On 2026-02-26 at 15:29:15 -0800, Dave Hansen wrote: >On 2/24/26 01:10, Maciej Wieczor-Retman wrote: >>>> - ffdf000000000000 | -8.25 PB | fffffbffffffffff | ~8 PB | KASAN >>>> shadow memory >>>> + ffdf000000000000 | -8.25 PB | fffffbffffffffff | ~8 PB | KASAN >>>> shadow memory (generic mode) >>>> + ffeffc0000000000 | -6 PB | fffffbffffffffff | 4 PB | KASAN >>>> shadow memory (software tag-based mode) >>>> >>>> __________________|____________|__________________|_________|____________________________________________________________ >>> I think the idea of these is that you can run through, find *one* range >>> and know what a given address maps to. This adds overlapping ranges. >>> Could you make it clear that part of the area is "generic mode" only and >>> the other part is for generic mode and for "software tag-based mode"? >> Boris suggested adding a footnote to clarify these are alternative ranges >> [1]. >> Perhaps I can add a star '*' next to these two so it can notify someone to >> look for >> the footnote? >> >> [1] https://lore.kernel.org/ >> all/20260113161047.GNaWZuh21aoxqtTNXS@fat_crate.local/ > > >I'd rather this be: > > ffdf000000000000 | -8.25 PB | fffffbffffffffff | ~8 PB | KASAN shadow > memory[1] > >... > >1. talk about the ranges here. Maybe: Addresses <ffeffc0000000000 are used by > KASAN "generic mode" only. Addresses >=ffeffc0000000000 can additionally > be used by the software tag-based mode. > >Or, list both ranges as separate: > > ffdf000000000000 | -8.25 PB | ffeffbffffffffff | ~8 PB | KASAN shadow > memory (generic mode only) > ffeffc0000000000 | -6 PB | fffffbffffffffff | 4 PB | KASAN shadow > memory (generic or > > software tag-based) >and describe the same use (generic mode) twice.
Thanks, I like the first option, I'll work on that. -- Kind regards Maciej Wieczór-Retman
