The patch titled
x86: fix aperture vs. suspend problem
has been added to the -mm tree. Its filename is
x86-fix-aperture-vs-suspend-problem.patch
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Subject: x86: fix aperture vs. suspend problem
From: Pavel Machek <pavel@xxxxxx>
aperture_64.c takes a piece of memory and makes it into an iommu window. But
such window may not be saved by swsusp -- that leads to oops during suspend.
Signed-off-by: Pavel Machek <pavel@xxxxxxx>
Acked-by: "Rafael J. Wysocki" <rjw@xxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/aperture_64.c | 2 ++
1 file changed, 2 insertions(+)
diff -puN arch/x86/kernel/aperture_64.c~x86-fix-aperture-vs-suspend-problem arch/x86/kernel/aperture_64.c
--- a/arch/x86/kernel/aperture_64.c~x86-fix-aperture-vs-suspend-problem
+++ a/arch/x86/kernel/aperture_64.c
@@ -18,6 +18,7 @@
#include <linux/pci.h>
#include <linux/bitops.h>
#include <linux/ioport.h>
+#include <linux/suspend.h>
#include <asm/e820.h>
#include <asm/io.h>
#include <asm/gart.h>
@@ -76,6 +77,7 @@ static u32 __init allocate_aperture(void
printk(KERN_INFO "Mapping aperture over %d KB of RAM @ %lx\n",
aper_size >> 10, __pa(p));
insert_aperture_resource((u32)__pa(p), aper_size);
+ register_nosave_region((u32)__pa(p) >> PAGE_SHIFT, (u32)__pa(p+aper_size) >> PAGE_SHIFT);
return (u32)__pa(p);
}
_
Patches currently in -mm which might be from pavel@xxxxxx are
git-x86.patch
pm-handle-device-registrations-during-suspend-resume.patch
driver-core-call-device_pm_add-after-bus_add_device-in-device_add.patch
pm-make-wakeup-flags-available-whenever-config_pm-is-set.patch
git-hrt.patch
x86-fix-aperture-vs-suspend-problem.patch
pm-gxfb-add-hook-to-pm-console-layer-that-allows-disabling-of-suspend-vt-switch.patch
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