{"id":2227419,"url":"http://patchwork.ozlabs.org/api/patches/2227419/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260423170229.64655-7-philmd@linaro.org/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/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":"<20260423170229.64655-7-philmd@linaro.org>","list_archive_url":null,"date":"2026-04-23T17:02:18","name":"[06/16] system/cpu: Defer memory layout changes until vCPUs are realized","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"4495be50e43ef386adc514fef4ed1f640d9a28c6","submitter":{"id":85046,"url":"http://patchwork.ozlabs.org/api/people/85046/?format=json","name":"Philippe Mathieu-Daudé","email":"philmd@linaro.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260423170229.64655-7-philmd@linaro.org/mbox/","series":[{"id":501223,"url":"http://patchwork.ozlabs.org/api/series/501223/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=501223","date":"2026-04-23T17:02:12","name":"accel/hvf: Assorted collection of patches queued before v11 release","version":1,"mbox":"http://patchwork.ozlabs.org/series/501223/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2227419/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2227419/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=KTbvI8z2;\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":"8bit","Received-SPF":"pass client-ip=2a00:1450:4864:20::431;\n envelope-from=philmd@linaro.org; helo=mail-wr1-x431.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":"vCPUs are not really usable until fully realized. Do not attempt\nto commit memory changes in the middle of vCPU realization. Defer\nuntil realization is completed and vCPU fully operational.\n\nSigned-off-by: Philippe Mathieu-Daudé \nReviewed-by: Richard Henderson \n---\n system/physmem.c | 8 ++++++++\n 1 file changed, 8 insertions(+)","diff":"diff --git a/system/physmem.c b/system/physmem.c\nindex 4e26f1a1d42..091a1da3458 100644\n--- a/system/physmem.c\n+++ b/system/physmem.c\n@@ -3089,6 +3089,14 @@ static void tcg_commit(MemoryListener *listener)\n cpuas = container_of(listener, CPUAddressSpace, tcg_as_listener);\n cpu = cpuas->cpu;\n \n+ if (!qdev_is_realized(DEVICE(cpu))) {\n+ /*\n+ * The listener is also called during realize, before\n+ * all of the tcg machinery for run-on is initialized.\n+ */\n+ return;\n+ }\n+\n /*\n * Queueing the work function will kick the cpu back to\n * the main loop, which will end the RCU critical section and reclaim\n","prefixes":["06/16"]}