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Pranjal Shrivastava eab000d501 iommu/vt-d: Fail probe on ATS configuration failure 
Update the Intel VT-d driver to handle ATS configuration and enablement
more strictly. Specifically, update the device probe to fail if
pci_prepare_ats() returns an error. This ensures that any ATS-capable
master reaching the attach phase is guaranteed to have a valid config.

Additionally, update iommu_enable_pci_ats() to WARN() if pci_enable_ats
fails. Since earlier checks in the probe phase preclude config-related
failures, any failure during hardware enablement is considered a kernel
bug.

Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Samiullah Khawaja <skhawaja@google.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Pranjal Shrivastava <praan@google.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2026-07-09 10:11:03 +02:00
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accel
Merge tag 'drm-fixes-2026-07-04' of https://gitlab.freedesktop.org/drm/kernel
2026-07-03 15:42:20 -10:00
accessibility
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acpi
Merge tag 'acpi-7.2-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2026-07-03 15:13:50 -10:00
amba
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android
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ata
Merge tag 'device-id-rework' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux
2026-07-02 20:54:26 -10:00
atm
atm: remove unused ATM PHY operations
2026-06-16 08:53:53 -07:00
auxdisplay
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
base
Merge tag 'regmap-fix-v7.2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
2026-06-26 10:47:26 -07:00
bcma
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block
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2026-07-03 07:38:17 +02:00
bluetooth
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
bus
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2026-07-03 07:38:17 +02:00
cache
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2026-07-03 07:38:17 +02:00
cdrom
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cdx
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2026-07-03 07:38:17 +02:00
char
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2026-07-03 07:38:17 +02:00
clk
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
clocksource
Merge tag 'timers-vdso-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
2026-06-15 13:57:13 +05:30
comedi
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connector
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counter
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2026-07-03 07:38:17 +02:00
cpufreq
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2026-07-03 07:38:17 +02:00
cpuidle
cpuidle: Allow exit latency to exceed target residency
2026-06-23 14:00:29 +02:00
crypto
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2026-07-03 07:38:17 +02:00
cxl
Merge branch 'for-7.2/cxl-type2-attach-region' into cxl-for-next
2026-06-12 13:47:53 -07:00
dax
Merge tag 'mm-stable-2026-06-18-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-06-19 10:14:34 -07:00
dca
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devfreq
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2026-07-03 07:38:17 +02:00
dibs
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dio
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dma
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2026-07-03 07:38:17 +02:00
dma-buf
Merge drm/drm-fixes into drm-misc-fixes
2026-06-29 17:58:00 +02:00
dpll
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2026-07-03 07:38:17 +02:00
edac
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2026-07-03 07:38:17 +02:00
eisa
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extcon
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2026-07-03 07:38:17 +02:00
firewire
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
firmware
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
fpga
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2026-07-03 07:38:17 +02:00
fsi
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
fwctl
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gnss
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gpib
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
gpio
Merge tag 'gpio-fixes-for-v7.2-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
2026-07-03 05:38:12 -10:00
gpu
Merge tag 'drm-fixes-2026-07-04' of https://gitlab.freedesktop.org/drm/kernel
2026-07-03 15:42:20 -10:00
greybus
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hid
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
hsi
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2026-07-03 07:38:17 +02:00
hte
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
hv
Merge tag 'hyperv-next-signed-20260621' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
2026-06-22 08:06:13 -07:00
hwmon
Merge tag 'device-id-rework' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux
2026-07-02 20:54:26 -10:00
hwspinlock
hwspinlock: qcom: avoid uninitialized struct members
2026-06-08 21:51:12 -05:00
hwtracing
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2026-07-03 07:38:17 +02:00
i2c
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2026-07-03 07:38:17 +02:00
i3c
i3c: mipi-i3c-hci: Use named initializers for platform_device_id's .driver_data
2026-06-16 23:19:45 +02:00
idle
Merge tag 'x86-msr-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
2026-06-15 15:08:14 +05:30
iio
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
infiniband
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
2026-06-18 08:16:21 -07:00
input
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
interconnect
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
iommu
iommu/vt-d: Fail probe on ATS configuration failure
2026-07-09 10:11:03 +02:00
ipack
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irqchip
Merge tag 'irq-urgent-2026-07-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2026-07-05 05:29:41 -10:00
leds
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
macintosh
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mailbox
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2026-07-03 07:38:17 +02:00
mcb
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md
Merge tag 'block-7.2-20260625' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
2026-06-25 09:56:47 -07:00
media
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2026-07-03 07:38:17 +02:00
memory
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
memstick
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message
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mfd
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2026-07-03 07:38:17 +02:00
misc
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2026-07-03 07:38:17 +02:00
mmc
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
most
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mtd
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2026-07-03 07:38:17 +02:00
mux
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
net
Merge tag 'device-id-rework' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux
2026-07-02 20:54:26 -10:00
nfc
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
ntb
Merge tag 'ntb-7.2' of https://github.com/jonmason/ntb
2026-06-28 07:46:12 -07:00
nubus
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nvdimm
Merge tag 'libnvdimm-for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
2026-06-18 16:27:58 -07:00
nvme
Merge tag 'block-7.2-20260625' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
2026-06-25 09:56:47 -07:00
nvmem
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
of
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
opp
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parisc
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parport
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pci
PCI/ATS: Validate STU for VFs in pci_prepare_ats()
2026-07-09 10:11:03 +02:00
pcmcia
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peci
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perf
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
phy
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
pinctrl
Merge tag 'gpio-fixes-for-v7.2-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
2026-07-03 05:38:12 -10:00
platform
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
pmdomain
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
pnp
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
power
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
powercap
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pps
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2026-07-03 07:38:17 +02:00
ps3
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ptp
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2026-07-03 07:38:17 +02:00
pwm
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
rapidio
Merge tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-06-21 13:20:19 -07:00
ras
Merge tag 'edac_updates_for_v7.2_rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/ras/ras
2026-06-16 05:31:01 +05:30
regulator
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
remoteproc
remoteproc: qcom: pas: Drop start/stop completion from struct qcom_pas
2026-06-08 21:53:51 -05:00
resctrl
Merge tag 'arm64-upstream' of gitolite.kernel.org:pub/scm/linux/kernel/git/arm64/linux
2026-06-16 05:18:04 +05:30
reset
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
rpmsg
Merge tag 'rpmsg-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux
2026-06-20 23:31:15 -07:00
rtc
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
s390
Merge tag 's390-7.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2026-07-04 06:28:45 -10:00
sbus
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scsi
Merge tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-06-21 13:20:19 -07:00
sh
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siox
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
slimbus
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soc
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2026-07-03 07:38:17 +02:00
soundwire
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
spi
Merge tag 'spi-fix-v7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
2026-07-05 05:24:06 -10:00
spmi
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
ssb
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staging
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2026-07-03 07:38:17 +02:00
target
Merge branch 7.1/scsi-fixes into 7.2/scsi-staging
2026-06-15 21:01:30 -04:00
tc
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tee
Merge tag 'soc-drivers-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
2026-06-17 11:21:40 -07:00
thermal
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
thunderbolt
Merge tag 'usb-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
2026-06-22 12:09:47 -07:00
tty
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
ufs
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
2026-06-21 10:29:45 -07:00
uio
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2026-07-03 07:38:17 +02:00
usb
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2026-07-03 07:38:17 +02:00
vdpa
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
vfio
vfio/pci: Expose latched module parameter policy in debugfs
2026-06-29 14:26:31 -06:00
vhost
Merge tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-06-21 13:20:19 -07:00
video
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2026-07-03 07:38:17 +02:00
virt
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
2026-07-03 07:38:17 +02:00
virtio
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
2026-06-17 11:49:00 -07:00
w1
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2026-07-03 07:38:17 +02:00
watchdog
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2026-07-03 07:38:17 +02:00
xen
xenbus: reject unterminated directory replies
2026-07-01 10:01:14 +02:00
zorro
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Kconfig
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Makefile
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