Mel Gorman af3e4aca47 powerpc: Do not assert pte_locked for hugepage PTE entries ... With CONFIG_DEBUG_VM, an assertion is made when changing the protection flags of a PTE that the PTE is locked. Huge pages use a different pagetable format and the assertion is bogus and will always trigger with a bug looking something like Unable to handle kernel paging request for data at address 0xf1a00235800006f8 Faulting instruction address: 0xc000000000034a80 Oops: Kernel access of bad area, sig: 11 [#1] SMP NR_CPUS=32 NUMA Maple Modules linked in: dm_snapshot dm_mirror dm_region_hash dm_log dm_mod loop evdev ext3 jbd mbcache sg sd_mod ide_pci_generic pata_amd ata_generic ipr libata tg3 libphy scsi_mod windfarm_pid windfarm_smu_sat windfarm_max6690_sensor windfarm_lm75_sensor windfarm_cpufreq_clamp windfarm_core i2c_powermac NIP: c000000000034a80 LR: c000000000034b18 CTR: 0000000000000003 REGS: c000000003037600 TRAP: 0300 Not tainted (2.6.30-rc3-autokern1) MSR: 9000000000009032 <EE,ME,IR,DR> CR: 28002484 XER: 200fffff DAR: f1a00235800006f8, DSISR: 0000000040010000 TASK = c0000002e54cc740[2960] 'map_high_trunca' THREAD: c000000003034000 CPU: 2 GPR00: 4000000000000000 c000000003037880 c000000000895d30 c0000002e5a2e500 GPR04: 00000000a0000000 c0000002edc40880 0000005700000393 0000000000000001 GPR08: f000000011ac0000 01a00235800006e8 00000000000000f5 f1a00235800006e8 GPR12: 0000000028000484 c0000000008dd780 0000000000001000 0000000000000000 GPR16: fffffffffffff000 0000000000000000 00000000a0000000 c000000003037a20 GPR20: c0000002e5f4ece8 0000000000001000 c0000002edc40880 0000000000000000 GPR24: c0000002e5f4ece8 0000000000000000 00000000a0000000 c0000002e5f4ece8 GPR28: 0000005700000393 c0000002e5a2e500 00000000a0000000 c000000003037880 NIP [c000000000034a80] .assert_pte_locked+0xa4/0xd0 LR [c000000000034b18] .ptep_set_access_flags+0x6c/0xb4 Call Trace: [c000000003037880] [c000000003037990] 0xc000000003037990 (unreliable) [c000000003037910] [c000000000034b18] .ptep_set_access_flags+0x6c/0xb4 [c0000000030379b0] [c00000000014bef8] .hugetlb_cow+0x124/0x674 [c000000003037b00] [c00000000014c930] .hugetlb_fault+0x4e8/0x6f8 [c000000003037c00] [c00000000013443c] .handle_mm_fault+0xac/0x828 [c000000003037cf0] [c0000000000340a8] .do_page_fault+0x39c/0x584 [c000000003037e30] [c0000000000057b0] handle_page_fault+0x20/0x5c Instruction dump: 7d29582a 7d200074 7800d182 0b000000 3c004000 3960ffff 780007c6 796b00c4 7d290214 7929a302 1d290068 7d6b4a14 <800b0010> 7c000074 7800d182 0b000000 This patch fixes the problem by not asseting the PTE is locked for VMAs backed by huge pages. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>		2009-05-18 15:19:04 +10:00
..
alpha	alpha: unbreak percpu again	2009-05-12 14:11:35 -07:00
arm	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6	2009-05-15 08:06:56 -07:00
avr32	avr32: drop unused CLEAN_FILES	2009-05-01 10:54:00 +02:00
blackfin	clocksource: pass clocksource to read() callback	2009-04-21 13:41:47 -07:00
cris	CRISv32: Fix typo compile error in ARTPEC-3 gpio driver.	2009-04-28 19:08:10 +02:00
frv	FRV: Use __INIT macro instead of .text.init.	2009-04-27 19:46:30 -07:00
h8300	Get rid of final remnants of include/asm-$(ARCH)	2009-04-17 09:59:27 -07:00
ia64	[IA64] xen_domu_defconfig: fix build issues/warnings	2009-05-05 11:43:13 -07:00
m32r	m32r: use __stringify() macro in assembler.h	2009-05-02 22:38:21 +09:00
m68k	m68k: arch/m68k/kernel/sun3-head.S needs <linux/init.h>	2009-04-28 16:07:18 -07:00
m68knommu	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu	2009-04-24 08:45:53 -07:00
microblaze	Merge branch 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze	2009-05-08 16:24:25 -07:00
mips	MIPS: Sibyte: Fix locking in set_irq_affinity	2009-05-14 13:50:30 +01:00
mn10300	mn10300: convert to use __HEAD and HEAD_TEXT macros.	2009-04-26 09:20:38 -07:00
parisc
powerpc	powerpc: Do not assert pte_locked for hugepage PTE entries	2009-05-18 15:19:04 +10:00
s390	s390: convert to use __HEAD and HEAD_TEXT macros.	2009-04-26 09:20:39 -07:00
sh	sh: Use __INIT macro instead of .text.init.	2009-04-27 19:51:58 -07:00
sparc	sparc: cleanup references to deprecated .text.init* sections.	2009-04-27 19:51:58 -07:00
um	uml: kill a kconfig warning	2009-04-21 13:41:50 -07:00
x86	kgdb,i386: use address that SP register points to in the exception frame	2009-05-15 07:56:25 -05:00
xtensa	xtensa: Fix linker script to include .literal sections	2009-05-11 23:40:33 -07:00
.gitignore
Kconfig