On Wed, 2021-08-25 at 06:36 -0700, Dan Williams wrote:

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The problem here is that cpuid_eax() and cpuid_ebx() don't even exist on

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It can't compile because the arch dependencies are not stubbed out
like other arch specific helpers. I think this is something to revisit
if / when concepts similar to the "enqcmd" instruction appear on other
archs.

I think you're confusing ioat and idxd? :)

The ioat driver (which this patch is against) uses cpuid_eax() and
cpuid_ebx() above, and really if a driver uses that then it can only
possibly run on IA :)

I'm not sure it makes sense to abstract out things such as
dca_enabled_in_bios() to a general architecture thing either?

johannes