linux-kernel - Re: [RFC PATCH 1/6] x86/virt/tdx: Add SEAMCALL wrappers for TDX KeyID management

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: <bbf78f64-62c7-4a82-b85b-d5227d65e5d0@intel.com>
Date: Fri, 22 Nov 2024 15:59:31 -0800
From: Dave Hansen <dave.hansen@...el.com>
To: Sean Christopherson <seanjc@...gle.com>
Cc: Rick Edgecombe <rick.p.edgecombe@...el.com>, kvm@...r.kernel.org,
 pbonzini@...hat.com, isaku.yamahata@...il.com, kai.huang@...el.com,
 linux-kernel@...r.kernel.org, tony.lindgren@...ux.intel.com,
 xiaoyao.li@...el.com, yan.y.zhao@...el.com, x86@...nel.org,
 adrian.hunter@...el.com, Isaku Yamahata <isaku.yamahata@...el.com>,
 Binbin Wu <binbin.wu@...ux.intel.com>, Yuan Yao <yuan.yao@...el.com>
Subject: Re: [RFC PATCH 1/6] x86/virt/tdx: Add SEAMCALL wrappers for TDX KeyID
 management

On 11/22/24 15:55, Sean Christopherson wrote:
>> You know that 'tdr' is not just some random physical address.  It's a
>> whole physical page.  It's page-aligned.  It was allocated, from the
>> allocator.  It doesn't point to special memory.
> Oh, but it does point to special memory. 

In this specific case I meant "special memory" as not RAM and not
managed by the kernel.