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David S. Miller 29070cdcc7 sparc64: Use kernel page tables for vmemmap. 
[ Upstream commit c06240c7f5 ]

For sparse memory configurations, the vmemmap array behaves terribly
and it takes up an inordinate amount of space in the BSS section of
the kernel image unconditionally.

Just build huge PMDs and look them up just like we do for TLB misses
in the vmalloc area.

Kernel BSS shrinks by about 2MB.

Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Bob Picco <bob.picco@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2014-10-30 09:38:27 -07:00
..
alpha alpha: fix broken network checksum 2014-01-31 09:21:55 -08:00
arc ARC: Implement ptrace(PTRACE_GET_THREAD_AREA) 2014-07-28 08:06:04 -07:00
arm ARM: mvebu: Netgear RN102: Use Hardware BCH ECC 2014-10-30 09:38:25 -07:00
arm64 arm64: compat: fix compat types affecting struct compat_elf_prpsinfo 2014-10-30 09:38:24 -07:00
avr32 avr32: add generic vga.h to Kbuild 2014-02-17 11:24:48 +01:00
blackfin Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2014-01-31 09:31:14 -08:00
c6x Build fix for c6x 2014-03-07 09:52:46 -08:00
cris cris: convert ffs from an object-like macro to a function-like macro 2014-03-10 17:26:21 -07:00
frv Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2014-01-30 16:58:05 -08:00
hexagon Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-01-25 11:17:34 -08:00
ia64 hugetlb: restrict hugepage_migration_support() to x86_64 2014-06-30 20:11:53 -07:00
m32r Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-01-25 11:17:34 -08:00
m68k m68k: Disable/restore interrupts in hwreg_present()/hwreg_write() 2014-10-30 09:38:21 -07:00
metag parisc,metag: Do not hardcode maximum userspace stack size 2014-07-17 16:21:03 -07:00
microblaze microblaze: Fix a typo when disabling stack protection 2014-02-10 07:44:11 +01:00
mips MIPS: mcount: Adjust stack pointer for static trace in MIPS32 2014-10-05 14:52:16 -07:00
mn10300 Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2014-01-30 16:58:05 -08:00
openrisc OpenRISC updates for 3.14 2014-01-30 17:08:41 -08:00
parisc parisc: Only use -mfast-indirect-calls option for 32-bit kernel builds 2014-10-05 14:52:21 -07:00
powerpc powerpc/iommu/ddw: Fix endianness 2014-10-30 09:38:24 -07:00
s390 KVM: s390: unintended fallthrough for external call 2014-10-30 09:38:19 -07:00
score Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2014-01-31 09:31:14 -08:00
sh hugetlb: restrict hugepage_migration_support() to x86_64 2014-06-30 20:11:53 -07:00
sparc sparc64: Use kernel page tables for vmemmap. 2014-10-30 09:38:27 -07:00
tile hugetlb: restrict hugepage_migration_support() to x86_64 2014-06-30 20:11:53 -07:00
um Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml 2014-01-26 11:06:16 -08:00
unicore32 mm: per-thread vma caching 2014-10-09 12:21:29 -07:00
x86 x86/intel/quark: Switch off CR4.PGE so TLB flush uses CR3 instead 2014-10-30 09:38:19 -07:00
xtensa xtensa: fix a6 and a7 handling in fast_syscall_xtensa 2014-10-05 14:52:13 -07:00
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