linux/arch/powerpc
Aneesh Kumar K.V eda8eebdd1 powerpc/mm: Fix hash computation function
The ASM version of hash computation function was truncating the upper bit.
Make the ASM version similar to hpt_hash function. Remove masking vsid bits.
Without this patch, we observed hang during bootup due to not satisfying page
fault request correctly. The fault handler used wrong hash values to update
the HPTE. Hence we kept looping with page fault.

hash_page(ea=000001003e260008, access=203, trap=300 ip=3fff91787134 dsisr 42000000
The computed value of hash 000000000f22f390
update: avpnv=4003e46054003e00, hash=000000000722f390, f=80000006, psize: 2 ...

BenH: The over-masking has been there for ever but only hurts with the
new 64T support introduced in 3.7

Reported-by: Mike Qiu <qiudayu@linux.vnet.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Tested-by: Mike Qiu <qiudayu@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org> [v3.7]
2013-02-04 15:15:08 +11:00
..
boot
configs
include Merge git://git.kernel.org/pub/scm/virt/kvm/kvm 2013-01-10 09:05:18 -08:00
kernel powerpc: Max next_tb to prevent from replaying timer interrupt 2013-01-29 10:18:16 +11:00
kvm KVM: PPC: Emulate dcbf 2013-01-18 00:40:49 +01:00
lib
math-emu
mm powerpc/mm: Fix hash computation function 2013-02-04 15:15:08 +11:00
net
oprofile powerpc/oprofile: Fix error in oprofile power7_marked_instr_event() function 2013-01-29 10:18:14 +11:00
perf
platforms powerpc/pasemi: Fix crash on reboot 2013-01-29 10:18:14 +11:00
sysdev POWERPC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
xmon
Kconfig
Kconfig.debug
Makefile
relocs_check.pl