVjZEZZUmhKVTV1UnJhSW 9YZVcxVlB1NGl5ODNBaFhaZlFrV21JaHBzK3RsTXdmcDV6CjFabkhrWlJKcW5tdUdyOWpYQmEwb Wt6bzlhVElrbnh1cDBSVDRPWERpdnlDZ05iekxpRHlWMWJEYkYwYjF2L2IKMzFOU2I4cE1QUE5L TTR3MlpHdXIxVS85dkg4cDBidVlxeHppTFBKTU1zcU03aHNXekdhTGZyQVNXNDZFRmRxSwovRkx rNCsrRzZoRE52ZmdyU242SlRZNWRtUkRPd2hCZ3VCeHZEZmNSb1BhNnZFd2c4cHZxMXlSN3FIVF g3RkFrClJOb3crUjJiYUx3d1h5YXVKNS96VjM3T0JJU2VzbGpzSDdNNzFKeHo4QWhabENnanhoO ElveHFlZkVMUTdSRDMKSUYwRkMvL0t1eWRvTFhucDNMWGtvWXZ6V2lPdXRlZGdWYWhkNTJiaENQ enRBWDlFWHdCZlpCa0VucmxwRlhUcgpkRVFNc0w0bnB4TElwdDl2TGFyWWFvanFiMmsvazNhZEp tOGRFdFJibWZyQXo4YXlrVEZYd1k2MGdPbmExWGFGClJjbU1Bdz09Cj1PaVJzCi0tLS0tRU5EIF BHUCBNRVNTQUdFLS0tLS0K X-Developer-Key: i=manos.pitsidianakis@linaro.org; a=openpgp; fpr=7C721DF9DB3CC7182311C0BF68BC211D47B421E1 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::329; envelope-from=manos.pitsidianakis@linaro.org; helo=mail-wm1-x329.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: 1772801198503154100 Starting from M4 cores and MacOS 15.2 SDK, HVF can virtualise FEAT_SME2. Signed-off-by: Manos Pitsidianakis --- target/arm/hvf/hvf.c | 36 +++++++++++++++++++++++------------- 1 file changed, 23 insertions(+), 13 deletions(-) diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c index 21b16dfe429762c66714a4f04af0833033614c63..5fc8f6bbbd987535f907f3cee8c= 170600c130832 100644 --- a/target/arm/hvf/hvf.c +++ b/target/arm/hvf/hvf.c @@ -315,6 +315,7 @@ typedef struct ARMHostCPUFeatures { uint64_t features; uint64_t midr; uint32_t reset_sctlr; + uint32_t sme_vq_supported; const char *dtb_compatible; } ARMHostCPUFeatures; =20 @@ -1106,6 +1107,24 @@ static bool hvf_arm_get_host_cpu_features(ARMHostCPU= Features *ahcf) r |=3D hv_vcpu_config_get_feature_reg(config, regs[i].reg, &host_isar.idregs[regs[i].inde= x]); } + + if (__builtin_available(macOS 15.2, *)) { + static const struct sme_isar_regs { + hv_feature_reg_t reg; + ARMIDRegisterIdx index; + } sme_regs[] =3D { + { HV_FEATURE_REG_ID_AA64SMFR0_EL1, ID_AA64SMFR0_EL1_IDX }, + { HV_FEATURE_REG_ID_AA64ZFR0_EL1, ID_AA64ZFR0_EL1_IDX }, + }; + + if (hvf_arm_sme2_supported()) { + for (i =3D 0; i < ARRAY_SIZE(sme_regs); i++) { + r |=3D hv_vcpu_config_get_feature_reg(config, sme_regs[i].= reg, + &host_isar.idregs[sme_= regs[i].index]); + } + } + } + os_release(config); =20 /* @@ -1121,19 +1140,6 @@ static bool hvf_arm_get_host_cpu_features(ARMHostCPU= Features *ahcf) =20 clamp_id_aa64mmfr0_parange_to_ipa_size(&host_isar); =20 - /* - * Disable SME, which is not properly handled by QEMU hvf yet. - * To allow this through we would need to: - * - make sure that the SME state is correctly handled in the - * get_registers/put_registers functions - * - get the SME-specific CPU properties to work with accelerators - * other than TCG - * - fix any assumptions we made that SME implies SVE (since - * on the M4 there is SME but not SVE) - */ - SET_IDREG(&host_isar, ID_AA64PFR1, - GET_IDREG(&host_isar, ID_AA64PFR1) & ~R_ID_AA64PFR1_SME_MASK= ); - ahcf->isar =3D host_isar; =20 /* @@ -1148,6 +1154,8 @@ static bool hvf_arm_get_host_cpu_features(ARMHostCPUF= eatures *ahcf) */ ahcf->reset_sctlr |=3D 0x00800000; =20 + ahcf->sme_vq_supported =3D hvf_arm_sme2_supported() ? hvf_arm_sme2_get= _svl() : 0; + /* Make sure we don't advertise AArch32 support for EL0/EL1 */ if ((GET_IDREG(&host_isar, ID_AA64PFR0) & 0xff) !=3D 0x11) { return false; @@ -1199,6 +1207,7 @@ void hvf_arm_set_cpu_features_from_host(ARMCPU *cpu) cpu->env.features =3D arm_host_cpu_features.features; cpu->midr =3D arm_host_cpu_features.midr; cpu->reset_sctlr =3D arm_host_cpu_features.reset_sctlr; + cpu->sme_vq.supported =3D arm_host_cpu_features.sme_vq_supported; } =20 void hvf_arch_vcpu_destroy(CPUState *cpu) @@ -1343,6 +1352,7 @@ int hvf_arch_init_vcpu(CPUState *cpu) arm_cpu->isar.idregs[ID_AA64MMFR0_EL1_IDX]); assert_hvf_ok(ret); =20 + aarch64_add_sme_properties(OBJECT(cpu)); return 0; } =20 --=20 2.47.3