Messages in this thread | | | Date | Sat, 27 Mar 2021 10:58:52 +0100 | From | Greg KH <> | Subject | Re: Candidate Linux ABI for Intel AMX and hypothetical new related features |
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On Fri, Mar 26, 2021 at 11:39:18PM -0400, Len Brown wrote: > Hi Andy, > > Say a mainline links with a math library that uses AMX without the > knowledge of the mainline.
What does this mean? What happened to the context here?
> Say the mainline is also linked with a userspace threading library > that thinks it has a concept of XSAVE area size.
How can the kernel (what I think you mean by "mainline" here) be linked with a userspace library at all?
> Wouldn't the change in XCR0, resulting in XSAVE size change, risk > confusing the threading library?
Shouldn't that be the job of the kernel and not userspace?
totally confused,
greg k-h
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