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Date: Wed, 11 Mar 2015 13:55:52 +0100
From: Borislav Petkov <bp@alien8.de>
To: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Steven Rostedt <rostedt@goodmis.org>, "H. Peter Anvin" <hpa@zytor.com>,
        Oleg Nesterov <oleg@redhat.com>,
        Frederic Weisbecker <fweisbec@gmail.com>,
        Alexei Starovoitov <ast@plumgrid.com>, Will Drewry <wad@chromium.org>,
        Kees Cook <keescook@chromium.org>, x86@kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 4/4] x86: entry_64.S: remove unused thread_struct::usersp
Message-ID: <20150311125552.GA3359@pd.tnic>
References: <1425984307-2143-1-git-send-email-dvlasenk@redhat.com>
 <1425984307-2143-2-git-send-email-dvlasenk@redhat.com>
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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.
--