]> git.baikalelectronics.ru Git - kernel.git/commit
projects / kernel.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 5d8803e) | patch
sparc64: Use kernel page tables for vmemmap.
authorDavid S. Miller <davem@davemloft.net>
Thu, 25 Sep 2014 04:20:14 +0000 (21:20 -0700)
committerDavid S. Miller <davem@davemloft.net>
Sun, 5 Oct 2014 23:53:39 +0000 (16:53 -0700)
commit564182ff25854f2d3eff6ea85d3eacb3716aa6e9
treece4deb5dadaea70c75d3f6680495055f16efb9c3tree | snapshot
parent5d8803e338d46b373a342e1fbc0f4a7893f5a362commit | diff
sparc64: Use kernel page tables for vmemmap.

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>
arch/sparc/kernel/ktlb.S diff | blob | history
arch/sparc/mm/init_64.c diff | blob | history
arch/sparc/mm/init_64.h diff | blob | history
Linux Kernel Source Tree.