From: Josh Poimboeuf <jpoimboe@redhat.com>
To: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
pabeni@redhat.com, Jens Axboe <axboe@kernel.dk>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
bp@alien8.de, Peter Anvin <hpa@zytor.com>,
the arch/x86 maintainers <x86@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Andrew Lutomirski <luto@kernel.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
dvlasenk@redhat.com, brgerst@gmail.com,
Linux List Kernel Mailing <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] x86: only use ERMS for user copies for larger sizes
Date: Fri, 23 Nov 2018 10:40:52 -0600 [thread overview]
Message-ID: <20181123164052.cjbm5ekqigvfpl7t@treble> (raw)
In-Reply-To: <20181122111341.GA107459@gmail.com>
On Thu, Nov 22, 2018 at 12:13:41PM +0100, Ingo Molnar wrote:
> Note to self: watch out for patches that change altinstructions and don't
> make premature vmlinux size impact assumptions. :-)
I noticed a similar problem with ORC data. As it turns out, size's
"text" calculation also includes read-only sections. That includes
.rodata and anything else not writable.
Maybe we need a more sensible "size" script for the kernel. It would be
trivial to implement based on the output of "readelf -S vmlinux".
--
Josh
next prev parent reply other threads:[~2018-11-23 16:41 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <02bfc577-32a5-66be-64bf-d476b7d447d2@kernel.dk>
2018-11-20 20:24 ` Jens Axboe
2018-11-21 6:36 ` Ingo Molnar
2018-11-21 13:32 ` Jens Axboe
2018-11-21 13:44 ` Denys Vlasenko
2018-11-22 17:36 ` David Laight
2018-11-22 17:52 ` Linus Torvalds
2018-11-22 18:06 ` Andy Lutomirski
2018-11-22 18:58 ` Linus Torvalds
2018-11-23 9:34 ` David Laight
2018-11-23 10:12 ` David Laight
2018-11-23 16:36 ` Linus Torvalds
2018-11-23 17:42 ` Linus Torvalds
2018-11-23 18:39 ` Andy Lutomirski
2018-11-23 18:44 ` Linus Torvalds
2018-11-23 19:11 ` Andy Lutomirski
2018-11-26 10:12 ` David Laight
2018-11-26 10:01 ` David Laight
2018-11-26 10:26 ` David Laight
2019-01-05 2:38 ` Linus Torvalds
2019-01-07 9:55 ` David Laight
2019-01-07 17:43 ` Linus Torvalds
2019-01-08 9:10 ` David Laight
2019-01-08 18:01 ` Linus Torvalds
2018-11-21 13:45 ` Paolo Abeni
2018-11-21 17:27 ` Linus Torvalds
2018-11-21 18:04 ` Jens Axboe
2018-11-21 18:26 ` Andy Lutomirski
2018-11-21 18:43 ` Linus Torvalds
2018-11-21 22:38 ` Andy Lutomirski
2018-11-21 18:16 ` Linus Torvalds
2018-11-21 19:01 ` Linus Torvalds
2018-11-22 10:32 ` Ingo Molnar
2018-11-22 11:13 ` Ingo Molnar
2018-11-22 11:21 ` Ingo Molnar
2018-11-23 16:40 ` Josh Poimboeuf [this message]
2018-11-22 16:55 ` Linus Torvalds
2018-11-22 17:26 ` Andy Lutomirski
2018-11-22 17:35 ` Linus Torvalds
2018-11-24 6:09 ` Jens Axboe
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