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Fri, 05 Jul 2024 08:37:11 -0700 (PDT) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= To: qemu-devel@nongnu.org Cc: Gustavo Romero , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Richard Henderson , Peter Maydell , qemu-arm@nongnu.org (open list:ARM TCG CPUs) Subject: [PULL 33/40] target/arm: Fix exception case in allocation_tag_mem_probe Date: Fri, 5 Jul 2024 16:30:45 +0100 Message-Id: <20240705153052.1219696-34-alex.bennee@linaro.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240705153052.1219696-1-alex.bennee@linaro.org> References: <20240705153052.1219696-1-alex.bennee@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::62a; envelope-from=alex.bennee@linaro.org; helo=mail-ej1-x62a.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: 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: 1720193989741100001 From: Gustavo Romero If page in 'ptr_access' is inaccessible and probe is 'true' allocation_tag_mem_probe should not throw an exception, but currently it does, so fix it. Signed-off-by: Gustavo Romero Reviewed-by: Alex Benn=C3=A9e Reviewed-by: Richard Henderson Message-Id: <20240628050850.536447-5-gustavo.romero@linaro.org> Signed-off-by: Alex Benn=C3=A9e Message-Id: <20240705084047.857176-34-alex.bennee@linaro.org> diff --git a/target/arm/tcg/mte_helper.c b/target/arm/tcg/mte_helper.c index 037ac6dd60..a50d576294 100644 --- a/target/arm/tcg/mte_helper.c +++ b/target/arm/tcg/mte_helper.c @@ -96,6 +96,9 @@ static uint8_t *allocation_tag_mem_probe(CPUARMState *env= , int ptr_mmu_idx, assert(!(probe && ra)); =20 if (!(flags & (ptr_access =3D=3D MMU_DATA_STORE ? PAGE_WRITE_ORG : PAG= E_READ))) { + if (probe) { + return NULL; + } cpu_loop_exit_sigsegv(env_cpu(env), ptr, ptr_access, !(flags & PAGE_VALID), ra); } --=20 2.39.2