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SubjectRe: [RFC 1/2] vfio/pci: keep the prefetchable attribute of a BAR region in VMA
On Mon, May 03, 2021 at 10:03:59PM +0000, Vikram Sethi wrote:
> Will/Catalin, perhaps you could explain your thought process on why you chose
> Normal NC for ioremap_wc on the armv8 linux port instead of Device GRE or other
> Device Gxx.

I think a combination of: compatibility with 32-bit Arm, the need to
support unaligned accesses and the potential for higher performance.

Furthermore, ioremap() already gives you a Device memory type, and we're
tight on MAIR space.

Will

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