Re: [PATCH 0/8] unwind, arm64: add sframe unwinder for kernel
Josh Poimboeuf <[email protected]>
| Newsgroups | org.kernel.vger.linux-toolchains,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-kernel,org.kernel.vger.live-patching |
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| Message-ID | <20250218063702.e2qrpjk4ylhnk5s7@jpoimboe> |
On Mon, Feb 17, 2025 at 08:38:22PM -0800, Song Liu wrote: > On Fri, Feb 14, 2025 at 3:23 PM Josh Poimboeuf <[email protected]> wrote: > > Poking around the arm64 module code, arch/arm64/kernel/module-plts.c > > is looking at all the relocations in order to set up the PLT. That also > > needs to be done for klp relas, or are your patches already doing that? > > I don't think either version (this set and my RFC) added logic for PLT. > There is some rela logic on the kpatch-build side. But I am not sure > whether it is sufficient. The klp relas looked ok. I didn't see any signs of kpatch-build doing anything wrong. AFAICT the problem is that module-plts.c creates PLT entries for regular relas but not klp relas. -- Josh