linux-kernel - Re: [PATCH 1/3] x86: Don't save/restore EFLAGS on task switch

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Date:	Wed, 4 May 2016 20:27:14 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	Brian Gerst <brgerst@...il.com>
Cc:	X86 ML <x86@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Borislav Petkov <bp@...e.de>
Subject: Re: [PATCH 1/3] x86: Don't save/restore EFLAGS on task switch

On Wed, May 4, 2016 at 7:44 PM, Brian Gerst <brgerst@...il.com> wrote:
> Now that NT is filtered by the SYSENTER entry code, it is safe to skip saving and
> restoring flags on task switch.  Also remove a leftover reset of flags on 64-bit
> fork.

Acked-by: Andy Lutomirski <luto@...nel.org>