Jeremy Fitzhardinge 06fc732c33 xen: disable interrupts before saving in percpu ...

Impact: Fix race condition

xen_mc_batch has a small preempt race where it takes the address of a
percpu variable immediately before disabling interrupts, thereby
leaving a small window in which we may migrate to another cpu and save
the flags in the wrong percpu variable.  Disable interrupts before
saving the old flags in a percpu.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

2009-02-03 17:22:40 -08:00

..

debugfs.c

xen: add debugfs support

2008-08-21 13:52:58 +02:00

debugfs.h

xen: add debugfs support

2008-08-21 13:52:58 +02:00

enlighten.c

xen: clean up asm/xen/hypervisor.h

2008-12-16 21:50:31 +01:00

grant-table.c

xen: make grant table arch portable

2008-04-24 23:57:32 +02:00

irq.c

xen: Fix bug `do_IRQ: cannot handle IRQ -1 vector 0x6 cpu 1'

2008-10-16 16:52:58 +02:00

Kconfig

xen: make CONFIG_XEN_SAVE_RESTORE depend on CONFIG_XEN

2008-09-30 09:58:05 +02:00

Makefile

ftrace: rename FTRACE to FUNCTION_TRACER

2008-10-20 18:27:03 +02:00

mmu.c

Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-01-02 11:44:09 -08:00

mmu.h

xen: use spin_lock_nest_lock when pinning a pagetable

2008-10-09 14:25:19 +02:00

multicalls.c

xen: whitespace/checkpatch cleanup

2008-12-16 21:05:01 +01:00

multicalls.h

xen: disable interrupts before saving in percpu

2009-02-03 17:22:40 -08:00

setup.c

xen: whitespace/checkpatch cleanup

2008-12-16 21:05:01 +01:00

smp.c

x86: cosmetic changes apic-related files.

2008-12-16 17:40:57 -08:00

spinlock.c

genirq: revert dynarray

2008-10-16 16:53:15 +02:00

suspend.c

xen: convert to cpumask_var_t and new cpumask primitives.

2008-12-16 17:40:57 -08:00

time.c

Merge branch 'cputime' of git://git390.osdl.marist.edu/pub/scm/linux-2.6

2009-01-03 11:56:24 -08:00

vdso.h

…

xen-asm_32.S

xen: compile irq functions without -pg for ftrace

2008-07-31 12:39:39 +02:00

xen-asm_64.S

xen: clean up x86-64 warnings

2008-10-03 10:04:10 +02:00

xen-head.S

xen64: add xen-head code to head_64.S

2008-07-16 10:58:41 +02:00

xen-ops.h

xen: convert to cpumask_var_t and new cpumask primitives.

2008-12-16 17:40:57 -08:00