From: Steven Rostedt <rostedt@goodmis.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: Denys Vlasenko <vda.linux@googlemail.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Andy Lutomirski <luto@amacapital.net>,
Denys Vlasenko <dvlasenk@redhat.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Borislav Petkov <bp@alien8.de>, 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 ML <x86@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/4] x86: entry.S: tidy up several suboptimal insns
Date: Thu, 26 Feb 2015 07:47:22 -0500 [thread overview]
Message-ID: <20150226074722.58c53126@grimm.local.home> (raw)
In-Reply-To: <20150226114703.GA4660@gmail.com>
On Thu, 26 Feb 2015 12:47:03 +0100
Ingo Molnar <mingo@kernel.org> wrote:
> So the main question here is not whether it's worth doing
> it, the question is the cost of the removal:
>
> - the change in syscall number overflow handling
> behavior. (We might not want the new behavior)
>
> - the increase in the syscall table size.
Yep, totally agree.
-- Steve
next prev parent reply other threads:[~2015-02-26 12:46 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-24 18:51 Denys Vlasenko
2015-02-24 18:51 ` [PATCH 2/4] x86: get rid of KERNEL_STACK_OFFSET Denys Vlasenko
2015-02-24 19:30 ` Steven Rostedt
2015-02-24 20:02 ` Denys Vlasenko
2015-02-24 22:37 ` Andy Lutomirski
2015-02-25 9:45 ` Ingo Molnar
2015-02-25 16:14 ` Andy Lutomirski
2015-02-26 11:42 ` Ingo Molnar
2015-02-26 15:21 ` Andy Lutomirski
2015-02-26 15:29 ` Andy Lutomirski
2015-02-25 8:53 ` Ingo Molnar
2015-02-25 12:48 ` Denys Vlasenko
2015-02-25 13:25 ` Denys Vlasenko
2015-02-25 13:53 ` Ingo Molnar
2015-02-24 18:51 ` [PATCH 3/4] x86: save r11 into pt_regs->eflags on SYSCALL64 fastpath Denys Vlasenko
2015-02-24 22:44 ` Andy Lutomirski
2015-02-24 18:51 ` [PATCH 4/4] x86: save user %rsp in pt_regs->sp Denys Vlasenko
2015-02-24 22:55 ` Andy Lutomirski
2015-02-24 19:58 ` [PATCH 1/4] x86: entry.S: tidy up several suboptimal insns Borislav Petkov
2015-02-24 20:13 ` Denys Vlasenko
2015-02-24 20:36 ` Borislav Petkov
2015-02-24 22:51 ` H. Peter Anvin
2015-02-24 22:25 ` Andy Lutomirski
2015-02-24 22:52 ` H. Peter Anvin
2015-02-24 22:56 ` Andy Lutomirski
2015-02-24 23:01 ` H. Peter Anvin
2015-02-24 23:03 ` Andy Lutomirski
2015-02-24 23:26 ` Denys Vlasenko
2015-02-25 9:20 ` Ingo Molnar
2015-02-25 9:27 ` H. Peter Anvin
2015-02-25 9:39 ` Ingo Molnar
2015-02-25 14:43 ` Steven Rostedt
2015-02-25 15:40 ` Denys Vlasenko
2015-02-25 16:01 ` Steven Rostedt
2015-02-25 16:06 ` Borislav Petkov
2015-02-26 11:47 ` Ingo Molnar
2015-02-26 12:47 ` Steven Rostedt [this message]
2015-02-26 12:50 ` Steven Rostedt
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