Re: [PATCH RT 27/32] x86/fpu: Dont cache access to fpu_fpregs_owner_ctx

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To: Steven Rostedt <rostedt@xxxxxxxxxxx>
Subject: Re: [PATCH RT 27/32] x86/fpu: Dont cache access to fpu_fpregs_owner_ctx
From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Date: Wed, 22 Jan 2020 09:43:52 +0100
Cc: linux-kernel@xxxxxxxxxxxxxxx, linux-rt-users <linux-rt-users@xxxxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Carsten Emde <C.Emde@xxxxxxxxx>, John Kacur <jkacur@xxxxxxxxxx>, Julia Cartwright <julia@xxxxxx>, Daniel Wagner <wagi@xxxxxxxxx>, Tom Zanussi <zanussi@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxx>, Rik van Riel <riel@xxxxxxxxxxx>, Aubrey Li <aubrey.li@xxxxxxxxx>, Austin Clements <austin@xxxxxxxxxx>, Barret Rhoden <brho@xxxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxx>, David Chase <drchase@xxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, ian@xxxxxxxx, Ingo Molnar <mingo@xxxxxxxxxx>, Josh Bleecher Snyder <josharian@xxxxxxxxx>, x86-ml <x86@xxxxxxxxxx>, stable-rt@xxxxxxxxxxxxxxx
In-reply-to: <20200117174131.455165326@goodmis.org>
References: <20200117174111.282847363@goodmis.org> <20200117174131.455165326@goodmis.org>

On 2020-01-17 12:41:38 [-0500], Steven Rostedt wrote:
> 4.19.94-rt39-rc1 stable review patch.
> If anyone has any objections, please let me know.
> 
…
> Fixes: 5f409e20b7945 ("x86/fpu: Defer FPU state load until return to userspace")

This isn't needed for the v4.19 tree. As far as I can tell, there is no
"Defer FPU state load until return to userspace" in it.

Sebastian

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