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[216.160.65.90]) by smtp.gmail.com with ESMTPSA id r191sm7261663pfr.181.2020.07.24.09.38.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 Jul 2020 09:38:57 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH 2/3] hw/arm/boot: Fix MTE for EL3 direct kernel boot Date: Fri, 24 Jul 2020 09:38:52 -0700 Message-Id: <20200724163853.504655-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200724163853.504655-1-richard.henderson@linaro.org> References: <20200724163853.504655-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::641; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x641.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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: , Cc: peter.maydell@linaro.org, vincenzo.frascino@arm.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" When booting an EL3 cpu with -kernel, we set up EL3 and then drop down to EL2. We need to enable access to v8.5-MemTag tag allocation at EL3 before doing so. Reported-by: Peter Maydell Signed-off-by: Richard Henderson --- hw/arm/boot.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/hw/arm/boot.c b/hw/arm/boot.c index c44fd3382d..3e9816af80 100644 --- a/hw/arm/boot.c +++ b/hw/arm/boot.c @@ -739,6 +739,9 @@ static void do_cpu_reset(void *opaque) if (cpu_isar_feature(aa64_pauth, cpu)) { env->cp15.scr_el3 |= SCR_API | SCR_APK; } + if (cpu_isar_feature(aa64_mte, cpu)) { + env->cp15.scr_el3 |= SCR_ATA; + } /* AArch64 kernels never boot in secure mode */ assert(!info->secure_boot); /* This hook is only supported for AArch32 currently: -- 2.25.1