linux-kernel - Re: [PATCH v2 2/2] KVM: TDX: WARN if a SEAMCALL VM-Exit makes its way out to KVM

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4385b47e-391e-460a-8646-a499747d738e@linux.intel.com>
Date: Fri, 17 Oct 2025 13:29:22 +0800
From: Binbin Wu <binbin.wu@...ux.intel.com>
To: Sean Christopherson <seanjc@...gle.com>
Cc: Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org,
 linux-kernel@...r.kernel.org, Kai Huang <kai.huang@...el.com>,
 Xiaoyao Li <xiaoyao.li@...el.com>,
 Rick Edgecombe <rick.p.edgecombe@...el.com>,
 Dan Williams <dan.j.williams@...el.com>
Subject: Re: [PATCH v2 2/2] KVM: TDX: WARN if a SEAMCALL VM-Exit makes its way
 out to KVM



On 10/17/2025 2:21 AM, Sean Christopherson wrote:
> WARN if KVM observes a SEAMCALL VM-Exit while running a TD guest, as the
> TDX-Module is supposed to inject a #UD, per the "Unconditionally Blocked
> Instructions" section of the TDX-Module base specification.
>
> Reported-by: Xiaoyao Li <xiaoyao.li@...el.com>
> Signed-off-by: Sean Christopherson <seanjc@...gle.com>

Reviewed-by: Binbin Wu <binbin.wu@...ux.intel.com>