From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f73.google.com (mail-pj1-f73.google.com [209.85.216.73]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 60D78379EF5 for ; Tue, 7 Apr 2026 19:03:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.73 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775588640; cv=none; b=oBgiSPqx2arAZiCdVfNA56yVI83oJPi/xfsuE9EwAJPZ3rLu6FUq9coM2Idv1vMtHRQXEG9OfGD6POV4AD/uxjiBbEAN5lW6EcNrMdErU9c8cqEt3WkXN+N/oL3MT0EfesAh8QO5YJkGz/KWx8//N0Imj/j0JlCOxXeYo5mgLV8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775588640; c=relaxed/simple; bh=PZR+SizrlOgJ1L0IeKgPGj8oQs4ZXYjZFTHQee54iYU=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=P+uX4IJLaaBjRlUBDtgf4z1TyuOK1W+n8HdUXieOmsh67BmrYdx/mc0eQrzr7XCQnyQMGafdZV1wU84354xofFkocBX6Hgr4jH5/y8Ux7sVOaKttEJgBsfbj6htJki9hiatL1zfyUuhAL9DyDKMXcZlVXJiq9dU2UusT9PxqNGU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--jmattson.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=nkKbVPOx; arc=none smtp.client-ip=209.85.216.73 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--jmattson.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="nkKbVPOx" Received: by mail-pj1-f73.google.com with SMTP id 98e67ed59e1d1-35da99b90f6so5958769a91.1 for ; Tue, 07 Apr 2026 12:03:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1775588639; x=1776193439; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=NydMzT72BWpNLXYUYCtPVtyCG9QnLXc1NxEAbEX7NMc=; b=nkKbVPOxKMGmOlMxrw7P+dSJa32RJvSvFuSZIWZSAE1KRZZAHtDEM5iuLCaI+aa5iV GtAmeaIPEDTMLYjGqlADzJW/mtKxg3QdDAyrnuGRCcqD3fgUlibMYh/vB3OiUFkGhrai 6NV95yxQtdGY+t8wjcRAaZx432N5yCVOym6wm0KgHgzCaJCPVWj8+l4JhM/5WHF9c2dy eo32UBIhA1OkfdMPSex/Iys0UZehE4oYK9rkuCRv18qdyeP5aR1o9MyPIOQs/lYOi5RX Ac0oDCoVgZI5zf9MdSGrc4xgH/EjpXZxjHOezlHiv+IpGDiarhhtfiq3K/hxWtTB7IFT 516Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1775588639; x=1776193439; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=NydMzT72BWpNLXYUYCtPVtyCG9QnLXc1NxEAbEX7NMc=; b=giFfKWryidNX6QUQdrve0dn8E6A76tz8pDW9z5eJLARE64ZSMWYfGWReIF+72scHh9 qMODK+LAkqvHtGmx4L5MF6oHEw94Q1r29018WCOdyJM0ygmuY6hF147jVL11wF/YZuvh CpcXyLSLaW0cllvIPWhIlYNq8YzPEoJGP9SUoR9x52e856C/xAQx5vTviNJ+mgGWjBCO Tpl4DpKeYxRn7YmP7sWZRqeCywFEuUbbdowmHQ2M95P7LlhblbmVhdC73xhUpvre9Za7 2iPY0ikLwMEklfjf4bQtDLNipc1KfuFm3/Qd1UTLIEKIooekvJIQGXSEIJLYE8kUED+a JUyw== X-Forwarded-Encrypted: i=1; AJvYcCXY9ccU9x2oR1jyd4QIPiAULVOnblFsLR6ylFzl56KK/ZJ/USYUHWSW0/GF9YOTaahWNutaHbj2TjE=@vger.kernel.org X-Gm-Message-State: AOJu0YwNq04BzborCxyY0mD/GDoQqtJcDyNWf0PPNH2ug/1C0yZQOdxK v7xl9TCYvWLXHk2z5ysC7btNGRbe9inly+YXiURfbrA+CLoXbGIrH/4CUSpUSKrKRJBow4a3DZX BCtsF+yF9AAZx3g== X-Received: from pjbsc11.prod.google.com ([2002:a17:90b:510b:b0:35c:d80:c2a7]) (user=jmattson job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:2fc3:b0:35b:97ba:acee with SMTP id 98e67ed59e1d1-35de6977523mr16658460a91.17.1775588638444; Tue, 07 Apr 2026 12:03:58 -0700 (PDT) Date: Tue, 7 Apr 2026 12:03:30 -0700 In-Reply-To: <20260407190343.325299-1-jmattson@google.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260407190343.325299-1-jmattson@google.com> X-Mailer: git-send-email 2.53.0.1213.gd9a14994de-goog Message-ID: <20260407190343.325299-8-jmattson@google.com> Subject: [PATCH v8 7/8] KVM: Documentation: document KVM_{GET,SET}_NESTED_STATE for SVM From: Jim Mattson To: Paolo Bonzini , Jonathan Corbet , Shuah Khan , Sean Christopherson , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , kvm@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Yosry Ahmed Cc: Jim Mattson Content-Type: text/plain; charset="UTF-8" Document the nested state constants and structures for SVM that were added by commit cc440cdad5b7 ("KVM: nSVM: implement KVM_GET_NESTED_STATE and KVM_SET_NESTED_STATE"). Fixes: cc440cdad5b7 ("KVM: nSVM: implement KVM_GET_NESTED_STATE and KVM_SET_NESTED_STATE") Signed-off-by: Jim Mattson --- Documentation/virt/kvm/api.rst | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst index 2d56f17e3760..0a2d873ca5a3 100644 --- a/Documentation/virt/kvm/api.rst +++ b/Documentation/virt/kvm/api.rst @@ -4942,10 +4942,13 @@ Errors: #define KVM_STATE_NESTED_FORMAT_SVM 1 #define KVM_STATE_NESTED_VMX_VMCS_SIZE 0x1000 + #define KVM_STATE_NESTED_SVM_VMCB_SIZE 0x1000 #define KVM_STATE_NESTED_VMX_SMM_GUEST_MODE 0x00000001 #define KVM_STATE_NESTED_VMX_SMM_VMXON 0x00000002 + #define KVM_STATE_NESTED_GIF_SET 0x00000100 + #define KVM_STATE_VMX_PREEMPTION_TIMER_DEADLINE 0x00000001 struct kvm_vmx_nested_state_hdr { @@ -4960,11 +4963,19 @@ Errors: __u64 preemption_timer_deadline; }; + struct kvm_svm_nested_state_hdr { + __u64 vmcb_pa; + }; + struct kvm_vmx_nested_state_data { __u8 vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE]; __u8 shadow_vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE]; }; + struct kvm_svm_nested_state_data { + __u8 vmcb12[KVM_STATE_NESTED_SVM_VMCB_SIZE]; + }; + This ioctl copies the vcpu's nested virtualization state from the kernel to userspace. -- 2.53.0.1213.gd9a14994de-goog