linux.git/drivers/xen, branch v2.6.39

PM: Add missing syscore_suspend() and syscore_resume() calls

2011-04-19T22:36:11+00:00

Device suspend/resume infrastructure is used not only by the suspend
and hibernate code in kernel/power, but also by APM, Xen and the
kexec jump feature.  However, commit 40dc166cb5dddbd36aa4ad11c03915ea
(PM / Core: Introduce struct syscore_ops for core subsystems PM)
failed to add syscore_suspend() and syscore_resume() calls to that
code, which generally leads to breakage when the features in question
are used.

To fix this problem, add the missing syscore_suspend() and
syscore_resume() calls to arch/x86/kernel/apm_32.c, kernel/kexec.c
and drivers/xen/manage.c.

Signed-off-by: Rafael J. Wysocki 
Acked-by: Greg Kroah-Hartman 
Acked-by: Ian Campbell

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6

2011-04-13T00:18:05+00:00

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  fix XEN_SAVE_RESTORE Kconfig dependencies
  PM / Hibernate: Introduce CONFIG_HIBERNATE_CALLBACKS

Merge branch 'stable/bug-fixes-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

2011-04-12T03:01:04+00:00

* 'stable/bug-fixes-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen: Allow PV-OPS kernel to detect whether XSAVE is supported
  xen: just completely disable XSAVE
  xen/debug: Don't be so verbose with WARN on 1-1 mapping errors.
  xen: events: fix error checks in bind_*_to_irqhandler()

PM / Hibernate: Introduce CONFIG_HIBERNATE_CALLBACKS

2011-04-11T20:54:42+00:00

Xen save/restore is going to use hibernate device callbacks for
quiescing devices and putting them back to normal operations and it
would need to select CONFIG_HIBERNATION for this purpose.  However,
that also would cause the hibernate interfaces for user space to be
enabled, which might confuse user space, because the Xen kernels
don't support hibernation.  Moreover, it would be wasteful, as it
would make the Xen kernels include a substantial amount of code that
they would never use.

To address this issue introduce new power management Kconfig option
CONFIG_HIBERNATE_CALLBACKS, such that it will only select the code
that is necessary for the hibernate device callbacks to work and make
CONFIG_HIBERNATION select it.  Then, Xen save/restore will be able to
select CONFIG_HIBERNATE_CALLBACKS without dragging the entire
hibernate code along with it.

Signed-off-by: Rafael J. Wysocki 
Tested-by: Shriram Rajagopalan

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi

xen: events: fix error checks in bind_*_to_irqhandler()

2011-03-30T19:37:04+00:00

Checking 'irq < 0' doesn't work when 'irq' is unsigned.

The assigned bind_evtchn_to_irq() and bind_virq_to_irq()
return int, so using int appears appropriate.

Signed-off-by: Nicolas Kaiser 
Signed-off-by: Konrad Rzeszutek Wilk

xen: Use new irq_move functions

2011-03-29T14:01:05+00:00

These functions take irq_data as an argument and avoid a redundant
lookup in the sparse irq case.

Signed-off-by: Thomas Gleixner 
Cc: Ian Campbell 
Cc: Jeremy Fitzhardinge 
Cc: Konrad Rzeszutek Wilk 
Signed-off-by: Konrad Rzeszutek Wilk

xen: Convert genirq namespace

2011-03-29T14:01:04+00:00

Converted with coccinelle.

Signed-off-by: Thomas Gleixner 
Acked-by: Ian Campbell 
Signed-off-by: Konrad Rzeszutek Wilk

xen-gntdev: unlock on error path in gntdev_mmap()

2011-03-24T14:32:45+00:00

We should unlock here and also decrement the number of &map->users.

Signed-off-by: Dan Carpenter 
Signed-off-by: Konrad Rzeszutek Wilk

xen-gntdev: return -EFAULT on copy_to_user failure

2011-03-24T14:32:44+00:00

copy_to_user() returns the amount of data remaining to be copied.  We
want to return a negative error code here.  The upper layers just
call WARN_ON() if we return non-zero so this doesn't change the
behavior.  But returning -EFAULT is still cleaner.

Signed-off-by: Dan Carpenter 
Signed-off-by: Konrad Rzeszutek Wilk