| Date | Sun, 4 Jul 2021 22:04:49 +0100 | From | Matthew Wilcox <> | Subject | Re: [PATCH 01/17] kallsyms: support big kernel symbols (2-byte lengths) |
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On Sun, Jul 04, 2021 at 10:27:40PM +0200, ojeda@kernel.org wrote: > From: Miguel Ojeda <ojeda@kernel.org> > > Rust symbols can become quite long due to namespacing introduced > by modules, types, traits, generics, etc. > > Increasing to 255 is not enough in some cases, and therefore > we need to introduce 2-byte lengths to the symbol table. We call > these "big" symbols. > > In order to avoid increasing all lengths to 2 bytes (since most > of them only require 1 byte, including many Rust ones), we use > length zero to mark "big" symbols in the table.
What happened to my suggestion from last time of encoding symbols < 128 as 0-127 and symbols larger than that as (data[0] - 128) * 256 + data[1]) ?
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