Messages in this thread | | | Date | Fri, 24 Apr 2015 11:27:30 +0200 (CEST) | From | Jiri Kosina <> | Subject | Re: [RFC 0/4] arm64: add livepatch support |
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On Fri, 24 Apr 2015, AKASHI Takahiro wrote:
> This patchset enables livepatch support on arm64. > > Livepatch was merged in v4.0, and allows replacying a function dynamically > based on ftrace framework, but it also requires -mfentry option of gcc. > Currently arm64 gcc doesn't support it, but by adding a helper function to > ftrace, we will be able to support livepatch on arch's which don't support > this option. > > I submit this patchset as RFC since I'm not quite sure that I'm doing > in the right way, or we should definitely support -fentry instead.
I don't have arm64 cross-compiler handy, could you please copy/paste how does function prologue, generated by gcc -pg on arm64 look like?
Thanks,
-- Jiri Kosina SUSE Labs
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