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[GIT,PULL,26/51] s390: introduce page_to_virt() and pfn_to_virt()

Message ID 1466514809-146638-27-git-send-email-borntraeger@de.ibm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Christian Borntraeger June 21, 2016, 1:13 p.m. UTC 
From: David Hildenbrand <dahi@linux.vnet.ibm.com>

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>
---
 arch/s390/include/asm/page.h | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index f874e7d5..b5edff3 100644
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -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)