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([177.146.137.168]) by smtp.gmail.com with ESMTPSA id 00721157ae682-79a7141eb65sm28159417b3.21.2026.03.18.19.26.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Mar 2026 19:26:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1773887189; x=1774491989; 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=OUjOedTJILydQY7f/OfkEk8wUHENkhFnJJVe3/bR9qI=; b=X7tUH0O6MNGJ/D9GNofqJeuPBXZLB+eclOoR5lO1i2lnmoLaPvH4OCfRTJNqhKxa+B hHVqQi0JJqriXilrNGy+KabXlcLYWfuVP8Dny1QhZYhF+Ly1W42vUYEGwIcstTOenPwE Q8iyPoY67RcPmjZVC2a9Fj/BkjU3Ii2f0IXDG8JWYaqkfCKTK5tGjFZ7xDIpIpZXXQD5 CSaeovXrh9KP5+L2RWLaByvWmoGTQQ7gzj7E4osgUTmYY7fWCAC00uOdfasa9jBDHDVu iGQwblC52UDbkq78Vj07DXQp0UWSpMEMkI7Rxa1/17d20lWIvXLBgk7/sijXFz3dm5Sk xHxQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1773887189; x=1774491989; 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=OUjOedTJILydQY7f/OfkEk8wUHENkhFnJJVe3/bR9qI=; b=fth1fAmnu0DjPJoyssDk6Bp4h5VEyYM3p5LHWoWvM6K4GwzHANLJ/QJTS9f0k9DnOk XkTeCDxUrlVPjGviTw5WJ40M3dXSPFVpzu4rTgFfiODCCago+tsf+zbQeYvhZU2r6Jkv woCzqexufaaab90jf3alFlhO2FMWxQDAmBFOb2FK5OCgDFJpaUwQgUEAdbPmH5D/pmj8 KjLfBpAsXiO5oOAG0+mnw+q+Fqk/g4CipR8oWxhSIso88SSXSjDDFrh1xeF6aEgBJ7Az bFK5G+E9izyfZeWAq4KyYxi1kC5m3/+9xkgv+u8OOkJdYrWWv4lFnlCyNv1QsmEHindy PZJg== X-Gm-Message-State: AOJu0YxOdOkIkIW7vKIY4LF3d0Pu39C5EdEUd/486nRXMkMlEoIumW5R pyGLvGsFEbEFUVWKPCQSFSz9FolsvQMGIrUPiSu3x1ZNk5jkGCVtseY6lchyYOMtVFj3a6/vZTL ZpXAUyso= X-Gm-Gg: ATEYQzwpbizzK/U4erpRLQNcaxPAtaV7wBF2+tSo4orYgB3iKLFI+b98p+S/29nMeus xLw7ZJgzngQDOeqaP5SYypZGEDqSQii9gqSWLeCgHnV4DT3GvE8KVQG91O4A3j3/+To+P1nT/fF HuYwVXNU40H3G3W/+5VarojPMtPy6OHTEYnpT8TDYg74QZRw9XNLOAqinh3TMfYJlJI8m+Fgzl1 +AmZuOUMUhS9ICGMRdWIWGOkhgNEyUHW3vZ4SF7n5qB5GfG4J0JcM0sL3a6YDfJ2DOhRNcRTqIA wNQHJGcSv8MpifJrF3QaELpqo+fySQMrNuQWndFhNKJWJxb6i/u1I9pVTwn3zVwpl5uDxQxWGQF wEwAtSkC0mE50WzZNvmOf9Z9yN7EHYAyBlJ3ZC2MIQROqayPPUfMJIfPRNdy++AjUA5WFbYRizD 8Jrztzr8GNHlQx608aoCwgH8K5N9kN+g== X-Received: by 2002:a05:690c:c4f1:b0:796:6df5:485a with SMTP id 00721157ae682-79a71ade093mr57741587b3.39.1773887189009; Wed, 18 Mar 2026 19:26:29 -0700 (PDT) From: Gustavo Romero To: qemu-devel@nongnu.org, qemu-arm@nongnu.org, richard.henderson@linaro.org Cc: alex.bennee@linaro.org, peter.maydell@linaro.org, gustavo.romero@linaro.org Subject: [RFC PATCH 1/7] target/arm: Flush TLB on MECID write Date: Wed, 18 Mar 2026 23:23:29 -0300 Message-Id: <20260319022335.22523-2-gustavo.romero@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260319022335.22523-1-gustavo.romero@linaro.org> References: <20260319022335.22523-1-gustavo.romero@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::112f; envelope-from=gustavo.romero@linaro.org; helo=mail-yw1-x112f.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: 1773887248786154100 Content-Type: text/plain; charset="utf-8" Flush TLB on write to any MECID register. This allow us to take the slow path and check if the MECID is the correct. Signed-off-by: Gustavo Romero Reviewed-by: Richard Henderson --- target/arm/helper.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/arm/helper.c b/target/arm/helper.c index 6bfab90981..ec25ec8444 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -5125,6 +5125,8 @@ static CPAccessResult mecid_access(CPUARMState *env, static void mecid_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) { + tlb_flush(CPU(env_archcpu(env))); + value =3D extract64(value, 0, MECID_WIDTH); raw_write(env, ri, value); } --=20 2.34.1