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SubjectRe: [PATCH v6 1/2] arm64: Define Documentation/arm64/tagged-address-abi.rst
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On 7/25/19 6:50 AM, Vincenzo Frascino wrote:
> With the relaxed ABI proposed through this document, it is now possible
> to pass tagged pointers to the syscalls, when these pointers are in
> memory ranges obtained by an anonymous (MAP_ANONYMOUS) mmap().

I don't see a lot of description of why this restriction is necessary.
What's the problem with supporting MAP_SHARED?

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