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[81.2.115.145]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-435b1e71503sm43080090f8f.25.2026.01.27.07.48.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Jan 2026 07:48:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1769528898; x=1770133698; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=1P4Fp9YhrD/gyZOyp6pwmRmOxlP0nYVwqlUrVXaEAAU=; b=exrVxyOYrRx0nRiPxG28w1tm0kqlsUWeuSZg6rRfjKB+X2PdAg42JFiOIcE5XO6QZO q8ErqWA2vg6omV5Dc6EMWzNdIVNVydXE8iHUTXaMEbzoy6EICvF6wWfJnFdN3RoYnOZy /8Yna8Yw7yu4iy619aqI/LWF83WP2vs0+LBfkJp5fe7f+A36ww6WLNQXVvjVDantqyAg 2ow4ZngcUTfq6YrGNZlUai46WEN/cHnDt4on0XykA6iKi1ya9AXhmP4WPXKbsRlUHoaZ +tkzPcLkpGCBh70sTiB0aai6JWPGSpdgoh5TBJr6oC7xzerYhiwCjIDvBPuJu56pCCLs 1vIQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769528898; x=1770133698; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=1P4Fp9YhrD/gyZOyp6pwmRmOxlP0nYVwqlUrVXaEAAU=; b=GiAjgMgsaTynakNta5Qcxl2yg/abrc8PrukGpc+lnVA2qHBnagj+a0qy4cHDk6oNCX 1+RwuiEEnoevF/gE7K4IF94IlnQgt8sRMMz5DI6BuAX0heflwlKQxteR5RMyEHRBfjv+ L9AihJQJwcuL0Rny9Pq5+Dy3/8184ff3wyeIucodpHPgKeQGBd/nwzXEY8D0TtZTlOaC qBuhT1FnuxOnb9rxIujwE6h5iE07Q6yPyCTpz1xE41bv4JU4L4apNMtSlg352RRxc2J+ BZXEGz/3TZ1L5MI3ey/xd+wNUq9NW1drqrNe0tXvSo6v2///mTvIaQc/zMyoenAlvy3M yvUQ== X-Forwarded-Encrypted: i=1; AJvYcCVlEe4d9slZYxs40ZNucrcuiI0SU2nsBOZquJgO19mDsi0zx/X+zuL6bZD34U8LiV4TwhJBYuWhWiPX@nongnu.org X-Gm-Message-State: AOJu0YxE6H4idwdBF6jFUCFu13xHukHlWDjfF+kjpkVyV5ZZ4yn0GBbL zEcc4T+r44vHxcn8+vxjNkKwGfKqWkxmJmD16KfUt115Hu9gH3dxsT2DFjADrrhuERw= X-Gm-Gg: AZuq6aIv+ltKej/EmMfmp50j03I1AHk6DEzHRGa5J48lnD5VQjFMbODts9xbdW3vtvN U4tDSxA8cI+vX6O4DKTfaOB4QwDnTLIL6vgv9xtuukW1f9LohtlMGwIm4S1P0WgYRp+bvBwsmNi 7vWW0UscdMD0plMuATvNKhjwE+Gr47Z0MHZpz19NY3o1X5gBaXCsKebLhkAqvETU9gXVvH0nIaE 8H7sLFaoKjwKSAnCoeczqa+fO0N0xnGc/CDXPfF3bEJGc1nYGNA5YOj3J72GDlXZfpYr83xSgbY 8LUjCAJbQE+gTJoEB4XjulYsNPY2Ho6hYGt8zbfP8aZTVZfng+c+w+/Ewnju+5ho5gKbQGLSgRI dmFEK+ZXMDBYmQpwkc/Y24pOatIhH/gSQtn4kYJtC3bArOOnyQSfinYp9dN/4Bvg6kTM+m7IDuT Zwd85/ZrWLQJjqcXiZVEbLfw9w+/UTZQ== X-Received: by 2002:a05:6000:1786:b0:435:729a:eb6f with SMTP id ffacd0b85a97d-435dd032b63mr3359056f8f.19.1769528897999; Tue, 27 Jan 2026 07:48:17 -0800 (PST) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Cc: Richard Henderson , Manos Pitsidianakis Subject: [RFC PATCH 2/3] target/arm: Handle SME-without-SVE on change of EL Date: Tue, 27 Jan 2026 15:48:12 +0000 Message-ID: <20260127154813.591744-3-peter.maydell@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260127154813.591744-1-peter.maydell@linaro.org> References: <20260127154813.591744-1-peter.maydell@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=2a00:1450:4864:20::431; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x431.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=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: 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: 1769528958571158500 Content-Type: text/plain; charset="utf-8" aarch64_sve_change_el() currently assumes that SME implies SVE, and will return without doing anything if SVE is not implemented, skipping a possible requirement to change the vector register state because the SME vector length has changed. Update it to handle SME also. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson --- target/arm/helper.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target/arm/helper.c b/target/arm/helper.c index a3dd84a2d6..bf3aca18b1 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -10128,8 +10128,8 @@ void aarch64_sve_change_el(CPUARMState *env, int ol= d_el, int old_len, new_len; bool old_a64, new_a64, sm; =20 - /* Nothing to do if no SVE. */ - if (!cpu_isar_feature(aa64_sve, cpu)) { + /* Nothing to do if no SVE or SME. */ + if (!cpu_isar_feature(aa64_sve, cpu) && !cpu_isar_feature(aa64_sme, cp= u)) { return; } =20 --=20 2.43.0