Messages in this thread | | | Date | Mon, 14 Oct 2013 16:19:38 +0100 | From | Will Deacon <> | Subject | Re: [PATCH v2 0/7] Optimize jump label implementation on ARM64 |
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On Sun, Oct 13, 2013 at 03:50:20PM +0100, Jiang Liu wrote: > From: Jiang Liu <jiang.liu@huawei.com> > > 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: > http://gcc.gnu.org/viewcvs/gcc/trunk/gcc/config/arm/arm.c?view=patch&r1=175293&r2=175565&pathrev=175565 > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48637
Right, but this is just for the ARM (AArch32) backend afaict. Are there any plans for upstream GCC to support this constraint for AArch64?
Will
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