linux-kernel - Re: [PATCH 5/6] x86/shstk: don't create the shadow stack for PF_USER

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Message-ID: <20250815191306.GK11549@redhat.com>
Date: Fri, 15 Aug 2025 21:13:06 +0200
From: Oleg Nesterov <oleg@...hat.com>
To: "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
Cc: "debug@...osinc.com" <debug@...osinc.com>,
	"mingo@...nel.org" <mingo@...nel.org>,
	"bp@...en8.de" <bp@...en8.de>,
	"broonie@...nel.org" <broonie@...nel.org>,
	"peterz@...radead.org" <peterz@...radead.org>,
	"hpa@...or.com" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
	"Mehta, Sohil" <sohil.mehta@...el.com>,
	"axboe@...nel.dk" <axboe@...nel.dk>,
	"x86@...nel.org" <x86@...nel.org>
Subject: Re: [PATCH 5/6] x86/shstk: don't create the shadow stack for
 PF_USER_WORKERs

Rick,

I'll try to write another email and send V2 next week.

Although perhaps I'll send some other unrelated and "obvious" cleanups
before that...

Until then:

On 08/15, Edgecombe, Rick P wrote:
>
> Maybe you can explain

Damn yes, agreed, my fault.

> Stop me if I'm telling you something you already know...

Or, quite possibly, you should stop me to send the patches which change
the code I can hardly understand ;) And that is why I CC'ed the experts
like you.

See you next week,

Oleg.