On Mon, Dec 09, 2019 at 12:13:40PM -0700, Logan Gunthorpe wrote:
> This changes is pretty routine for most of the arches: x86_64, s390, arm64
> and powerpc simply need to thread the pgprot through to where the page tables
> are setup. x86_32 unfortunately sets up the page tables at boot so
> must u
Hi,
Currently, the page tables created using memremap_pages() are always
created with the PAGE_KERNEL cacheing mode. However, the P2PDMA code
is creating pages for PCI BAR memory which should never be accessed
through the cache and instead use either WC or UC. This still works in
most cases, on x8
