Christoph Lameter d8117ce5a6 [IA64] Fix race in the accessed/dirty bit handlers ... A pte may be zapped by the swapper, exiting process, unmapping or page migration while the accessed or dirty bit handers are about to run. In that case the accessed bit or dirty is set on an zeroed pte which leads the VM to conclude that this is a swap pte. This may lead to - Messages from the vm like swap_free: Bad swap file entry 4000000000000000 - Processes being aborted swap_dup: Bad swap file entry 4000000000000000 VM: killing process .... Page migration is particular suitable for the creation of this race since it needs to remove and restore page table entries. The fix here is to check for the present bit and simply not update the pte if the page is not present anymore. If the page is not present then the fault handler should run next which will take care of the problem by bringing the page back and then mark the page dirty or move it onto the active list. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>		2006-03-08 16:07:55 -08:00
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cpufreq	[ACPI] IA64 ZX1 buildfix for _PDC patch	2005-12-05 17:24:45 -05:00
acpi-ext.c	[ACPI] ACPICA 20050930	2005-12-10 00:20:25 -05:00
acpi-processor.c	[ACPI] IA64 ZX1 buildfix for _PDC patch	2005-12-05 17:24:45 -05:00
acpi.c	[IA64] Count disabled cpus as potential hot-pluggable CPUs	2006-02-16 14:10:50 -08:00
asm-offsets.c	[IA64] fix circular dependency on generation of asm-offsets.h	2005-09-13 08:50:39 -07:00
brl_emu.c	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
cyclone.c	[IA64] don't report !sn2 or !summit hardware as an error	2006-03-07 15:26:49 -08:00
efi_stub.S	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
efi.c	[IA64] Fix wrong use of memparse in efi.c	2006-02-07 14:13:09 -08:00
entry.h	[IA64] Drop spurious paren in entry.h	2005-06-20 09:34:02 -07:00
entry.S	[IA64] Missing check for TIF_WORK if trace/audit enabled	2006-02-16 10:20:08 -08:00
fsys.S	[IA64] cleanup in fsys.S	2006-02-28 08:53:32 -08:00
gate-data.S	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
gate.lds.S	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
gate.S	kbuild: ia64 use generic asm-offsets.h support	2005-09-09 22:03:13 +02:00
head.S	[IA64] Fix CONFIG_PRINTK_TIME	2006-02-07 15:25:57 -08:00
ia64_ksyms.c	[IA64] Remove duplicate EXPORT_SYMBOLs	2006-02-15 13:23:32 -08:00
init_task.c	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
iosapic.c	[IA64] Manual merge fix for 3 files	2005-09-08 14:27:13 -07:00
irq_ia64.c	[IA64] assign_irq_vector() should not panic	2005-07-11 10:30:07 -07:00
irq_lsapic.c	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
irq.c	[IA64] wider use of for_each_cpu_mask() in arch/ia64	2005-10-25 15:10:08 -07:00
ivt.S	[IA64] Fix race in the accessed/dirty bit handlers	2006-03-08 16:07:55 -08:00
jprobes.S	[IA64] prevent accidental modification of args in jprobe handler	2006-01-13 14:45:21 -08:00
kprobes.c	[IA64] prevent accidental modification of args in jprobe handler	2006-01-13 14:45:21 -08:00
machvec.c	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
Makefile	[ACPI] IA64 ZX1 buildfix for _PDC patch	2005-12-05 17:24:45 -05:00
mca_asm.S	[IA64] Set the correct default OS status in the MCA handler	2006-01-24 11:50:07 -08:00
mca_drv_asm.S	[IA64] mca_drv cleanup	2005-09-16 10:39:40 -07:00
mca_drv.c	[IA64] mca recovery return value when no bus check	2006-03-07 15:40:06 -08:00
mca_drv.h	[IA64] mca_drv cleanup	2005-09-16 10:39:40 -07:00
mca.c	[PATCH] ia64: task_thread_info()	2006-01-12 09:08:58 -08:00
minstate.h	[IA64] MCA/INIT: remove the physical mode path from minstate.h	2005-09-11 14:09:12 -07:00
module.c	[IA64] wider use of for_each_cpu_mask() in arch/ia64	2005-10-25 15:10:08 -07:00
numa.c	[IA64] fix generic/up builds	2005-07-06 18:18:10 -07:00
pal.S	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
palinfo.c	[IA64] Allow /proc/pal/cpu0/vm_info under the simulator	2005-08-31 08:34:51 -07:00
patch.c	[IA64] Fix 2.6 kernel for the new ia64 assembler	2005-10-25 15:05:45 -07:00
perfmon_default_smpl.c	[IA64] perfmon: make pfm_sysctl a global, and other cleanup	2005-04-25 13:08:30 -07:00
perfmon_generic.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
perfmon_itanium.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
perfmon_mckinley.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
perfmon_montecito.h	[IA64] Perfmon for Montecito	2006-01-16 10:31:44 -08:00
perfmon.c	[IA64] sem2mutex: arch/ia64/kernel/perfmon.c	2006-01-19 11:17:56 -08:00
process.c	[PATCH] ia64: task_pt_regs()	2006-01-12 09:08:58 -08:00
ptrace.c	[PATCH] ia64: task_pt_regs()	2006-01-12 09:08:58 -08:00
sal.c	[IA64] avoid broken SAL_CACHE_FLUSH implementations	2006-02-02 13:25:54 -08:00
salinfo.c	[IA64] Add hotplug cpu to salinfo.c, replace semaphore with mutex	2006-01-13 14:22:35 -08:00
semaphore.c	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
setup.c	[IA64] Count disabled cpus as potential hot-pluggable CPUs	2006-02-14 15:37:58 -08:00
sigframe.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
signal.c	[PATCH] ia64: task_thread_info()	2006-01-12 09:08:58 -08:00
smp.c	[IA64] wider use of for_each_cpu_mask() in arch/ia64	2005-10-25 15:10:08 -07:00
smpboot.c	[IA64] Dont set NR_CPUS for cpu_possible_map when CPU hotplug is enabled.	2006-02-14 15:35:10 -08:00
sys_ia64.c	[PATCH] ia64: task_pt_regs()	2006-01-12 09:08:58 -08:00
time.c	[IA64] ia64: simplify and fix udelay()	2006-02-15 13:37:04 -08:00
topology.c	[PATCH] Export cpu topology in sysfs	2006-02-03 08:32:09 -08:00
traps.c	[IA64] support panic_on_oops sysctl	2006-02-15 15:16:50 -08:00
unaligned.c	[IA64] sysctl option to silence unaligned trap warnings	2006-02-28 09:42:23 -08:00
uncached.c	[IA64] eliminate softlockup warning	2006-01-19 11:18:25 -08:00
unwind_decoder.c	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
unwind_i.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
unwind.c	[IA64] MCA/INIT: remove obsolete unwind code	2005-09-11 14:09:34 -07:00
vmlinux.lds.S	[IA64] Add __read_mostly support for IA64	2005-12-16 10:52:46 -08:00