On Mon, Apr 27, 2020 at 08:22:03AM -0400, Joe Lawrence wrote: > On 4/25/20 7:07 AM, Josh Poimboeuf wrote: > > v3: > > - klp: split klp_write_relocations() into object/section specific > > functions [joe] > > - s390: fix plt/got writes [joe] > > - s390: remove text_mutex usage [mbenes] > > - x86: do text_poke_sync() before releasing text_mutex [peterz] > > - split x86 text_mutex changes into separate patch [mbenes] > > > > v2: > > - add vmlinux.ko check [peterz] > > - remove 'klp_object' forward declaration [mbenes] > > - use text_mutex [jeyu] > > - fix documentation TOC [jeyu] > > - fix s390 issues [mbenes] > > - upstream kpatch-build now supports this > > (though it's only enabled for Linux >= 5.8) > > > > These patches add simplifications and improvements for some issues Peter > > found six months ago, as part of his non-writable text code (W^X) > > cleanups. > > > > Highlights: > > > > - Remove the livepatch arch-specific .klp.arch sections, which were used > > to do paravirt patching and alternatives patching for livepatch > > replacement code. > > > > - Add support for jump labels in patched code. Nit: support for the hopefully common cases anyway: jump labels whose keys are not going to require late-module klp-relocation (defined in an unloaded module). > > > > - Remove the last module_disable_ro() usage. > > > > For more background, see this thread: > > > > https://lkml.kernel.org/r/20191021135312.jbbxsuipxldocdjk@treble > > > > This has been tested with kpatch-build integration tests and klp-convert > > selftests. > > > > Hi Josh, > > I've added some late module patching tests for klp-convert as well as > extended the existing ones. I'll put them on-top of v3 and give it some > test runs today (x86, ppc64le, s390x) and report back. Ok all three arches look good with the klp-convert WIP tests. For reference, I pushed the combined branch up to github [1] if anyone else wants to see the klp-relocations in action first hand. For the series: Acked-by: Joe Lawrence <joe.lawrence@xxxxxxxxxx> [1] https://github.com/joe-lawrence/linux/tree/jp-v3-klp-convert -- Joe
