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SubjectRe: [PATCH v2 0/7] Optimize jump label implementation on ARM64
On Sun, Oct 13, 2013 at 03:50:20PM +0100, Jiang Liu wrote:
> From: Jiang Liu <>
> This patchset tries to optimize arch specfic jump label implementation
> for ARM64 by dynamic kernel text patching.
> 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:

Right, but this is just for the ARM (AArch32) backend afaict. Are there any
plans for upstream GCC to support this constraint for AArch64?


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