Commit 08d90f46 authored by Alexander Gordeev's avatar Alexander Gordeev Committed by Heiko Carstens
Browse files

s390/mm: fix MAX_DMA_ADDRESS physical vs virtual confusion 



MAX_DMA_ADDRESS is defined and treated as a physical address,
whereas it should be virtual.

Reviewed-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarAlexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent acf00b5e

arch/s390/include/asm/dma.h

+1 −1
Original line number Diff line number Diff line
@@ -9,6 +9,6 @@ 
 * to DMA. It _is_ used for the s390 memory zone split at 2GB caused

 * by the 31 bit heritage.

 */

#define MAX_DMA_ADDRESS         0x80000000

#define MAX_DMA_ADDRESS		__va(0x80000000)



#endif /* _ASM_S390_DMA_H */

arch/s390/mm/init.c

+1 −1
Original line number Diff line number Diff line
@@ -98,7 +98,7 @@ void __init paging_init(void) 
	sparse_init();

	zone_dma_bits = 31;

	memset(max_zone_pfns, 0, sizeof(max_zone_pfns));

	max_zone_pfns[ZONE_DMA] = PFN_DOWN(MAX_DMA_ADDRESS);

	max_zone_pfns[ZONE_DMA] = virt_to_pfn(MAX_DMA_ADDRESS);

	max_zone_pfns[ZONE_NORMAL] = max_low_pfn;

	free_area_init(max_zone_pfns);

}