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[216.160.65.90]) by smtp.gmail.com with ESMTPSA id r191sm7261663pfr.181.2020.07.24.09.38.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 Jul 2020 09:38:55 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH for-5.1 0/3] target/arm: mte+pauth fixes Date: Fri, 24 Jul 2020 09:38:50 -0700 Message-Id: <20200724163853.504655-1-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::444; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x444.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" A couple of last minute fixes for MTE: (1) Peter pointed out that EL3's SCR.ATA needs to be set when we're booting a kernel directly. Similarly for API & APK. (2) Vincenzo pointed out that with RRND=1, we can't rely on RGSR having being initialized. I suppose the only follow-on question here is whether it is better to minimize the number of calls to qemu_guest_getrandom, or instead to name that our IMPDEF algorithm and use it for every call to IRG. We already have other user-space available RNG instructions that can drain the entropy pool, so this is not really different. r~ Richard Henderson (3): hw/arm/boot: Fix PAUTH for EL3 direct kernel boot hw/arm/boot: Fix MTE for EL3 direct kernel boot target/arm: Improve IMPDEF algorithm for IRG hw/arm/boot.c | 6 ++++++ target/arm/mte_helper.c | 37 ++++++++++++++++++++++++++++++------- 2 files changed, 36 insertions(+), 7 deletions(-) -- 2.25.1