{"id":2224412,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2224412/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260417-jmac-feat_rme_gdi-v2-4-7cf5131aeb60@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":"<20260417-jmac-feat_rme_gdi-v2-4-7cf5131aeb60@linaro.org>","list_archive_url":null,"date":"2026-04-17T11:02:56","name":"[v2,4/4] tests/tcg/aarch64/system/rme_gdi.c: Very basic test of GDI","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"0549a0e3656d6580cddc05e93e13ec78119e3b69","submitter":{"id":92076,"url":"http://patchwork.ozlabs.org/api/1.2/people/92076/?format=json","name":"Jim MacArthur","email":"jim.macarthur@linaro.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260417-jmac-feat_rme_gdi-v2-4-7cf5131aeb60@linaro.org/mbox/","series":[{"id":500311,"url":"http://patchwork.ozlabs.org/api/1.2/series/500311/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=500311","date":"2026-04-17T11:02:52","name":"FEAT_RME_GDI initial work","version":2,"mbox":"http://patchwork.ozlabs.org/series/500311/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2224412/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2224412/checks/","tags":{},"related":[],"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=DjLR1kvu;\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","Message-Id":"<20260417-jmac-feat_rme_gdi-v2-4-7cf5131aeb60@linaro.org>","References":"<20260417-jmac-feat_rme_gdi-v2-0-7cf5131aeb60@linaro.org>","In-Reply-To":"<20260417-jmac-feat_rme_gdi-v2-0-7cf5131aeb60@linaro.org>","To":"qemu-devel@nongnu.org","Cc":"Peter Maydell ,\n Richard Henderson , qemu-arm@nongnu.org,\n Jim MacArthur ","X-Mailer":"b4 0.13.0","Received-SPF":"pass client-ip=2a00:1450:4864:20::42e;\n envelope-from=jim.macarthur@linaro.org; helo=mail-wr1-x42e.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":"Simply tests GDI's prerequisites; that if GDI is enabled then\nso are FEAT_RME and FEAT_RME_GPC2.\n\nSigned-off-by: Jim MacArthur \n---\n tests/tcg/aarch64/system/rme_gdi.c | 56 ++++++++++++++++++++++++++++++++++++++\n 1 file changed, 56 insertions(+)","diff":"diff --git a/tests/tcg/aarch64/system/rme_gdi.c b/tests/tcg/aarch64/system/rme_gdi.c\nnew file mode 100644\nindex 0000000000..0921b791bd\n--- /dev/null\n+++ b/tests/tcg/aarch64/system/rme_gdi.c\n@@ -0,0 +1,56 @@\n+/* SPDX-License-Identifier: GPL-2.0-or-later */\n+/*\n+ *\n+ * FEAT_RME_GDI Feature presence and enabled bits test\n+ *\n+ * Copyright (c) 2026 Linaro Ltd\n+ *\n+ */\n+\n+#include \n+#include \n+\n+#define ID_AA64PFR0_EL1 \"S3_0_C0_C4_0\"\n+#define ID_AA64MMFR4_EL1 \"S3_0_C0_C7_4\"\n+\n+int main()\n+{\n+ uint64_t mmfr4;\n+ uint64_t pfr0;\n+ int rme_status;\n+ int rmegdi_status;\n+\n+ asm(\"mrs %[pfr0], \" ID_AA64PFR0_EL1 \"\\n\\t\"\n+ : [pfr0] \"=r\" (pfr0));\n+\n+ /* rme_status is 1 for RME, 2 for RME + GPC2, 3 for RME+GPC3 */\n+ rme_status = (pfr0 >> 52) & 0xF;\n+\n+ asm(\"mrs %[mmfr4], \" ID_AA64MMFR4_EL1 \"\\n\\t\"\n+ : [mmfr4] \"=r\" (mmfr4));\n+\n+ rmegdi_status = ((mmfr4 >> 28) & 0xF);\n+\n+ switch (rmegdi_status) {\n+ case 0:\n+ ml_printf(\"SKIP: GDI not implemented\\n\");\n+ return 0;\n+ case 1:\n+ /* GDI is implemented, so continue testing */\n+ break;\n+ default:\n+ ml_printf(\"FAIL: GDI status is %d, only values 0 and 1 are defined\\n\",\n+ rmegdi_status);\n+ return 1;\n+ }\n+\n+ if (rmegdi_status != 0) {\n+ /* Check FEAT_RME and FEAT_RME_GPC2 also present */\n+ if (rme_status < 2) {\n+ ml_printf(\"FAIL: GDI is %d, but RME is %d; RME should be >= 2\\n\",\n+ rmegdi_status, rme_status);\n+ return 1;\n+ }\n+ }\n+ return 0;\n+}\n","prefixes":["v2","4/4"]}