linux-kernel - Re: [PATCH 4/4] x86: entry_64.S: remove unused thread

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Message-ID: <20150311125552.GA3359@pd.tnic>
Date:	Wed, 11 Mar 2015 13:55:52 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Denys Vlasenko <dvlasenk@...hat.com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	"H. Peter Anvin" <hpa@...or.com>, Oleg Nesterov <oleg@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Alexei Starovoitov <ast@...mgrid.com>,
	Will Drewry <wad@...omium.org>,
	Kees Cook <keescook@...omium.org>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] x86: entry_64.S: remove unused thread_struct::usersp

On Tue, Mar 10, 2015 at 11:45:07AM +0100, Denys Vlasenko wrote:
> @@ -894,11 +893,6 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk);
>  #define task_pt_regs(tsk)	((struct pt_regs *)(tsk)->thread.sp0 - 1)
>  extern unsigned long KSTK_ESP(struct task_struct *task);
>  
> -/*
> - * User space RSP while inside the SYSCALL fast path
> - */
> -DECLARE_PER_CPU(unsigned long, old_rsp);

Please grep the whole arch/x86/ tree for old_rsp as there are more
leftovers.

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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