From: "Edgecombe, Rick P" <rick.p.edgecombe@intel.com>
To: "Li, Xiaoyao" <xiaoyao.li@intel.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"binbin.wu@linux.intel.com" <binbin.wu@linux.intel.com>
Cc: "kas@kernel.org" <kas@kernel.org>,
"pbonzini@redhat.com" <pbonzini@redhat.com>,
"nik.borisov@suse.com" <nik.borisov@suse.com>,
"seanjc@google.com" <seanjc@google.com>,
"Gao, Chao" <chao.gao@intel.com>,
"dave.hansen@linux.intel.com" <dave.hansen@linux.intel.com>,
"andrew.cooper3@citrix.com" <andrew.cooper3@citrix.com>
Subject: Re: [PATCH v3 1/4] KVM: TDX: Track configurable CPUID bits allowed by KVM
Date: Wed, 2 Sep 2026 16:22:20 +0000 [thread overview]
Message-ID: <249dcccf2353181f595547d19a07232fded71023.camel@intel.com> (raw)
In-Reply-To: <84891108-55be-48c1-9993-c730a5334d5b@linux.intel.com>
On Thu, 2026-09-03 at 00:19 +0800, Binbin Wu wrote:
> > I see. You added patch 2 because without it QEMU breaks. While for
> > EST/TM2/SDBG/XTPR/DCA, QEMU doesn't break after they are turned to
> > non-configurable. QEMU cannot represent all the userspace VMM. It still has
> > the potential to breaks other userspace VMMs.
>
> I think the risk is pretty low.
> I am not sure if Sean could provide some insight about this in google's
> userspace VMM.
Can't we fix the issue if we are wrong?
next prev parent reply other threads:[~2026-09-02 16:22 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-27 3:18 [PATCH v3 0/4] KVM: TDX: Validate directly configurable CPUID bits Binbin Wu
2026-08-27 3:18 ` [PATCH v3 1/4] KVM: TDX: Track configurable CPUID bits allowed by KVM Binbin Wu
2026-09-01 6:29 ` Tony Lindgren
2026-09-01 8:23 ` Binbin Wu
2026-09-01 8:27 ` Tony Lindgren
2026-09-01 14:35 ` Xiaoyao Li
2026-09-02 0:33 ` Binbin Wu
2026-09-02 15:09 ` Xiaoyao Li
2026-09-02 16:19 ` Binbin Wu
2026-09-02 16:22 ` Edgecombe, Rick P [this message]
2026-09-02 16:25 ` Binbin Wu
2026-09-03 7:28 ` Xiaoyao Li
2026-09-03 8:57 ` Binbin Wu
2026-08-27 3:18 ` [PATCH v3 2/4] KVM: TDX: Report CORE_CAPABILITIES as configurable Binbin Wu
2026-09-01 6:45 ` Tony Lindgren
2026-09-02 17:43 ` Kishen Maloor
[not found] ` <d47c8cc6-242b-4ebf-89f2-0909abdaadd5@linux.intel.com>
2026-09-03 6:10 ` Kishen Maloor
2026-09-03 8:12 ` Binbin Wu
2026-08-27 3:18 ` [PATCH v3 3/4] KVM: TDX: Filter configurable CPUID bits Binbin Wu
2026-09-01 6:44 ` Tony Lindgren
2026-09-01 8:42 ` Binbin Wu
2026-09-01 9:09 ` Tony Lindgren
2026-09-03 8:04 ` Xiaoyao Li
2026-09-03 8:23 ` Binbin Wu
2026-08-27 3:18 ` [PATCH v3 4/4] KVM: TDX: Validate userspace CPUID input for KVM_TDX_INIT_VM Binbin Wu
2026-08-27 3:24 ` sashiko-bot
2026-08-27 7:25 ` Binbin Wu
2026-09-01 6:47 ` Tony Lindgren
2026-08-27 19:33 ` [PATCH v3 0/4] KVM: TDX: Validate directly configurable CPUID bits Edgecombe, Rick P
2026-08-28 3:19 ` Binbin Wu
2026-08-28 16:58 ` Edgecombe, Rick P
2026-08-31 5:01 ` Binbin Wu
2026-09-01 9:42 ` Xiaoyao Li
2026-09-01 10:21 ` Xiaoyao Li
2026-09-02 16:09 ` Edgecombe, Rick P
2026-09-02 16:21 ` Binbin Wu
2026-09-01 9:38 ` Xiaoyao Li
2026-09-01 17:41 ` Edgecombe, Rick P
2026-09-02 10:29 ` Xiaoyao Li
2026-09-02 13:13 ` Edgecombe, Rick P
2026-09-02 13:39 ` Xiaoyao Li
2026-09-02 13:53 ` Edgecombe, Rick P
2026-09-02 14:21 ` Xiaoyao Li
2026-09-02 16:26 ` Binbin Wu
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