From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 0/7] Optimize jump label implementation on ARM64
Date: Mon, 14 Oct 2013 16:40:44 +0100 [thread overview]
Message-ID: <20131014154044.GR25034@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <1381675827-1610-1-git-send-email-liuj97@gmail.com>
On Sun, Oct 13, 2013 at 10:50:20PM +0800, Jiang Liu wrote:
> To enable this feature, your toolchain must support "asm goto" extension
> and "%c" constraint extesion. Current GCC for AARCH64 doesn't support
> "%c", so you need a GCC patch similiar to this:
Oh god, not that again. I've no idea why ARM stuff has such a problem with
supporting this very useful "%c" GCC constraint. Aarch32 didn't for ages
consequently we now have horrid hacks around it in the kernel source
because our compilers suck. Seems Aarch64 is doomed to repeat the same
stupid mistakes. :(
next prev parent reply other threads:[~2013-10-14 15:40 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-13 14:50 [PATCH v2 0/7] Optimize jump label implementation on ARM64 Jiang Liu
2013-10-13 14:50 ` [PATCH v2 1/7] arm64: introduce basic aarch64 instruction decoding helpers Jiang Liu
2013-10-13 14:50 ` [PATCH v2 2/7] arm64: introduce interfaces to hotpatch kernel and module code Jiang Liu
2013-10-13 14:50 ` [PATCH v2 3/7] arm64: move encode_insn_immediate() from module.c to insn.c Jiang Liu
2013-10-13 14:50 ` [PATCH v2 4/7] arm64: introduce aarch64_insn_gen_{nop|branch_imm}() helper functions Jiang Liu
2013-10-14 14:24 ` [PATCH] " Jiang Liu
2013-10-13 14:50 ` [PATCH v2 5/7] arm64, jump label: detect %c support for ARM64 Jiang Liu
2013-10-13 14:50 ` [PATCH v2 6/7] arm64, jump label: optimize jump label implementation Jiang Liu
2013-10-13 14:50 ` [PATCH v2 7/7] jump_label: use defined macros instead of hard-coding for better readability Jiang Liu
2013-10-14 15:19 ` [PATCH v2 0/7] Optimize jump label implementation on ARM64 Will Deacon
2013-10-14 15:24 ` Jiang Liu
2013-10-14 15:40 ` Russell King - ARM Linux [this message]
2013-10-14 15:57 ` Jiang Liu
2013-10-14 16:04 ` Russell King - ARM Linux
2013-10-14 16:41 ` Will Deacon
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=20131014154044.GR25034@n2100.arm.linux.org.uk \
--to=linux@arm.linux.org.uk \
--cc=linux-arm-kernel@lists.infradead.org \
/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.
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).