forked from Minki/linux
049d567af2
This patch adds a new software defined pte bit. We use the reserved fields of ISA 3.0 pte definition since we will only be using this on DD1 code paths. We can possibly look at removing this code later. The software bit will be used to differentiate between 64K/4K and 2M ptes. This helps in finding the page size mapping by a pte so that we can do efficient tlb flush. We don't support 1G hugetlb pages yet. So we add a DEBUG WARN_ON to catch wrong usage. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> |
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uapi/asm |