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GET /api/patches/2231466/?format=api
{ "id": 2231466, "url": "http://patchwork.ozlabs.org/api/patches/2231466/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260430172204.1006673-32-pbonzini@redhat.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "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": "<20260430172204.1006673-32-pbonzini@redhat.com>", "list_archive_url": null, "date": "2026-04-30T17:21:37", "name": "[PULL,31/58] whpx: i386: use WHvX64RegisterCr8 only when kernel-irqchip=off", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "fdf8a7880917f8e1e26cefbbd6846b1aeb98968d", "submitter": { "id": 2701, "url": "http://patchwork.ozlabs.org/api/people/2701/?format=api", "name": "Paolo Bonzini", "email": "pbonzini@redhat.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260430172204.1006673-32-pbonzini@redhat.com/mbox/", "series": [ { "id": 502347, "url": "http://patchwork.ozlabs.org/api/series/502347/?format=api", "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/2231466/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2231466/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "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) 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iJGEkV5sPCcsYn2i+GFweiI0t1B5G/vFJF9MdtyauJQKeNYn+LQZy6OjBXTGrwZ8wVxuLIKee+1\n jCh1rF78ifWkh265v7IV9PO1Ai6QGeN2MgDz0hRfHkhapSpHGPEzOKvq+mouQ+3qn8usQVNwqeC\n QgDR35gpn+tuLVGUYrwhRXqxAsR4nlVFe+KSo=", "X-Received": [ "by 2002:a05:622a:513:b0:50f:b81e:c655 with SMTP id\n d75a77b69052e-5102afa4e75mr53971391cf.57.1777569825130;\n Thu, 30 Apr 2026 10:23:45 -0700 (PDT)", "by 2002:a05:622a:513:b0:50f:b81e:c655 with SMTP id\n d75a77b69052e-5102afa4e75mr53970681cf.57.1777569824459;\n Thu, 30 Apr 2026 10:23:44 -0700 (PDT)" ], "From": "Paolo Bonzini <pbonzini@redhat.com>", "To": "qemu-devel@nongnu.org", "Cc": "Mohamed Mediouni <mohamed@unpredictable.fr>", "Subject": "[PULL 31/58] whpx: i386: use WHvX64RegisterCr8 only when\n kernel-irqchip=off", "Date": "Thu, 30 Apr 2026 19:21:37 +0200", "Message-ID": "<20260430172204.1006673-32-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=170.10.133.124;\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_H5=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 <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "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 <mohamed@unpredictable.fr>\n\nWhen kernel-irqchip=on, manage TPR as part of the APIC state instead entirely.\n\nThis fixes some failure to set state errors.\n\nSigned-off-by: Mohamed Mediouni <mohamed@unpredictable.fr>\nLink: https://lore.kernel.org/r/20260422214225.2242-10-mohamed@unpredictable.fr\nSigned-off-by: Paolo Bonzini <pbonzini@redhat.com>\n---\n target/i386/whpx/whpx-all.c | 37 ++++++++++++++++++++++---------------\n 1 file changed, 22 insertions(+), 15 deletions(-)", "diff": "diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c\nindex d470c5b9d37..03c146dfb8c 100644\n--- a/target/i386/whpx/whpx-all.c\n+++ b/target/i386/whpx/whpx-all.c\n@@ -95,7 +95,6 @@ static const WHV_REGISTER_NAME whpx_register_names[] = {\n WHvX64RegisterCr2,\n WHvX64RegisterCr3,\n WHvX64RegisterCr4,\n- WHvX64RegisterCr8,\n \n /* X64 Debug Registers */\n /*\n@@ -478,8 +477,11 @@ void whpx_set_registers(CPUState *cpu, WHPXStateLevel level)\n vcxt.values[idx++].Reg64 = env->cr[3];\n assert(whpx_register_names[idx] == WHvX64RegisterCr4);\n vcxt.values[idx++].Reg64 = env->cr[4];\n- assert(whpx_register_names[idx] == WHvX64RegisterCr8);\n- vcxt.values[idx++].Reg64 = vcpu->tpr;\n+ /* For kernel-irqchip=on, TPR is managed as part of APIC state */\n+ if (!whpx_irqchip_in_kernel()) {\n+ WHV_REGISTER_VALUE cr8 = {.Reg64 = vcpu->tpr};\n+ whpx_set_reg(cpu, WHvX64RegisterCr8, cr8);\n+ }\n \n /* 8 Debug Registers - Skipped */\n \n@@ -735,11 +737,14 @@ void whpx_get_registers(CPUState *cpu, WHPXStateLevel level)\n env->cr[3] = vcxt.values[idx++].Reg64;\n assert(whpx_register_names[idx] == WHvX64RegisterCr4);\n env->cr[4] = vcxt.values[idx++].Reg64;\n- assert(whpx_register_names[idx] == WHvX64RegisterCr8);\n- tpr = vcxt.values[idx++].Reg64;\n- if (tpr != vcpu->tpr) {\n- vcpu->tpr = tpr;\n- cpu_set_apic_tpr(x86_cpu->apic_state, tpr);\n+\n+ /* For kernel-irqchip=on, TPR is managed as part of APIC state */\n+ if (!whpx_irqchip_in_kernel()) {\n+ tpr = vcpu->exit_ctx.VpContext.Cr8;\n+ if (tpr != vcpu->tpr) {\n+ vcpu->tpr = tpr;\n+ cpu_set_apic_tpr(x86_cpu->apic_state, tpr);\n+ }\n }\n \n /* 8 Debug Registers - Skipped */\n@@ -1745,7 +1750,7 @@ static void whpx_vcpu_pre_run(CPUState *cpu)\n \n /* Sync the TPR to the CR8 if was modified during the intercept */\n tpr = cpu_get_apic_tpr(x86_cpu->apic_state);\n- if (tpr != vcpu->tpr) {\n+ if (!whpx_irqchip_in_kernel() && tpr != vcpu->tpr) {\n vcpu->tpr = tpr;\n reg_values[reg_count].Reg64 = tpr;\n qatomic_set(&cpu->exit_request, true);\n@@ -1787,12 +1792,14 @@ static void whpx_vcpu_post_run(CPUState *cpu)\n \n env->eflags = vcpu->exit_ctx.VpContext.Rflags;\n \n- uint64_t tpr = vcpu->exit_ctx.VpContext.Cr8;\n- if (vcpu->tpr != tpr) {\n- vcpu->tpr = tpr;\n- bql_lock();\n- cpu_set_apic_tpr(x86_cpu->apic_state, vcpu->tpr);\n- bql_unlock();\n+ if (!whpx_irqchip_in_kernel()) {\n+ uint64_t tpr = vcpu->exit_ctx.VpContext.Cr8;\n+ if (vcpu->tpr != tpr) {\n+ vcpu->tpr = tpr;\n+ bql_lock();\n+ cpu_set_apic_tpr(x86_cpu->apic_state, vcpu->tpr);\n+ bql_unlock();\n+ }\n }\n \n vcpu->interruption_pending =\n", "prefixes": [ "PULL", "31/58" ] }