From: liuj97@gmail.com (Jiang Liu)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 0/7] Optimize jump label implementation on ARM64
Date: Mon, 14 Oct 2013 23:57:29 +0800 [thread overview]
Message-ID: <525C1469.4000906@gmail.com> (raw)
In-Reply-To: <20131014154044.GR25034@n2100.arm.linux.org.uk>
On 10/14/2013 11:40 PM, Russell King - ARM Linux wrote:
> 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. :(
>
We need to do the same trick for ARM64 too:)
next prev parent reply other threads:[~2013-10-14 15:57 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
2013-10-14 15:57 ` Jiang Liu [this message]
2013-10-14 16:04 ` Russell King - ARM Linux
2013-10-14 16:41 ` Will Deacon
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