Messages in this thread | | | Subject | Re: Candidate Linux ABI for Intel AMX and hypothetical new related features | From | Dave Hansen <> | Date | Fri, 21 May 2021 16:06:04 -0700 |
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On 5/21/21 3:07 PM, Len Brown wrote: > My concern about synchronous allocation is that it will be very easy > to abuse. programs and threads can ask for buffers they will never > use. With on-demand allocation, we allocate buffers only if they are > actually needed.
If someone wants to abuse the on-demand allocation, they will simply write a single bit to an AMX register. That does *NOT* mean they will actually execute an instruction that actually uses AMX to do something meaningful.
In the face of abuse, I think the two approaches are very similar.
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