linux-kernel - RE: [PATCH v16 2/5] x86/cpufeatures: Add X86_FEATURE_SGX

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Message-ID: <IA1PR11MB94951925BFFE305C5ED5589AE7F6A@IA1PR11MB9495.namprd11.prod.outlook.com>
Date: Fri, 17 Oct 2025 06:19:09 +0000
From: "Reshetova, Elena" <elena.reshetova@...el.com>
To: "Hansen, Dave" <dave.hansen@...el.com>
CC: "jarkko@...nel.org" <jarkko@...nel.org>, "seanjc@...gle.com"
	<seanjc@...gle.com>, "Huang, Kai" <kai.huang@...el.com>, "mingo@...nel.org"
	<mingo@...nel.org>, "linux-sgx@...r.kernel.org" <linux-sgx@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"x86@...nel.org" <x86@...nel.org>, "Mallick, Asit K"
	<asit.k.mallick@...el.com>, "Scarlata, Vincent R"
	<vincent.r.scarlata@...el.com>, "Cai, Chong" <chongc@...gle.com>, "Aktas,
 Erdem" <erdemaktas@...gle.com>, "Annapurve, Vishal" <vannapurve@...gle.com>,
	"Bondarevska, Nataliia" <bondarn@...gle.com>, "Raynor, Scott"
	<scott.raynor@...el.com>, Dave Hansen <dave.hansen@...ux.intel.com>
Subject: RE: [PATCH v16 2/5] x86/cpufeatures: Add X86_FEATURE_SGX_EUPDATESVN
 feature flag

> -----Original Message-----
> From: Hansen, Dave <dave.hansen@...el.com>
> Sent: Friday, October 17, 2025 12:41 AM
> To: Reshetova, Elena <elena.reshetova@...el.com>
> Cc: jarkko@...nel.org; seanjc@...gle.com; Huang, Kai
> <kai.huang@...el.com>; mingo@...nel.org; linux-sgx@...r.kernel.org; linux-
> kernel@...r.kernel.org; x86@...nel.org; Mallick, Asit K
> <asit.k.mallick@...el.com>; Scarlata, Vincent R <vincent.r.scarlata@...el.com>;
> Cai, Chong <chongc@...gle.com>; Aktas, Erdem <erdemaktas@...gle.com>;
> Annapurve, Vishal <vannapurve@...gle.com>; Bondarevska, Nataliia
> <bondarn@...gle.com>; Raynor, Scott <scott.raynor@...el.com>; Dave Hansen
> <dave.hansen@...ux.intel.com>
> Subject: Re: [PATCH v16 2/5] x86/cpufeatures: Add
> X86_FEATURE_SGX_EUPDATESVN feature flag
> 
> On 10/15/25 23:38, Reshetova, Elena wrote:
> > Sure, will do, thanks!
> > Previous version was based on x86_tip/master
> 
> Just FWIW, that means very little. During the merge window it should
> _mostly_ be gunk that's already gone up for -rc1. But it might also
> contain cruft that _didn't_ go up and needs another cycle.
> 
> Please just base things on a tag in Linus's tree unless you have an
> explicit, known, called-out-in-your-changelog dependency on something in
> tip.
> 
> tl;dr: Basing on tip/x86/master was a bug here, not a feature.

Thank you very much for explaining! I didn’t know how x86_tip is managed,
now it is clear also for future.  

And thank you for pulling the patches in!

Best Regards,
Elena.