linux/arch/s390
Gerald Schaefer 4db84d4f07 s390/mm: fix user access page-table walk code
The s390 page-table walk code, used for user copy and futex, currently
cannot handle huge pages. As far as user copy is concerned, that is
not really a problem because those functions will only be used on old
hardware that has no huge page support. But the futex code will also
use pagetable walk functions on current hardware when user space runs
in primary space mode. So, if a futex sits in a huge page, the futex
operation on it will result in a page fault loop or even data
corruption.

This patch adds the code for resolving huge page mappings in the user
access pagetable walk code on s390.

Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2012-09-17 09:44:24 +02:00
..
appldata s390/vtimer: rework virtual timer interface 2012-07-20 11:15:08 +02:00
boot s390: add various .gitignore files. 2012-05-16 14:42:41 +02:00
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2012-07-26 13:00:59 -07:00
hypfs s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
include/asm s390/hugetlb: use direct TLB flushing for hugetlbfs pages 2012-09-06 10:40:37 +02:00
kernel s390/hwcaps: do not report high gprs for 31 bit kernel 2012-09-10 09:53:52 +02:00
kvm KVM updates for the 3.6 merge window 2012-07-24 12:01:20 -07:00
lib s390/mm: fix user access page-table walk code 2012-09-17 09:44:24 +02:00
math-emu s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
mm s390: make use of user_mode() macro where possible 2012-07-30 11:03:12 +02:00
oprofile s390: make use of user_mode() macro where possible 2012-07-30 11:03:12 +02:00
defconfig Merge branch 'akpm' (Andrew's patch-bomb) 2012-07-31 19:25:39 -07:00
Kbuild [S390] make arch/s390 subdirectories depend on config option 2011-12-27 11:27:12 +01:00
Kconfig s390/seccomp: add support for system call filtering using BPF 2012-08-08 07:32:56 -07:00
Kconfig.debug [S390] Write protect module text and RO data 2011-03-15 17:08:23 +01:00
Makefile s390: Use generic init_task 2012-05-05 13:00:25 +02:00