Messages in this thread | | | Date | Tue, 12 Dec 2023 17:16:15 +0000 | From | Catalin Marinas <> | Subject | Re: [PATCH v9 1/4] arm64: mte: implement CONFIG_ARM64_MTE_COMP |
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On Mon, Nov 13, 2023 at 11:52:30AM +0100, Alexander Potapenko wrote: > The config implements the algorithm compressing memory tags for ARM MTE > during swapping. > > The algorithm is based on RLE and specifically targets buffers of tags > corresponding to a single page. In many cases a buffer can be compressed > into 63 bits, making it possible to store it without additional memory > allocation. > > Suggested-by: Evgenii Stepanov <eugenis@google.com> > Signed-off-by: Alexander Potapenko <glider@google.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
> +void mte_tags_to_ranges(u8 *tags, u8 *out_tags, unsigned short *out_sizes, > + size_t *out_len) > +{ [...] > +} > +EXPORT_SYMBOL_NS(mte_tags_to_ranges, MTECOMP);
I may have asked before, what the reason for EXPORT_SYMBOL_NS? Is it for the kunit tests? Otherwise we don't expect those to be accessed from modules.
-- Catalin
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