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378b1e7a80
linux/arch/s390
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Heiko Carstens 378b1e7a80 s390/mm: fix pmd_huge() usage for kernel mapping 
pmd_huge() will always return 0 on !HUGETLBFS, however we use that helper
function when walking the kernel page tables to decide if we have a
1MB page frame or not.
Since we create 1MB frames for the kernel 1:1 mapping independently of
HUGETLBFS this can lead to incorrect storage accesses since the code
can assume that we have a pointer to a page table instead of a pointer
to a 1MB frame.

Fix this by adding a pmd_large() primitive like other architectures have
it already and remove all references to HUGETLBFS/HUGETLBPAGE from the
code that walks kernel page tables.

Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2012-10-09 14:16:56 +02:00
..
appldata s390/vtimer: rework virtual timer interface 2012-07-20 11:15:08 +02:00
boot s390/ipl,decrompressor: disable branch profiling 2012-09-26 15:45:21 +02:00
crypto crypto: arch/s390 - cleanup - remove unneeded cra_list initialization 2012-08-01 17:47:29 +08:00
hypfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2012-10-02 20:25:04 -07:00
include s390/mm: fix pmd_huge() usage for kernel mapping 2012-10-09 14:16:56 +02:00
kernel s390/mm: use pfmf instruction to initialize storage keys 2012-10-09 14:16:55 +02:00
kvm KVM updates for the 3.7 merge window 2012-10-04 09:30:33 -07:00
lib s390/string: provide asm lib functions for memcpy and memcmp 2012-09-26 15:44:50 +02:00
math-emu s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
mm s390/mm: fix pmd_huge() usage for kernel mapping 2012-10-09 14:16:56 +02:00
net s390/bpf,jit: add support for BPF_S_ANC_ALU_XOR_X instruction 2012-09-26 15:45:28 +02:00
oprofile oprofile, s390: Fix uninitialized memory access when writing to oprofilefs 2012-08-27 14:49:23 +02:00
defconfig s390: update defconfig 2012-09-26 15:45:29 +02:00
Kbuild s390/bpf,jit: BPF Just In Time compiler for s390 2012-09-26 15:44:49 +02:00
Kconfig Kconfig: clean up the "#if defined(arch)" list for exception-trace sysctl entry 2012-10-09 16:22:14 +09:00
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