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David Woodhouse 9af88143b2 iommu: fix Intel IOMMU write-buffer flushing 
This is the cause of the DMA faults and disk corruption that people have
been seeing. Some chipsets neglect to report the RWBF "capability" --
the flag which says that we need to flush the chipset write-buffer when
changing the DMA page tables, to ensure that the change is visible to
the IOMMU.

Override that bit on the affected chipsets, and everything is happy
again.

Thanks to Chris and Bhavesh and others for helping to debug.

Should resolve:

  https://bugzilla.redhat.com/show_bug.cgi?id=479996
  http://bugzilla.kernel.org/show_bug.cgi?id=12578

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Tested-and-acked-by: Chris Wright <chrisw@sous-sol.org>
Reviewed-by: Bhavesh Davda <bhavesh@vmware.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-14 22:47:09 +01:00
..
accessibility
acpi Merge branches 'release', 'asus', 'bugzilla-12450', 'cpuidle', 'debug', 'ec', 'misc', 'printk' and 'processor' into release 2009-02-07 01:34:56 -05:00
amba
ata Fix my email address in qd65xx.[ch]/pata_qdi.c 2009-02-03 16:53:56 -08:00
atm drivers/atm: introduce missing kfree 2009-02-08 17:00:02 -08:00
auxdisplay
base driver-core: fix kernel-doc parameter name 2009-01-28 15:55:48 -08:00
block powerpc/ps3: Printing fixups for l64 to ll64 conversion drivers/block 2009-01-16 16:15:13 +11:00
bluetooth
cdrom
char sx.c: fix missed unlock_kernel() on error path in sx_fw_ioctl() 2009-02-05 12:56:48 -08:00
clocksource
connector
cpufreq [CPUFREQ] Make ignore_nice_load setting of ondemand work as expected. 2009-02-05 12:25:26 -05:00
cpuidle
crypto
dca dca: redesign locks to fix deadlocks 2009-02-02 23:26:57 -08:00
dio m68k: dio - Kill resource_size_t format warnings 2009-01-12 20:56:42 +01:00
dma i.MX31: Image Processing Unit DMA and IRQ drivers 2009-01-19 15:36:21 -07:00
edac powerpc: More printing warning fixes for the l64 to ll64 conversion 2009-01-28 17:15:52 +11:00
eisa
firewire firewire: core: Remove card from list of cards when enable fails 2009-02-01 11:17:24 +01:00
firmware DMI: Introduce dmi_first_match to make the interface more flexible 2009-01-27 02:15:47 -05:00
gpio gpiolib: fix request related issue 2009-01-29 18:04:43 -08:00
gpu i915: Fix more size_t format string warnings 2009-02-09 08:57:29 -08:00
hid HID: document difference between hid_blacklist and hid_ignore_list 2009-01-29 11:23:12 +01:00
hwmon lis3lv02d: add axes knowledge for HP 6710 2009-02-05 12:56:47 -08:00
i2c i2c: Move old eeprom driver to /drivers/misc/eeprom 2009-01-26 21:19:53 +01:00
ide Fix my email address in qd65xx.[ch]/pata_qdi.c 2009-02-03 16:53:56 -08:00
idle
ieee1394 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2009-02-06 08:48:16 -08:00
infiniband Merge branches 'ehca', 'ipoib' and 'mlx4' into for-linus 2009-01-16 15:05:54 -08:00
input
isdn drivers/isdn: introduce missing kfree 2009-02-08 17:00:49 -08:00
leds lis3lv02d: merge with leds hp disk 2009-01-15 16:39:40 -08:00
lguest lguest: Fix a memory leak with the lg object during launcher close 2009-01-30 11:34:11 +10:30
macintosh
mca
md md: Ensure an md array never has too many devices. 2009-02-06 18:02:46 +11:00
media V4L/DVB (10411): s5h1409: Perform s5h1409 soft reset after tuning 2009-02-01 10:41:02 -02:00
memstick
message [SCSI] mpt fusion: Add Firmware debug support 2009-01-13 10:36:02 -06:00
mfd mfd: Remove non exported references from pcf50633 2009-01-15 11:50:58 +01:00
misc sgi-xp: fix writing past the end of kzalloc()'d space 2009-02-05 12:56:49 -08:00
mmc pxamci: enable DMA for write ops after CMD/RESP 2009-02-02 20:57:07 +01:00
mtd Merge master.kernel.org:/home/rmk/linux-2.6-arm 2009-02-03 16:52:10 -08:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2009-02-10 11:48:11 -08:00
nubus
of
oprofile oprofile: fix uninitialized use of struct op_entry 2009-01-17 17:26:39 +01:00
parisc Documentation: move DMA-mapping.txt to Doc/PCI/ 2009-01-29 18:19:29 -08:00
parport
pci iommu: fix Intel IOMMU write-buffer flushing 2009-02-14 22:47:09 +01:00
pcmcia powerpc: Change u64/s64 to a long long integer type 2009-01-13 14:47:59 +11:00
platform Merge branches 'release', 'asus', 'bugzilla-12450', 'cpuidle', 'debug', 'ec', 'misc', 'printk' and 'processor' into release 2009-02-07 01:34:56 -05:00
pnp
power power_supply: pda_power: Don't request shared IRQs w/ IRQF_DISABLED 2009-01-26 02:09:26 +03:00
ps3 powerpc/ps3: Printing fixups for l64 to ll64 conversion drivers/ps3 2009-01-16 16:15:14 +11:00
rapidio
regulator leds: Fix bounds checking of wm8350->pmic.led 2009-01-30 21:50:49 +00:00
rtc rtc-ds1390: fix compilation warnings in drivers/rtc/rtc-ds1390.c 2009-02-05 12:56:48 -08:00
s390 [S390] dasd: fix race in dasd timer handling 2009-02-11 10:37:40 +01:00
sbus
scsi [SCSI] ibmvfc: Fix DMA mapping leak on memory allocation failure 2009-01-25 08:14:53 -06:00
serial Add enable_ms to jsm driver 2009-01-30 08:40:54 -08:00
sh
sn
spi spi: Move at25 (for SPI eeproms) to /drivers/misc/eeprom 2009-01-26 21:19:54 +01:00
ssb
staging Staging: panel: fix lcd panel driver build failure 2009-02-09 11:26:18 -08:00
tc
telephony
thermal
uio
usb USB: Storage: Update unusual_devs entry for Datafab KECF-USB 2009-02-09 11:19:49 -08:00
uwb uwb: lock rc->rsvs_lock with spin_lock_bh() 2009-01-23 12:57:20 +00:00
video Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2009-02-09 08:52:28 -08:00
virtio virtio-pci: do not oops on config change if driver not loaded 2009-02-02 19:17:56 -08:00
w1
watchdog [ARM] omap: watchdog: allow OMAP watchdog driver on OMAP34xx platforms 2009-01-24 16:48:42 +00:00
xen xen: make sysfs files behave as their names suggest 2009-01-29 13:20:36 +01:00
zorro m68k: zorro - Use %pR to print resources 2009-01-12 20:56:43 +01:00
Kconfig
Makefile