{"id":2235157,"url":"http://patchwork.ozlabs.org/api/1.2/covers/2235157/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/cover/20260508-jmac-gpctest-v1-0-e57e42c87e1e@linaro.org/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.2/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260508-jmac-gpctest-v1-0-e57e42c87e1e@linaro.org>","list_archive_url":null,"date":"2026-05-08T17:20:11","name":"[0/3] RFC: Testing exceptions in tests/tcg/aarch64","submitter":{"id":92076,"url":"http://patchwork.ozlabs.org/api/1.2/people/92076/?format=json","name":"Jim MacArthur","email":"jim.macarthur@linaro.org"},"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/cover/20260508-jmac-gpctest-v1-0-e57e42c87e1e@linaro.org/mbox/","series":[{"id":503424,"url":"http://patchwork.ozlabs.org/api/1.2/series/503424/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=503424","date":"2026-05-08T17:20:13","name":"RFC: Testing exceptions in tests/tcg/aarch64","version":1,"mbox":"http://patchwork.ozlabs.org/series/503424/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/covers/2235157/comments/","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=w5o7VbOJ;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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charset=\"utf-8\"","Content-Transfer-Encoding":"7bit","X-B4-Tracking":"v=1; b=H4sIAEsb/mkC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE\n vPSU3UzU4B8JSMDIzMDUwML3azcxGTd9ILkktTiEt1E87REs8RES4NkcwsloJaCotS0zAqwcdG\n xtbUAwDEzOF4AAAA=","To":"qemu-devel@nongnu.org","Cc":"Peter Maydell , qemu-arm@nongnu.org,\n Jim MacArthur ","X-Mailer":"b4 0.13.0","Received-SPF":"pass client-ip=2a00:1450:4864:20::330;\n envelope-from=jim.macarthur@linaro.org; helo=mail-wm1-x330.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,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=ham autolearn_force=no","X-Spam_action":"no action","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"qemu development ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"In order to test the granule protection system meaningfully, we need\nto verify that certain memory accesses cause the correct exceptions.\nAFAIK, we do have system tests which boot kernels using GPC, but no\nfiner grained tests for specific GPC behaviour.\n\nSo I've added the following example test of GPC. It uses a new vector\ntable which can replace the one in boot.S with one which will record\nand ignore certain types of exception (data aborts and GPC\nexceptions).\n\nThe test itself (gpc-test.c) is not quite ready for submission yet,\nbut I would like feedback on the mechanism used for verifying\nexceptions. (For example, if we do in fact have an existing way of\ntesting exceptions.)\n\nOnce a mechanism for testing is in place, adding some more features\n(for example FEAT_RME_GPC3) should be relatively easy.\n\nSigned-off-by: Jim MacArthur \n---\nJim MacArthur (3):\n boot.S: Allocate minimal space for granule protection tables\n altvec.S: Alternative vector table for aarch64 testing\n gpc-test.c: Basic test for granule protection check.\n\n tests/tcg/aarch64/Makefile.softmmu-target | 7 +-\n tests/tcg/aarch64/system/altvec.S | 129 ++++++++++++++++++++++++++++++\n tests/tcg/aarch64/system/boot.S | 10 +++\n tests/tcg/aarch64/system/gpc-test.c | 125 +++++++++++++++++++++++++++++\n 4 files changed, 270 insertions(+), 1 deletion(-)\n---\nbase-commit: ee7eb612be8f8886d48c1d0c1f1c65e495138f83\nchange-id: 20260508-jmac-gpctest-a7fa6aa90c78\n\nBest regards,"}