| Subject | Re: [PATCH v19 00/15] arm64: untag user pointers passed to the kernel | From | Kevin Brodsky <> | Date | Thu, 1 Aug 2019 13:11:40 +0100 |
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On 31/07/2019 17:50, Dave Hansen wrote: > On 7/23/19 10:58 AM, Andrey Konovalov wrote: >> The mmap and mremap (only new_addr) syscalls do not currently accept >> tagged addresses. Architectures may interpret the tag as a background >> colour for the corresponding vma. > What the heck is a "background colour"? :)
Good point, this is some jargon that we started using for MTE, the idea being that the kernel could set a tag value (specified during mmap()) as "background colour" for anonymous pages allocated in that range.
Anyway, this patch series is not about MTE. Andrey, for v20 (if any), I think it's best to drop this last sentence to avoid any confusion.
Kevin
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