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s390: introduce page_to_virt() and pfn_to_virt() 

Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
David Hildenbrand 2015-11-16 10:45:03 +01:00 committed by Christian Borntraeger
parent 37d9df98b7
commit 3d84683bd7
1 changed files with 2 additions and 0 deletions
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2
arch/s390/include/asm/page.h
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@ -147,6 +147,8 @@ static inline int devmem_is_allowed(unsigned long pfn)
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
#define page_to_virt(page) pfn_to_virt(page_to_pfn(page))
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)