Re: [PATCH v5 3/7] powerpc/mm/hugetlb: Handle hugepage size supported by hash config
From: Aneesh Kumar K.V <hidden>
Date: 2016-11-23 14:30:30
Balbir Singh [off-list ref] writes:
On 23/11/16 22:09, Aneesh Kumar K.V wrote:quoted
W.r.t hash page table config, we support 16MB and 16GB as the hugepage size. Update the hstate_get_psize to handle 16M and 16G. Signed-off-by: Aneesh Kumar K.V <redacted> --- arch/powerpc/include/asm/book3s/64/hugetlb.h | 4 ++++ 1 file changed, 4 insertions(+)diff --git a/arch/powerpc/include/asm/book3s/64/hugetlb.h b/arch/powerpc/include/asm/book3s/64/hugetlb.h index 499268045306..d9c283f95e05 100644 --- a/arch/powerpc/include/asm/book3s/64/hugetlb.h +++ b/arch/powerpc/include/asm/book3s/64/hugetlb.h@@ -21,6 +21,10 @@ static inline int hstate_get_psize(struct hstate *hstate) return MMU_PAGE_2M; else if (shift == mmu_psize_defs[MMU_PAGE_1G].shift) return MMU_PAGE_1G; + else if (shift == mmu_psize_defs[MMU_PAGE_16M].shift) + return MMU_PAGE_16M; + else if (shift == mmu_psize_defs[MMU_PAGE_16G].shift) + return MMU_PAGE_16G; else { WARN(1, "Wrong huge page shift\n"); return mmu_virtual_psize;Is this related to this patch series? Radix can't do these sizes
The code returns the psize (the index value of the page size ) from hstate. It doesn't make any verification. I added the hash details here because this header is now suppose to contain generic functions not radix specific one. -aneesh