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Alex Williamson 1b24e0e487 intel-iommu: Fix leaks in pagetable freeing 
commit 3269ee0bd6 upstream.

At best the current code only seems to free the leaf pagetables and
the root.  If you're unlucky enough to have a large gap (like any
QEMU guest with more than 3G of memory), only the first chunk of leaf
pagetables are freed (plus the root).  This is a massive memory leak.
This patch re-writes the pagetable freeing function to use a
recursive algorithm and manages to not only free all the pagetables,
but does it without any apparent performance loss versus the current
broken version.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 17:18:27 -07:00
..
accessibility
acpi ACPI / LPSS: don't crash if a device has no MMIO resources 2013-09-26 17:18:05 -07:00
amba
ata libata: apply behavioral quirks to sil3826 PMP 2013-08-29 09:47:38 -07:00
atm atm: he: use mdelay instead of large udelay constants 2013-04-29 13:26:48 -04:00
auxdisplay
base regmap: rbtree: Fix overlapping rbnodes. 2013-09-07 22:10:00 -07:00
bcma bcma: add more core IDs 2013-05-17 14:31:05 -04:00
block xen-blkfront: use a different scatterlist for each request 2013-08-11 18:35:24 -07:00
bluetooth Bluetooth: fix wrong use of PTR_ERR() in btusb 2013-08-11 18:35:23 -07:00
bus
cdrom drivers/cdrom/cdrom.c: use kzalloc() for failing hardware 2013-07-13 11:42:26 -07:00
char virtio: console: return -ENODEV on all read operations after unplug 2013-08-14 22:59:09 -07:00
clk ARM: tegra30: clocks: Fix pciex clock registration 2013-06-16 11:25:45 -07:00
clocksource clocksource: dw_apb: Fix error check 2013-07-25 14:07:29 -07:00
connector
cpufreq cpufreq: rename ignore_nice as ignore_nice_load 2013-08-14 22:59:06 -07:00
cpuidle cpuidle: coupled: fix race condition between pokes and safe state 2013-09-26 17:18:02 -07:00
crypto crypto: caam - Fixed the memory out of bound overwrite issue 2013-08-04 16:50:57 +08:00
dca
devfreq
dio
dma dma: pl330: Fix cyclic transfers 2013-08-11 18:35:21 -07:00
edac EDAC: Fix lockdep splat 2013-07-28 16:30:11 -07:00
eisa PCI changes for the v3.10 merge window: 2013-04-29 09:30:25 -07:00
extcon Removal of GENERIC_GPIO for v3.10 2013-05-09 09:59:16 -07:00
firewire firewire: fix libdc1394/FlyCap2 iso event regression 2013-08-04 16:50:38 +08:00
firmware efivar: fix oops in efivar_update_sysfs_entries() caused by memory reuse 2013-05-13 20:20:02 +01:00
gpio gpio/omap: don't use linear domain mapping for OMAP1 2013-06-25 23:13:40 -07:00
gpu drm/i915: ivb: fix edp voltage swing reg val 2013-09-07 22:09:58 -07:00
hid HID: usbhid: quirk for N-Trig DuoSense Touch Screen 2013-09-26 17:18:17 -07:00
hsi
hv Drivers: hv: balloon: Do not post pressure status if interrupted 2013-08-04 16:50:58 +08:00
hwmon hwmon: (k10temp) Add support for Fam16h (Kabini) 2013-09-07 22:09:59 -07:00
hwspinlock A single patch from Vincent extending OMAP's hwspinlock support to OMAP5. 2013-05-07 14:01:27 -07:00
i2c i2c: i2c-mxs: Use DMA mode even for small transfers 2013-08-14 22:59:06 -07:00
ide block_device_operations->release() should return void 2013-05-07 02:16:21 -04:00
idle Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2013-05-11 15:23:17 -07:00
iio iio: inkern: fix iio_convert_raw_to_processed_unlocked 2013-07-25 14:07:23 -07:00
infiniband iscsi-target: Fix iscsit_sequence_cmd reject handling for iser 2013-08-04 16:51:17 +08:00
input HID: Correct the USB IDs for the new Macbook Air 6 2013-09-26 17:18:15 -07:00
iommu intel-iommu: Fix leaks in pagetable freeing 2013-09-26 17:18:27 -07:00
ipack
irqchip ARM: SoC fixes for 3.10-rc 2013-06-22 09:44:45 -10:00
isdn isdn/kcapi: fix a small underflow 2013-05-20 13:38:14 -07:00
leds leds: wm831x-status: Request a REG resource 2013-09-26 17:18:27 -07:00
lguest lguest: clear cached last cpu when guest_set_pgd() called. 2013-05-08 10:49:18 +09:30
macintosh powerpc/windfarm: Fix noisy slots-fan on Xserve (rm31) 2013-08-11 18:35:20 -07:00
mailbox
md bcache: FUA fixes 2013-08-29 09:47:40 -07:00
media media: siano: fix divide error on 0 counters 2013-09-26 17:18:27 -07:00
memory drivers/memory: don't check resource with devm_ioremap_resource 2013-05-18 11:55:52 +02:00
memstick block_device_operations->release() should return void 2013-05-07 02:16:21 -04:00
message Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block 2013-05-08 10:13:35 -07:00
mfd mfd: tps6586x: correct device name of the regulator cell 2013-06-24 12:37:47 +01:00
misc drivers/misc/hpilo: Correct panic when an AUX iLO is detected 2013-09-07 22:09:59 -07:00
mmc mmc: omap_hsmmc: Skip platform_get_resource_byname() for dt case 2013-05-26 14:23:11 -04:00
mtd UBI: Fix PEB leak in wear_leveling_worker() 2013-09-26 17:18:01 -07:00
net ath9k: avoid accessing MRC registers on single-chain devices 2013-09-26 17:18:15 -07:00
nfc NFC: mei: Do not disable MEI devices from their remove routine 2013-05-21 10:48:41 +02:00
ntb NTB: Multiple NTB client fix 2013-05-15 10:58:22 -07:00
nubus nubus: Kill nubus_proc_detach_device() 2013-05-04 14:47:26 -04:00
of of: fdt: fix memory initialization for expanded DT 2013-08-29 09:47:37 -07:00
oprofile
parisc parisc: Fix interrupt routing for C8000 serial ports 2013-08-11 18:35:21 -07:00
parport parisc: parport0: fix this legacy no-device port driver! 2013-06-01 14:46:42 +02:00
pci ACPI: Try harder to resolve _ADR collisions for bridges 2013-08-29 09:47:29 -07:00
pcmcia pcmcia: at91_cf: fix gpio_get_value in at91_cf_get_status 2013-07-21 18:21:25 -07:00
pinctrl pinctrl: at91: fix get_pullup/down function return 2013-09-26 17:18:14 -07:00
platform drivers/platform/olpc/olpc-ec.c: initialise earlier 2013-08-29 09:47:38 -07:00
pnp Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-05-02 10:16:16 -07:00
power charger-manager: Ensure event is not used as format string 2013-07-13 11:42:26 -07:00
pps Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
ps3
ptp ptp_pch: fix error handling in pch_probe() 2013-05-25 21:24:15 -07:00
pwm drivers/pwm: don't check resource with devm_ioremap_resource 2013-05-18 11:55:58 +02:00
rapidio RAPIDIO: IDT_GEN2: Fix build error. 2013-07-28 16:30:07 -07:00
regulator mfd: tps6586x: correct device name of the regulator cell 2013-06-24 12:37:47 +01:00
remoteproc This pull request contains: 2013-05-07 14:04:56 -07:00
reset
rpmsg A small pull request consisting of: 2013-05-07 14:02:00 -07:00
rtc drivers/rtc/rtc-max77686.c: Fix wrong register 2013-09-14 06:54:57 -07:00
s390 SCSI: zfcp: fix schedule-inside-lock in scsi_device list loops 2013-08-29 09:47:39 -07:00
sbus
scsi SCSI: sd: Fix potential out-of-bounds access 2013-09-26 17:18:01 -07:00
sfi
sh
sn
spi spi: spi-davinci: Fix direction in dma_map_single() 2013-08-11 18:35:25 -07:00
ssb - Lots of cleanups from Artem, including deletion of some obsolete drivers 2013-05-09 10:15:46 -07:00
ssbi
staging iio: mxs-lradc: Remove useless check in read_raw 2013-09-26 17:18:05 -07:00
target target: Fix >= v3.9+ regression in PR APTPL + ALUA metadata write-out 2013-09-26 17:18:27 -07:00
tc
thermal drivers/thermal: don't check resource with devm_ioremap_resource 2013-05-18 11:57:30 +02:00
tty tty: disassociate_ctty() sends the extra SIGCONT 2013-09-26 17:18:04 -07:00
uio uio: UIO_DMEM_GENIRQ should depend on HAS_DMA 2013-05-21 10:13:23 -07:00
usb usb: don't check pm qos NO_POWER_OFF flag in usb_port_suspend() 2013-09-26 17:18:13 -07:00
uwb uwb: rename random32() to prandom_u32() 2013-04-29 18:28:43 -07:00
vfio vfio: fix crash on rmmod 2013-06-05 08:54:16 -06:00
vhost vhost_net: poll vhost queue after marking DMA is done 2013-09-14 06:54:56 -07:00
video atmel_lcdfb: blank the backlight on remove 2013-06-01 03:18:55 +08:00
virt
virtio virtio: support unlocked queue poll 2013-07-28 16:29:55 -07:00
vlynq
vme
w1 drivers/w1/masters: don't check resource with devm_ioremap_resource 2013-05-18 11:58:03 +02:00
watchdog drivers/watchdog: don't check resource with devm_ioremap_resource 2013-05-18 11:58:04 +02:00
xen xen-gnt: prevent adding duplicate gnt callbacks 2013-09-26 17:18:02 -07:00
zorro proc: Supply PDE attribute setting accessor functions 2013-05-01 17:29:18 -04:00
Kconfig ARM: arm-soc driver changes for 3.10 2013-05-04 12:31:18 -07:00
Makefile ARM: arm-soc driver changes for 3.10 2013-05-04 12:31:18 -07:00