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| author | Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2021-02-03 10:28:10 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-02-11 23:35:06 +1100 |
| commit | c7ba2d636342093cfb842f47640e5b62192adfed (patch) | |
| tree | 8d384dd8b0050a4f5a4bc1c1df9361397836fe87 /arch/powerpc/mm/hugetlbpage.c | |
| parent | c9df3f809cc98b196548864f52d3c4e280dd1970 (diff) | |
| download | lwn-c7ba2d636342093cfb842f47640e5b62192adfed.tar.gz lwn-c7ba2d636342093cfb842f47640e5b62192adfed.zip | |
powerpc/mm: Enable compound page check for both THP and HugeTLB
THP config results in compound pages. Make sure the kernel enables
the PageCompound() check with CONFIG_HUGETLB_PAGE disabled and
CONFIG_TRANSPARENT_HUGEPAGE enabled.
This makes sure we correctly flush the icache with THP pages.
flush_dcache_icache_page only matter for platforms that don't support
COHERENT_ICACHE.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210203045812.234439-1-aneesh.kumar@linux.ibm.com
Diffstat (limited to 'arch/powerpc/mm/hugetlbpage.c')
| -rw-r--r-- | arch/powerpc/mm/hugetlbpage.c | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index 4e7d9b91f1da..d142b76d507d 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -663,24 +663,6 @@ static int __init hugetlbpage_init(void) arch_initcall(hugetlbpage_init); -void flush_dcache_icache_hugepage(struct page *page) -{ - int i; - void *start; - - BUG_ON(!PageCompound(page)); - - for (i = 0; i < compound_nr(page); i++) { - if (!PageHighMem(page)) { - __flush_dcache_icache(page_address(page+i)); - } else { - start = kmap_atomic(page+i); - __flush_dcache_icache(start); - kunmap_atomic(start); - } - } -} - void __init gigantic_hugetlb_cma_reserve(void) { unsigned long order = 0; |