David Miller 9e695d2ecc sparc64: Support transparent huge pages. ... This is relatively easy since PMD's now cover exactly 4MB of memory. Our PMD entries are 32-bits each, so we use a special encoding. The lowest bit, PMD_ISHUGE, determines the interpretation. This is possible because sparc64's page tables are purely software entities so we can use whatever encoding scheme we want. We just have to make the TLB miss assembler page table walkers aware of the layout. set_pmd_at() works much like set_pte_at() but it has to operate in two page from a table of non-huge PTEs, so we have to queue up TLB flushes based upon what mappings are valid in the PTE table. In the second regime we are going from huge-page to non-huge-page, and in that case we need only queue up a single TLB flush to push out the huge page mapping. We still have 5 bits remaining in the huge PMD encoding so we can very likely support any new pieces of THP state tracking that might get added in the future. With lots of help from Johannes Weiner. Signed-off-by: David S. Miller <davem@davemloft.net> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2012-10-09 16:23:06 +09:00
..
alpha	mm: kill vma flag VM_RESERVED and mm->reserved_vm counter	2012-10-09 16:22:19 +09:00
arm	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
arm64	Kconfig: clean up the "#if defined(arch)" list for exception-trace sysctl entry	2012-10-09 16:22:14 +09:00
avr32	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
blackfin	Kconfig: clean up the long arch list for the UID16 config option	2012-10-09 16:22:13 +09:00
c6x	Merge branch 'uapi-prep' of git://git.infradead.org/users/dhowells/linux-headers	2012-10-07 07:55:10 +09:00
cris	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
frv	Kconfig: clean up the long arch list for the DEBUG_BUGVERBOSE config option	2012-10-09 16:22:14 +09:00
h8300	Kconfig: clean up the long arch list for the UID16 config option	2012-10-09 16:22:13 +09:00
hexagon	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
ia64	mm: fix-up zone present pages	2012-10-09 16:22:54 +09:00
m32r	Kconfig: clean up the long arch list for the DEBUG_BUGVERBOSE config option	2012-10-09 16:22:14 +09:00
m68k	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
microblaze	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
mips	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
mn10300	cross-arch: don't corrupt personality flags upon exec()	2012-10-06 03:04:47 +09:00
openrisc	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
parisc	mm: replace vma prio_tree with an interval tree	2012-10-09 16:22:39 +09:00
powerpc	memory-hotplug: suppress "Trying to free nonexistent resource <XXXXXXXXXXXXXXXX-YYYYYYYYYYYYYYYY>" warning	2012-10-09 16:23:04 +09:00
s390	mm: Add and use update_mmu_cache_pmd() in transparent huge page code.	2012-10-09 16:23:05 +09:00
score	Merge branch 'uapi-prep' of git://git.infradead.org/users/dhowells/linux-headers	2012-10-07 07:55:10 +09:00
sh	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
sparc	sparc64: Support transparent huge pages.	2012-10-09 16:23:06 +09:00
tile	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
um	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
unicore32	mm: kill vma flag VM_RESERVED and mm->reserved_vm counter	2012-10-09 16:22:19 +09:00
x86	mm: Add and use update_mmu_cache_pmd() in transparent huge page code.	2012-10-09 16:23:05 +09:00
xtensa	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
.gitignore
Kconfig	thp, x86: introduce HAVE_ARCH_TRANSPARENT_HUGEPAGE	2012-10-09 16:22:29 +09:00