{"id":2231467,"url":"http://patchwork.ozlabs.org/api/patches/2231467/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260430172204.1006673-45-pbonzini@redhat.com/","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":"<20260430172204.1006673-45-pbonzini@redhat.com>","list_archive_url":null,"date":"2026-04-30T17:21:50","name":"[PULL,44/58] whpx: i386: ignore vpassist when kernel-irqchip=off","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"b2e3dc2c8153760dd9fb9140ee1ba07776743655","submitter":{"id":2701,"url":"http://patchwork.ozlabs.org/api/people/2701/?format=json","name":"Paolo Bonzini","email":"pbonzini@redhat.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260430172204.1006673-45-pbonzini@redhat.com/mbox/","series":[{"id":502347,"url":"http://patchwork.ozlabs.org/api/series/502347/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=502347","date":"2026-04-30T17:21:16","name":"[PULL,01/58] pythondeps: bump to meson 1.11.1","version":1,"mbox":"http://patchwork.ozlabs.org/series/502347/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2231467/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2231467/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 (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 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SMTP id\n af79cd13be357-8fa875a404fmr629345785a.21.1777569864768;\n Thu, 30 Apr 2026 10:24:24 -0700 (PDT)","by 2002:a05:620a:17aa:b0:8ef:ca26:dcd6 with SMTP id\n af79cd13be357-8fa875a404fmr629334885a.21.1777569864000;\n Thu, 30 Apr 2026 10:24:24 -0700 (PDT)"],"From":"Paolo Bonzini ","To":"qemu-devel@nongnu.org","Cc":"Mohamed Mediouni ","Subject":"[PULL 44/58] whpx: i386: ignore vpassist when kernel-irqchip=off","Date":"Thu, 30 Apr 2026 19:21:50 +0200","Message-ID":"<20260430172204.1006673-45-pbonzini@redhat.com>","X-Mailer":"git-send-email 2.54.0","In-Reply-To":"<20260430172204.1006673-1-pbonzini@redhat.com>","References":"<20260430172204.1006673-1-pbonzini@redhat.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Received-SPF":"pass client-ip=170.10.129.124;\n envelope-from=pbonzini@redhat.com;\n helo=us-smtp-delivery-124.mimecast.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, DKIMWL_WL_HIGH=-0.001,\n DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001,\n SPF_HELO_PASS=-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":"2.1.29","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":"From: Mohamed Mediouni \n\nLinux tries to set vpassist even when none of the enlightenments\nusing it are available.\n\nSo ignore the page it sets.\n\nSigned-off-by: Mohamed Mediouni \nLink: https://lore.kernel.org/r/20260422214225.2242-21-mohamed@unpredictable.fr\nSigned-off-by: Paolo Bonzini \n---\n target/i386/whpx/whpx-all.c | 13 +++++++++++++\n 1 file changed, 13 insertions(+)","diff":"diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c\nindex 8fbce415903..11c9d8729fa 100644\n--- a/target/i386/whpx/whpx-all.c\n+++ b/target/i386/whpx/whpx-all.c\n@@ -51,6 +51,7 @@\n #define HYPERV_APIC_BUS_FREQUENCY (200000000ULL)\n /* for kernel-irqchip=off */\n #define HV_X64_MSR_APIC_FREQUENCY 0x40000023\n+#define HV_X64_MSR_VP_ASSIST_PAGE 0x40000073\n \n static bool is_modern_os = true;\n \n@@ -2123,6 +2124,18 @@ int whpx_vcpu_run(CPUState *cpu)\n }\n }\n }\n+\n+ /*\n+ * Linux tries to use it anyway even when not exposed.\n+ * Ignore the write as the VP assist page is not used.\n+ */\n+ if (vcpu->exit_ctx.MsrAccess.MsrNumber == HV_X64_MSR_VP_ASSIST_PAGE\n+ && vcpu->exit_ctx.MsrAccess.AccessInfo.IsWrite\n+ && !whpx_irqchip_in_kernel()\n+ && whpx->hyperv_enlightenments_enabled) {\n+ is_known_msr = 1;\n+ }\n+\n /*\n * For all unsupported MSR access we:\n * ignore writes\n","prefixes":["PULL","44/58"]}