On Tue, Oct 10, 2023 at 12:16:21PM +0200, Peter Zijlstra wrote: > On Tue, Oct 10, 2023 at 12:10:56PM +0200, Peter Zijlstra wrote: > > > That said, I don't particularly like the patch, I think it should, at > > the veyr least, cover all of apply_alternatives, not just > > text_poke_early(). > > kasan_arch_is_ready() is another option, x86 doesn't currently define > that, but that would allow us to shut kasan down harder around patching. > Not sure if it's worth the trouble though. IIUC, it was intended to delay KASAN usage until it is ready. KASAN is functional well before apply_alternatives() and making kasan_arch_is_ready() temporary false for patching feels like abuse of the hook. -- Kiryl Shutsemau / Kirill A. Shutemov
