linux-kernel - Re: [PATCH v3 23/26] x86/virt/tdx: Enable TDX Module runtime updates

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] [day] [month] [year] [list]

Message-ID: <aYMZXjWE2LDZARSn@tlindgre-MOBL1>
Date: Wed, 4 Feb 2026 12:03:10 +0200
From: Tony Lindgren <tony.lindgren@...ux.intel.com>
To: Chao Gao <chao.gao@...el.com>
Cc: linux-coco@...ts.linux.dev, linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org, x86@...nel.org, reinette.chatre@...el.com,
	ira.weiny@...el.com, kai.huang@...el.com, dan.j.williams@...el.com,
	yilun.xu@...ux.intel.com, sagis@...gle.com, vannapurve@...gle.com,
	paulmck@...nel.org, nik.borisov@...e.com, zhenzhong.duan@...el.com,
	seanjc@...gle.com, rick.p.edgecombe@...el.com, kas@...nel.org,
	dave.hansen@...ux.intel.com, vishal.l.verma@...el.com,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH v3 23/26] x86/virt/tdx: Enable TDX Module runtime updates

On Mon, Jan 26, 2026 at 01:14:07PM +0200, Tony Lindgren wrote:
> On Fri, Jan 23, 2026 at 06:55:31AM -0800, Chao Gao wrote:
> > --- a/arch/x86/include/asm/tdx.h
> > +++ b/arch/x86/include/asm/tdx.h
> > @@ -32,6 +32,9 @@
> >  #define TDX_SUCCESS		0ULL
> >  #define TDX_RND_NO_ENTROPY	0x8000020300000000ULL
> >  
> > +/* Bit definitions of TDX_FEATURES0 metadata field */
> > +#define TDX_FEATURES0_TD_PRESERVING	BIT(1)
> > +#define TDX_FEATURES0_NO_RBP_MOD	BIT(18)
> >  #ifndef __ASSEMBLER__
> >  
> >  #include <uapi/asm/mce.h>
> 
> How about let's put these defines into arch/x86/include/asm/shared/tdx.h
> instead? And use BIT_ULL?

Sorry I was confused. No need to move these defines to
arch/x86/include/asm/shared/tdx.h as far as I can tell.

The BIT_ULL comment still remains though.

Regards,

Tony