linux-kernel - [PATCH v3 0/1] x86/shstk: don't create the shadow stack for PF_USER

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Message-ID: <20250903134126.GA27641@redhat.com>
Date: Wed, 3 Sep 2025 15:41:26 +0200
From: Oleg Nesterov <oleg@...hat.com>
To: Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Deepak Gupta <debug@...osinc.com>, "H. Peter Anvin" <hpa@...or.com>,
	Ingo Molnar <mingo@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Mark Brown <broonie@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Rick Edgecombe <rick.p.edgecombe@...el.com>,
	Sohil Mehta <sohil.mehta@...el.com>,
	Thomas Gleixner <tglx@...utronix.de>
Cc: linux-kernel@...r.kernel.org, x86@...nel.org
Subject: [PATCH v3 0/1] x86/shstk: don't create the shadow stack for
 PF_USER_WORKERs

Dave, et al, please review.

Our discussion with Rick was confusing and we can't convince each other.
Perhaps this is my fault. So let me resend 4/5 from this series

	[PATCH v2 0/5] x86/fpu: don't abuse x86_task_fpu(PF_USER_WORKER) in .regset_get() paths
	https://lore.kernel.org/all/20250822153603.GA27103@redhat.com/

as a separate patch. I tried to update the changelog.

Again, to me it looks like a simple cleanup which makes sense regardless,
but please correct me if I am wrong.

Oleg.