On Fri, May 21, 2021 at 7:06 PM Dave Hansen <dave.hansen@xxxxxxxxx> wrote: > > 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. I didn't mean "abuse" in terms of malicious resource hogging. I meant "abuse" in terms of unnecessarily using resources out of laziness.
