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linux/drivers
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Linus Torvalds af3e9579ec Revert "iommu/dma: Add config for PCI SAC address trick" 
This reverts commit 4bf7fda4dc.

It turns out that it was hopelessly naive to think that this would work,
considering that we've always done this.  The first machine I actually
tested this on broke at bootup, getting to

    Reached target cryptsetup.target - Local Encrypted Volumes.

and then hanging.  It's unclear what actually fails, since there's a lot
else going on around that time (eg amdgpu probing also happens around
that same time, but it could be some other random init thing that didn't
complete earlier and just caused the boot to hang at that point).

The expectations that we should default to some unsafe and untested mode
seems entirely unfounded, and the belief that this wouldn't affect
modern systems is clearly entirely false.  The machine in question is
about two years old, so it's not exactly shiny, but it's also not some
dusty old museum piece PDP-11 in a closet.

Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: John Garry <john.garry@huawei.com>
Cc: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-08-06 13:24:56 -07:00
..
accessibility
acpi IOMMU Updates for Linux v5.20/v6.0: 2022-08-06 10:42:38 -07:00
amba
android - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
ata dma-mapping updates 2022-08-06 10:56:45 -07:00
atm
auxdisplay
base Driver core / kernfs changes for 6.0-rc1 2022-08-04 11:31:20 -07:00
bcma
block - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
bluetooth SPDX changes for 6.0-rc1 2022-08-04 12:12:54 -07:00
bus SPDX changes for 6.0-rc1 2022-08-04 12:12:54 -07:00
cdrom
char IOMMU Updates for Linux v5.20/v6.0: 2022-08-06 10:42:38 -07:00
clk The clk core gains a new set of APIs that allow drivers to both acquire clks 2022-08-04 18:40:08 -07:00
clocksource
comedi pci-v5.20-changes 2022-08-04 19:30:35 -07:00
connector
counter
cpufreq SPDX changes for 6.0-rc1 2022-08-04 12:12:54 -07:00
cpuidle SPDX changes for 6.0-rc1 2022-08-04 12:12:54 -07:00
crypto This update includes the following changes: 2022-08-02 17:45:14 -07:00
cxl
dax
dca
devfreq Char / Misc driver changes for 6.0-rc1 2022-08-04 11:05:48 -07:00
dio
dma pci-v5.20-changes 2022-08-04 19:30:35 -07:00
dma-buf drm for 5.20/6.0 2022-08-03 19:52:08 -07:00
edac platform-drivers-x86 for v6.0-1 2022-08-04 18:19:14 -07:00
eisa
extcon
firewire firewire: net: Make use of get_unaligned_be48(), put_unaligned_be48() 2022-07-28 22:21:54 -07:00
firmware sound updates for 6.0-rc1 2022-08-06 10:19:51 -07:00
fpga
fsi
gnss
gpio gpio: updates for v6.0-rc1 2022-08-04 18:34:05 -07:00
gpu IOMMU Updates for Linux v5.20/v6.0: 2022-08-06 10:42:38 -07:00
greybus
hid platform-drivers-x86 for v6.0-1 2022-08-04 18:19:14 -07:00
hsi
hte
hv
hwmon hwmon updates for v5.20 2022-08-02 11:07:04 -07:00
hwspinlock
hwtracing asm-generic: updates for 6.0 2022-08-05 10:07:23 -07:00
i2c platform-drivers-x86 for v6.0-1 2022-08-04 18:19:14 -07:00
i3c
idle Power management updates for 5.20-rc1 2022-08-02 11:17:00 -07:00
iio
infiniband dma-mapping updates 2022-08-06 10:56:45 -07:00
input parisc architecture fixes and updates for kernel v5.20-rc1: 2022-08-05 09:58:58 -07:00
interconnect
iommu Revert "iommu/dma: Add config for PCI SAC address trick" 2022-08-06 13:24:56 -07:00
ipack
irqchip asm-generic: updates for 6.0 2022-08-05 10:07:23 -07:00
isdn
leds
macintosh
mailbox
mcb
md - Add flags argument to dm_bufio_client_create and introduce 2022-08-06 11:09:55 -07:00
media sound updates for 6.0-rc1 2022-08-06 10:19:51 -07:00
memory SPDX changes for 6.0-rc1 2022-08-04 12:12:54 -07:00
memstick MMC core: 2022-08-04 19:41:09 -07:00
message
mfd - Core Frameworks 2022-08-06 10:25:16 -07:00
misc - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
mmc MMC core: 2022-08-04 19:41:09 -07:00
most
mtd MTD core changes: 2022-08-05 14:13:45 -07:00
mux
net Tracing updates for 5.20 / 6.0 2022-08-05 09:41:12 -07:00
nfc
ntb
nubus
nvdimm - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
nvme dma-mapping updates 2022-08-06 10:56:45 -07:00
nvmem SPDX changes for 6.0-rc1 2022-08-04 12:12:54 -07:00
of - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
opp
parisc parisc architecture fixes and updates for kernel v5.20-rc1: 2022-08-05 09:58:58 -07:00
parport
pci dma-mapping updates 2022-08-06 10:56:45 -07:00
pcmcia
peci
perf
phy pci-v5.20-changes 2022-08-04 19:30:35 -07:00
pinctrl platform-drivers-x86 for v6.0-1 2022-08-04 18:19:14 -07:00
platform platform-drivers-x86 for v6.0-1 2022-08-04 18:19:14 -07:00
pnp
power platform-drivers-x86 for v6.0-1 2022-08-04 18:19:14 -07:00
powercap Power management updates for 5.20-rc1 2022-08-02 11:17:00 -07:00
pps
ps3
ptp SPDX changes for 6.0-rc1 2022-08-04 12:12:54 -07:00
pwm SPDX changes for 6.0-rc1 2022-08-04 12:12:54 -07:00
rapidio
ras
regulator chrome platform changes for 5.20 2022-08-04 18:13:19 -07:00
remoteproc
reset ARM: SoC: late updates for 6.0 2022-08-05 10:02:33 -07:00
rpmsg
rtc
s390 VFIO updates for v6.0-rc1 2022-08-06 08:59:35 -07:00
sbus
scsi dma-mapping updates 2022-08-06 10:56:45 -07:00
sh
siox
slimbus
soc asm-generic: updates for 6.0 2022-08-05 10:07:23 -07:00
soundwire sound updates for 6.0-rc1 2022-08-06 10:19:51 -07:00
spi Driver core / kernfs changes for 6.0-rc1 2022-08-04 11:31:20 -07:00
spmi
ssb
staging Staging driver patches for 6.0-rc1 2022-08-04 12:01:42 -07:00
target SCSI misc on 20220804 2022-08-04 19:47:37 -07:00
tc
tee
thermal SPDX changes for 6.0-rc1 2022-08-04 12:12:54 -07:00
thunderbolt USB / Thunderbolt changes for 6.0-rc1 2022-08-04 11:41:28 -07:00
tty asm-generic: updates for 6.0 2022-08-05 10:07:23 -07:00
ufs SCSI misc on 20220804 2022-08-04 19:47:37 -07:00
uio
usb dma-mapping updates 2022-08-06 10:56:45 -07:00
vdpa
vfio VFIO updates for v6.0-rc1 2022-08-06 08:59:35 -07:00
vhost
video - Core Frameworks 2022-08-06 10:33:34 -07:00
virt Char / Misc driver changes for 6.0-rc1 2022-08-04 11:05:48 -07:00
virtio - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
vlynq
w1
watchdog platform-drivers-x86 for v6.0-1 2022-08-04 18:19:14 -07:00
xen - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
zorro
Kconfig
Makefile Staging driver patches for 6.0-rc1 2022-08-04 12:01:42 -07:00