linux/arch/ia64/mm
Jack Steiner 34d8a380d7 GRU Driver: hardware data structures
This series of patches adds a driver for the SGI UV GRU.  The driver is
still in development but it currently compiles for both x86_64 & IA64.
All simple regression tests pass on IA64.  Although features remain to be
added, I'd like to start the process of getting the driver into the
kernel.  Additional kernel drivers will depend on services provide by the
GRU driver.

The GRU is a hardware resource located in the system chipset.  The GRU
contains memory that is mmaped into the user address space.  This memory
is used to communicate with the GRU to perform functions such as
load/store, scatter/gather, bcopy, AMOs, etc.  The GRU is directly
accessed by user instructions using user virtual addresses.  GRU
instructions (ex., bcopy) use user virtual addresses for operands.

The GRU contains a large TLB that is functionally very similar to
processor TLBs.  Because the external contains a TLB with user virtual
address, it requires callouts from the core VM system when certain types
of changes are made to the process page tables.  There are several MMUOPS
patches currently being discussed but none has been accepted into the
kernel.  The GRU driver is built using version V18 from Andrea Arcangeli.

This patch:

Contains the definitions of the hardware GRU data structures that are used
by the driver to manage the GRU.

[akpm@linux-foundation;org: export hpage_shift]
Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30 09:41:47 -07:00
..
contig.c [IA64] Fix NUMA configuration issue 2008-04-11 15:21:35 -07:00
discontig.c bootmem: replace node_boot_start in struct bootmem_data 2008-07-24 10:47:20 -07:00
extable.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
fault.c [IA64] kprobes arch consolidation build fix 2008-03-06 09:49:01 -08:00
hugetlbpage.c GRU Driver: hardware data structures 2008-07-30 09:41:47 -07:00
init.c [IA64] fix personality(PER_LINUX32) performance issue 2008-05-15 09:54:19 -07:00
ioremap.c [IA64] make ioremap avoid unsupported attributes 2007-03-30 09:37:41 -07:00
Makefile [PATCH] ia64: ioremap: check EFI for valid memory attributes 2006-03-26 08:56:54 -08:00
numa.c [IA64] Minimize per_cpu reservations. 2008-04-08 13:51:35 -07:00
tlb.c [IA64] bugfix: nptcg breaks cpu-hotadd 2008-04-29 13:47:45 -07:00