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[81.2.115.148]) by smtp.gmail.com with ESMTPSA id d2sm16878651wrq.26.2021.04.12.03.31.55 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 Apr 2021 03:31:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=MjfoM0Tks4eQc7j9h/yQNaMry9uJE+PRMj4/Mx8eY0c=; b=d8qwOd2E11UeRyOfUjp+TYmZSWJu0RjP8b2Wpl+cWC1+NOM+FrnEz+kmySLUPIZobz NGvxXtZM2RRHj/V0ueNt7JfwNOvpwD5nvlbmEowB/0hXDhrc4p8TFob8EjHqOjqBB3xg kjthSK5ZzSD5ux/SHkd/ib3h+z5fNiBsPvApcVv1knKVFCIQPwyiFjMD523KLAwSyuHx oKsTI4380ntufhDwwzSqSYbWAgD+fxHgIFyUEwtIPcO9wxxoGcdsvGm2y5zia0KTfohP K+BD9E4ia352q8Yn0ieCZbmlhO9l2OllOAQHUY7RAzqwyumk4QEqZUV1ozXCtET09jTE hspw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=MjfoM0Tks4eQc7j9h/yQNaMry9uJE+PRMj4/Mx8eY0c=; b=kuYMFKnjTpZC5O1pECGuVD2nbbazp+596zspAfW9M21g3/QQUQ3bEAOSRxlAwmbAew hmyf6NkpHuo/dMh5mBUSvmfr8bZQjPhUnDndJ97xINOSzjeaTIEk9Qs8YUSHtAmwtBSe VLOv/+BptCwxgufMdqj0NNFddCY5zJoZleu1BWtzFVdbsnqKGhN/woJk/Wu+ZO1/D7uc CmDJKvBj0Ua34Ra7aOBCvEn7EwkyJuxA4xZVXQdmVI3CCPEyr3yvhoqR9JTuXB9iIwmm 2pdXFTqaevRGpWblFGN2r5AXfFiXsv70Sl3/MW7bxlzICaWZr9z6QLbCFtSsqyU81wy2 L9Sg== X-Gm-Message-State: AOAM532jtIouA6Fl0ydzGZVe9H/+SjBV+KywcPBQeI5FpCbjEb6156EP Ah8msUDd6117e0ro9ji3trygZ4EKwWoaDSVk X-Google-Smtp-Source: ABdhPJzyR2XI/qpQv5/r7/6Imrm3KdKPhPukAxEaaiNIZqe9Ua0Fx8yqlysmkoA4XCiXJTyY7s7cHA== X-Received: by 2002:adf:f48e:: with SMTP id l14mr30606885wro.257.1618223516396; Mon, 12 Apr 2021 03:31:56 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 4/5] target/arm: Check PAGE_WRITE_ORG for MTE writeability Date: Mon, 12 Apr 2021 11:31:51 +0100 Message-Id: <20210412103152.28433-5-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210412103152.28433-1-peter.maydell@linaro.org> References: <20210412103152.28433-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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::42c; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x42c.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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) From: Richard Henderson We can remove PAGE_WRITE when (internally) marking a page read-only because it contains translated code. This can be triggered by tests/tcg/aarch64/bti-2, after having serviced SIGILL trampolines on the stack. Signed-off-by: Richard Henderson Reviewed-by: Alex Benn=C3=A9e Signed-off-by: Peter Maydell --- target/arm/mte_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/arm/mte_helper.c b/target/arm/mte_helper.c index 0bbb9ec3463..8be17e1b707 100644 --- a/target/arm/mte_helper.c +++ b/target/arm/mte_helper.c @@ -83,7 +83,7 @@ static uint8_t *allocation_tag_mem(CPUARMState *env, int = ptr_mmu_idx, uint8_t *tags; uintptr_t index; =20 - if (!(flags & (ptr_access =3D=3D MMU_DATA_STORE ? PAGE_WRITE : PAGE_RE= AD))) { + if (!(flags & (ptr_access =3D=3D MMU_DATA_STORE ? PAGE_WRITE_ORG : PAG= E_READ))) { /* SIGSEGV */ arm_cpu_tlb_fill(env_cpu(env), ptr, ptr_size, ptr_access, ptr_mmu_idx, false, ra); --=20 2.20.1