From: "Aneesh Kumar K.V" <[email protected]> Date: Wed, 29 Oct 2014 13:49:44 +0530
> Update generic gup implementation with powerpc specific details. > On powerpc at pmd level we can have hugepte, normal pmd pointer > or a pointer to the hugepage directory. > > Signed-off-by: Aneesh Kumar K.V <[email protected]> > --- > Changes from V3: > * Drop arm and arm64 changes > * Add hugepte assumption to the function Wait, what are you doing here? You can't assume that a pmd is something you can just go: __pte(pmd_val(x)) with. Not at all. You have to use the correct pmd_*() accessors at all times on this object. Platforms can encode PMDs however they like. In fact, on sparc64, we used to have 32-bit PMDs with a special encoding for huge PMDs that looked nothing at all like a 64-bit PTE. Please code this in a portable manner to support the powerpc facilities, don't add assumptions that are not necessarily universally true. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
