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gru: support 64-bit GRU addresses

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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: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jack Steiner 2009-12-15 16:48:07 -08:00 committed by Linus Torvalds
parent 648eb8e502
commit 6c9620c64b
1 changed files with 0 additions and 6 deletions
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6
drivers/misc/sgi-gru/grutables.h
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@ -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))