tjh.dev / kernel
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[PARISC] Add some defines for HugeTLB pages

Define some constants for HugeTLB pages, not that parisc-linux supports
it yet.

Signed-off-by: Helge Deller <deller@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

authored by

Helge Deller and committed by
Kyle McMartin e8b736c8 4d64c9f5

+7
unified split
+7
include/asm-parisc/page.h
··· 135 #define pfn_valid(pfn) ((pfn) < max_mapnr) 136 #endif /* CONFIG_DISCONTIGMEM */ 137 138 #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) 139 140 #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
··· 135 #define pfn_valid(pfn) ((pfn) < max_mapnr) 136 #endif /* CONFIG_DISCONTIGMEM */ 137 138 + #ifdef CONFIG_HUGETLB_PAGE 139 + #define HPAGE_SHIFT 22 /* 4MB (is this fixed?) */ 140 + #define HPAGE_SIZE ((1UL) << HPAGE_SHIFT) 141 + #define HPAGE_MASK (~(HPAGE_SIZE - 1)) 142 + #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) 143 + #endif 144 + 145 #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) 146 147 #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)