Chris Wright 1c9fc3d11b intel-iommu: Dont cache iova above 32bit ... Mike Travis and Mike Habeck reported an issue where iova allocation would return a range that was larger than a device's dma mask. https://lkml.org/lkml/2011/3/29/423 The dmar initialization code will reserve all PCI MMIO regions and copy those reservations into a domain specific iova tree. It is possible for one of those regions to be above the dma mask of a device. It is typical to allocate iovas with a 32bit mask (despite device's dma mask possibly being larger) and cache the result until it exhausts the lower 32bit address space. Freeing the iova range that is >= the last iova in the lower 32bit range when there is still an iova above the 32bit range will corrupt the cached iova by pointing it to a region that is above 32bit. If that region is also larger than the device's dma mask, a subsequent allocation will return an unusable iova and cause dma failure. Simply don't cache an iova that is above the 32bit caching boundary. Reported-by: Mike Travis <travis@sgi.com> Reported-by: Mike Habeck <habeck@sgi.com> Cc: stable@kernel.org Acked-by: Mike Travis <travis@sgi.com> Tested-by: Mike Habeck <habeck@sgi.com> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>		2011-06-01 12:47:40 +01:00
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acpi	ACPI / PM: Avoid infinite recurrence while registering power resources	2011-04-26 11:33:18 +02:00
amba	PM / Hibernate: Introduce CONFIG_HIBERNATE_CALLBACKS	2011-04-11 22:54:42 +02:00
ata	Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev	2011-05-14 12:19:18 -07:00
atm	drivercore: revert addition of of_match to struct device	2011-05-18 12:32:23 -06:00
auxdisplay	Fix common misspellings	2011-03-31 11:26:23 -03:00
base	PM / Wakeup: Fix initialization of wakeup-related device sysfs files	2011-04-26 11:33:09 +02:00
block	Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block	2011-05-18 06:49:02 -07:00
bluetooth	Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6	2011-04-07 11:14:49 -07:00
cdrom	cdrom: always check_disk_change() on open	2011-04-29 10:17:25 +02:00
char	drivercore: revert addition of of_match to struct device	2011-05-18 12:32:23 -06:00
clk	CLKDEV: Fix clkdev return value for NULL clk case	2011-04-30 10:14:08 +01:00
clocksource
connector	connector: fix skb double free in cn_rx_skb()	2011-04-12 14:38:57 -07:00
cpufreq	Fix common misspellings	2011-03-31 11:26:23 -03:00
cpuidle
crypto	Fix common misspellings	2011-03-31 11:26:23 -03:00
dca	drivers/dca/dca-core.c: use list_move() instead of list_del()/list_add() combination	2011-03-22 17:44:12 -07:00
dio
dma	Merge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6	2011-04-11 15:44:38 -07:00
edac	drivercore: revert addition of of_match to struct device	2011-05-18 12:32:23 -06:00
eisa
firewire	Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6	2011-05-04 14:21:39 -07:00
firmware	sigma-firmware: loader for Analog Devices' SigmaStudio	2011-03-22 17:44:15 -07:00
gpio	Merge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6	2011-04-11 15:44:38 -07:00
gpu	drm: Take lock around probes for drm_fb_helper_hotplug_event	2011-05-16 12:01:43 +10:00
hid	Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6	2011-04-07 11:14:49 -07:00
hwmon	hwmon: (twl4030-madc-hwmon) Return proper error if hwmon_device_register fails	2011-05-01 09:06:35 -07:00
hwspinlock
i2c	drivercore: revert addition of of_match to struct device	2011-05-18 12:32:23 -06:00
ide	ide: unexport DISK_EVENT_MEDIA_CHANGE for ide-gd and ide-cd	2011-04-21 19:43:59 +02:00
idle
ieee802154
infiniband	Revert wrong fixes for common misspellings	2011-04-26 23:31:11 -07:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2011-05-12 10:41:31 -07:00
isdn	Fix common misspellings	2011-03-31 11:26:23 -03:00
leds	drivers/leds/leds-lm3530.c: add MODULE_DEVICE_TABLE	2011-05-18 02:55:22 -07:00
lguest	Fix common misspellings	2011-03-31 11:26:23 -03:00
macintosh	Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6	2011-04-07 11:14:49 -07:00
mca
md	raid5: fix build error, sector_t usage	2011-04-21 10:00:00 -07:00
media	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6	2011-05-18 03:16:38 -07:00
memstick	Fix common misspellings	2011-03-31 11:26:23 -03:00
message	block: unexport DISK_EVENT_MEDIA_CHANGE for legacy/fringe drivers	2011-04-21 21:33:05 +02:00
mfd	mfd: Fix for the TWL4030 PM sleep/wakeup sequence	2011-05-11 11:09:58 +02:00
misc	drivers/misc/sgi-gru/grufile.c: fix the wrong members of gru_chip	2011-04-14 16:06:55 -07:00
mmc	drivercore: revert addition of of_match to struct device	2011-05-18 12:32:23 -06:00
mtd	drivercore: revert addition of of_match to struct device	2011-05-18 12:32:23 -06:00
net	drivercore: revert addition of of_match to struct device	2011-05-18 12:32:23 -06:00
nfc
nubus
of	Fix common misspellings	2011-03-31 11:26:23 -03:00
oprofile
parisc	Fix common misspellings	2011-03-31 11:26:23 -03:00
parport	parport_pc.c: correctly release the requested region for the IT887x	2011-04-19 16:36:24 -07:00
pci	intel-iommu: Dont cache iova above 32bit	2011-06-01 12:47:40 +01:00
pcmcia	Revert wrong fixes for common misspellings	2011-04-26 23:31:11 -07:00
platform	eeepc-laptop: Use ACPI handle to identify rfkill port	2011-05-09 10:48:47 -04:00
pnp	Fix common misspellings	2011-03-31 11:26:23 -03:00
power	drivers: Final irq namespace conversion	2011-03-29 14:48:19 +02:00
pps	Fix common misspellings	2011-03-31 11:26:23 -03:00
ps3	Fix common misspellings	2011-03-31 11:26:23 -03:00
rapidio	rapidio: fix default routing initialization	2011-05-18 02:55:22 -07:00
regulator	Fix common misspellings	2011-03-31 11:26:23 -03:00
rtc	Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2011-05-17 08:02:04 -07:00
s390	Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block	2011-05-18 06:49:02 -07:00
sbus	Fix common misspellings	2011-03-31 11:26:23 -03:00
scsi	Merge branch 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6	2011-05-18 13:25:57 -07:00
sfi	Fix common misspellings	2011-03-31 11:26:23 -03:00
sh	sh: Fix irq cleanup fallout	2011-03-30 00:15:49 +02:00
sn
spi	Merge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6	2011-04-11 15:44:38 -07:00
ssb	Fix common misspellings	2011-03-31 11:26:23 -03:00
staging	Merge branch 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6	2011-05-04 14:23:41 -07:00
target	Fix common misspellings	2011-03-31 11:26:23 -03:00
tc
telephony	Fix common misspellings	2011-03-31 11:26:23 -03:00
thermal
tty	drivercore: revert addition of of_match to struct device	2011-05-18 12:32:23 -06:00
uio	Fix common misspellings	2011-03-31 11:26:23 -03:00
usb	drivercore: revert addition of of_match to struct device	2011-05-18 12:32:23 -06:00
uwb	Fix common misspellings	2011-03-31 11:26:23 -03:00
vhost
video	Merge branch 'fbmem'	2011-05-14 11:24:32 -07:00
virtio	virtio_pci: Prevent double-free of pci regions after device hot-unplug	2011-04-21 22:57:00 +09:30
vlynq	vlynq: Convert irq functions	2011-03-28 19:33:04 +02:00
w1	Fix common misspellings	2011-03-31 11:26:23 -03:00
watchdog	drivercore: revert addition of of_match to struct device	2011-05-18 12:32:23 -06:00
xen	PM: Add missing syscore_suspend() and syscore_resume() calls	2011-04-20 00:36:11 +02:00
zorro
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