[{"id":1780893,"web_url":"http://patchwork.ozlabs.org/comment/1780893/","msgid":"","list_archive_url":null,"date":"2017-10-05T18:31:33","subject":"Re: [Qemu-devel] [PATCH 12/20] target/arm: Add v8M support to\n\texception entry code","submitter":{"id":72104,"url":"http://patchwork.ozlabs.org/api/people/72104/","name":"Richard Henderson","email":"richard.henderson@linaro.org"},"content":"On 09/22/2017 10:59 AM, Peter Maydell wrote:\n> Add support for v8M and in particular the security extension\n> to the exception entry code. This requires changes to:\n> * calculation of the exception-return magic LR value\n> * push the callee-saves registers in certain cases\n> * clear registers when taking non-secure exceptions to avoid\n> leaking information from the interrupted secure code\n> * switch to the correct security state on entry\n> * use the vector table for the security state we're targeting\n> \n> Signed-off-by: Peter Maydell \n> ---\n> target/arm/helper.c | 165 +++++++++++++++++++++++++++++++++++++++++++++-------\n> 1 file changed, 145 insertions(+), 20 deletions(-)\n\nReviewed-by: Richard Henderson \n\n\nr~","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; helo=lists.gnu.org;\n\tenvelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n\treceiver=)","ozlabs.org; dkim=pass (1024-bit key;\n\tunprotected) header.d=linaro.org header.i=@linaro.org\n\theader.b=\"kRNc1f2e\"; 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\n\tThu, 05 Oct 2017 11:31:35 -0700 (PDT)","To":"Peter Maydell , qemu-arm@nongnu.org,\n\tqemu-devel@nongnu.org","References":"<1506092407-26985-1-git-send-email-peter.maydell@linaro.org>\n\t<1506092407-26985-13-git-send-email-peter.maydell@linaro.org>","From":"Richard Henderson ","Message-ID":"","Date":"Thu, 5 Oct 2017 14:31:33 -0400","User-Agent":"Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101\n\tThunderbird/52.3.0","MIME-Version":"1.0","In-Reply-To":"<1506092407-26985-13-git-send-email-peter.maydell@linaro.org>","Content-Type":"text/plain; charset=utf-8","Content-Language":"en-US","Content-Transfer-Encoding":"7bit","X-detected-operating-system":"by eggs.gnu.org: Genre and OS details not\n\trecognized.","X-Received-From":"2607:f8b0:400d:c0d::233","Subject":"Re: [Qemu-devel] [PATCH 12/20] target/arm: Add v8M support to\n\texception entry code","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.21","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"patches@linaro.org","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"\"Qemu-devel\"\n\t"}}]