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SubjectRe: [PATCH] reduce the time of finding symbols for module
Hi Li,

On Wed, Mar 29, 2017 at 4:50 AM, Li Bin <> wrote:
> Hi,
> Yeah, from 2014, we started to work on livepatch support on aarch64, and
> in May 2015, we pushed the solution to the livepatch community[1] and gcc
> community (mfentry feature on aarch64)[2]. And then, there were an another
> gcc solution from linaro [3], which proposes to implement a new option
> -fprolog-pad=N that generate a pad of N nops at the beginning of each
> function, and AFAIK, Torsten Duwe from SUSE is still discussing this method
> with gcc community.
> At this stage, we are validating the livepatch support on aarch64 based on
> aarch64 mfentry feature. When the community has a clear plan, we are happy
> to make adaptation and contribute our related work to the community, including
> the kpatch-build support :-)
> [1] livepatch: add support on arm64
> [2] [AArch64] support -mfentry feature for arm64
> [3] Kernel livepatching support in GCC
> [4] arm64: ftrace with regs for livepatch support

Since there is already -fpatchable-function-entry option committed by Torsten
to gcc on 25 Jul [1], have you restarted your activities with AArch64 livepatch
If yes, I'm interested in testing of that feature/patches on our hardware



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