From: Szabolcs Nagy <nsz@port70.net>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Rich Felker <dalias@libc.org>,
musl@lists.openwall.com, Kees Cook <keescook@chromium.org>,
linux-arm-kernel@lists.infradead.org,
Andy Lutomirski <luto@amacapital.net>
Subject: Re: Re: Thread pointer changes
Date: Sat, 28 Jun 2014 18:37:36 +0200 [thread overview]
Message-ID: <20140628163734.GV23102@port70.net> (raw)
In-Reply-To: <20140627231224.GY32514@n2100.arm.linux.org.uk>
* Russell King - ARM Linux <linux@arm.linux.org.uk> [2014-06-28 00:12:24 +0100]:
> On Sat, Jun 28, 2014 at 12:40:17AM +0200, Szabolcs Nagy wrote:
> > but cp15 barrier is deprecated on armv7+
>
> Can you _please_ read all my replies and stop cherry picking what you
> want? There's many of you, and only one of me - please do me the
> effort of fully reading my replies before replying on points I've
> already included.
I've read it, we knew about uname, /proc and the TLS HWCAP flag,
and i thought it's clear that uname is inappropriate for determining
isa features because we don't know the arm naming scheme used in the
future..
so the situation is
- dmb vs cp15 dispatch needs extra uname syscall and fragile string
parsing at program startup
- there is no reasonable way to determine kuser page availability
on armv6k+ if pax kernel needs to be supported (asking the system
integrator or using process_vm_readv are not reasonable)
- there is no reasonable way to determine if the system is smp and
needs barriers (parsing /proc/cpuinfo is not reasonable)
next prev parent reply other threads:[~2014-06-28 16:37 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-10 7:28 Rich Felker
2014-06-11 14:55 ` Rich Felker
2014-06-27 19:27 ` Andy Lutomirski
2014-06-27 20:09 ` Russell King - ARM Linux
2014-06-27 21:09 ` Szabolcs Nagy
2014-06-27 21:30 ` Russell King - ARM Linux
2014-06-27 21:47 ` Andy Lutomirski
2014-06-27 21:58 ` Rich Felker
2014-06-27 21:55 ` Rich Felker
2014-06-27 22:17 ` Russell King - ARM Linux
2014-06-27 22:25 ` Andy Lutomirski
2014-06-27 22:54 ` Russell King - ARM Linux
2014-06-28 0:11 ` Rich Felker
2014-06-27 22:33 ` Rich Felker
2014-06-27 23:07 ` Russell King - ARM Linux
2014-06-27 23:17 ` Andy Lutomirski
2014-06-27 23:35 ` Russell King - ARM Linux
2014-06-27 23:40 ` Andy Lutomirski
2014-06-30 15:38 ` [musl] " Christopher Covington
2014-07-02 21:16 ` Rich Felker
2014-06-28 0:20 ` Rich Felker
2014-06-27 22:40 ` Szabolcs Nagy
2014-06-27 22:51 ` Andy Lutomirski
2014-06-27 23:12 ` Russell King - ARM Linux
2014-06-28 16:37 ` Szabolcs Nagy [this message]
2014-06-27 21:37 ` Rich Felker
2014-06-27 22:04 ` Russell King - ARM Linux
2014-06-27 22:26 ` Rich Felker
2014-06-27 23:03 ` Russell King - ARM Linux
2014-06-28 7:09 ` u-igbb
2014-06-27 23:20 ` Russell King - ARM Linux
2014-06-28 0:38 ` Rich Felker
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20140628163734.GV23102@port70.net \
--to=nsz@port70.net \
--cc=dalias@libc.org \
--cc=keescook@chromium.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux@arm.linux.org.uk \
--cc=luto@amacapital.net \
--cc=musl@lists.openwall.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/musl/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).