Re: [PATCH v3 3/10] x86/asm: Fix pud/pmd interfaces to handle large PAT bit

From: Toshi Kani
Date: Tue Aug 25 2015 - 10:18:00 EST

On Tue, 2015-08-25 at 10:16 +0200, Thomas Gleixner wrote:
> On Wed, 5 Aug 2015, Toshi Kani wrote:
> > The PAT bit gets relocated to bit 12 when PUD and PMD mappings are
> > used. This bit 12, however, is not covered by PTE_FLAGS_MASK, which
> > is corrently used for masking pfn and flags for all cases.
> >
> > Fix pud/pmd interfaces to handle pfn and flags properly by using
> > P?D_PAGE_MASK when PUD/PMD mappings are used, i.e. PSE bit is set.
> Can you please split that into a patch introducing and describing the
> new mask helper functions and a second one making use of it?

Will do. I will send out v4 patchset today with this update (and the patch
01 update).

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at