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Commit 6c9620c6 authored by Jack Steiner's avatar Jack Steiner Committed by Linus Torvalds
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gru: support 64-bit GRU addresses 



Increase the maximum address supported by the SGI GRU driver to a full 64
bits.  Note that GRU addresses are not always the same as socket virtual
addresses.  Sockets may not necessarily support the full 64 bits.

Signed-off-by: default avatarJack Steiner <steiner@sgi.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 648eb8e5

drivers/misc/sgi-gru/grutables.h

+0 −6
Original line number Diff line number Diff line
@@ -293,13 +293,7 @@ extern struct mcs_op_statistic mcs_op_statistics[mcsop_last]; 
#define ASID_INC	8	/* number of regions */



/* Generate a GRU asid value from a GRU base asid & a virtual address. */

#if defined CONFIG_IA64

#define VADDR_HI_BIT		64

#elif defined CONFIG_X86_64

#define VADDR_HI_BIT		48

#else

#error "Unsupported architecture"

#endif

#define GRUREGION(addr)		((addr) >> (VADDR_HI_BIT - 3) & 3)

#define GRUASID(asid, addr)	((asid) + GRUREGION(addr))