Oak Zeng ae28e34400 drm/xe: Allow scratch page under fault mode for certain platform ... Normally scratch page is not allowed when a vm is operate under page fault mode, i.e., in the existing codes, DRM_XE_VM_CREATE_FLAG_SCRATCH_PAGE and DRM_XE_VM_CREATE_FLAG_FAULT_MODE are mutual exclusive. The reason is fault mode relies on recoverable page to work, while scratch page can mute recoverable page fault. On xe2 and xe3, out of bound prefetch can cause page fault and further system hang because xekmd can't resolve such page fault. SYCL and OCL language runtime requires out of bound prefetch to be silently dropped without causing any functional problem, thus the existing behavior doesn't meet language runtime requirement. At the same time, HW prefetching can cause page fault interrupt. Due to page fault interrupt overhead (i.e., need Guc and KMD involved to fix the page fault), HW prefetching can be slowed by many orders of magnitude. Fix those problems by allowing scratch page under fault mode for xe2 and xe3. With scratch page in place, HW prefetching could always hit scratch page instead of causing interrupt. A side effect is, scratch page could hide application program error. Application out of bound accesses are hided by scratch page mapping, instead of get reported to user. v2: Refine commit message (Thomas) v3: Move the scratch page flag check to after scratch page wa (Thomas) v4: drop NEEDS_SCRATCH macro (matt) Add a comment to DRM_XE_VM_CREATE_FLAG_SCRATCH_PAGE Signed-off-by: Oak Zeng <oak.zeng@intel.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> Link: https://lore.kernel.org/r/20250403165328.2438690-4-oak.zeng@intel.com Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>		2025-04-07 11:17:30 +05:30
..
accel	accel/amdxdna: Check interrupt register before mailbox_rx_worker exits	2025-02-27 08:41:46 -06:00
accessibility
acpi	ACPI: platform_profile: Add support for hidden choices	2025-03-04 20:45:34 +01:00
amba
android	binderfs: fix use-after-free in binder_devices	2025-02-20 15:20:11 +01:00
ata	ata fixes for 6.14-rc5	2025-03-01 08:59:29 -08:00
atm	Get rid of 'remove_new' relic from platform driver struct	2024-12-01 15:12:43 -08:00
auxdisplay	auxdisplay for v6.14-1	2025-01-24 08:03:52 -08:00
base	Linux 6.14-rc6	2025-03-12 09:43:12 +10:00
bcma	Get rid of 'remove_new' relic from platform driver struct	2024-12-01 15:12:43 -08:00
block	block-6.14-20250306	2025-03-07 11:12:33 -10:00
bluetooth	bluetooth: btusb: Initialize .owner field of force_poll_sync_fops	2025-02-27 16:50:05 -05:00
bus	Linux 6.14-rc6	2025-03-12 09:43:12 +10:00
cache
cdrom	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
cdx	cdx: Fix possible UAF error in driver_override_show()	2025-02-20 15:19:07 +01:00
char	Char/Misc/IIO driver fixes for 6.14-rc6	2025-03-09 09:07:54 -10:00
clk	The various patchsets are summarized below. Plus of course many	2025-01-26 18:36:23 -08:00
clocksource	irqchip/jcore-aic, clocksource/drivers/jcore: Fix jcore-pit interrupt request	2025-02-17 23:27:49 +01:00
comedi
connector
counter	module: Convert symbol namespace to string literal	2024-12-02 11:34:44 -08:00
cpufreq	amd-pstate fixes 2/6/25	2025-02-06 20:39:43 +01:00
cpuidle	More power management updates for 6.14-rc1	2025-01-30 15:10:34 -08:00
crypto	crypto: ccp: Add external API interface for PSP module initialization	2025-02-14 18:39:19 -05:00
cxl	cxl changes for v6.14	2025-01-29 11:23:22 -08:00
dax	module: Convert symbol namespace to string literal	2024-12-02 11:34:44 -08:00
dca
devfreq	Update devfreq next for v6.14	2025-01-13 20:48:34 +01:00
dio
dma	dmaengine fixes for v6.14	2025-03-02 10:08:45 -08:00
dma-buf	Merge drm/drm-next into drm-misc-next	2025-02-06 13:47:32 +01:00
dpll
edac	EDAC/qcom: Correct interrupt enable register configuration	2025-02-14 20:36:11 +01:00
eisa
extcon	Update extcon next for v6.14	2025-01-12 13:44:27 +01:00
firewire	Driver core and debugfs updates	2025-01-28 12:25:12 -08:00
firmware	EFI fixes for v6.14 #2	2025-02-28 08:47:21 -08:00
fpga	FPGA Manager changes for 6.14-rc1	2025-01-09 10:56:57 +01:00
fsi	Get rid of 'remove_new' relic from platform driver struct	2024-12-01 15:12:43 -08:00
gnss
gpio	gpio: rcar: Fix missing of_node_put() call	2025-03-06 15:51:27 +01:00
gpu	drm/xe: Allow scratch page under fault mode for certain platform	2025-04-07 11:17:30 +05:30
greybus
hid	hid-for-linus-2025030501	2025-03-05 07:46:59 -10:00
hsi	Get rid of 'remove_new' relic from platform driver struct	2024-12-01 15:12:43 -08:00
hte	Get rid of 'remove_new' relic from platform driver struct	2024-12-01 15:12:43 -08:00
hv	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
hwmon	hwmon: fix a NULL vs IS_ERR_OR_NULL() check in xgene_hwmon_probe()	2025-03-03 06:04:34 -08:00
hwspinlock	Get rid of 'remove_new' relic from platform driver struct	2024-12-01 15:12:43 -08:00
hwtracing	intel_th: pci: Add Panther Lake-P/U support	2025-02-20 09:35:57 +01:00
i2c	i2c: amd-asf: Fix EOI register write to enable successive interrupts	2025-02-26 23:28:41 +01:00
i3c	I3C for 6.14	2025-01-24 15:48:01 -08:00
idle	intel_idle: Handle older CPUs, which stop the TSC in deeper C states, correctly	2025-02-28 22:04:26 +01:00
iio	iio: filter: admv8818: Force initialization of SDO	2025-02-08 12:46:32 +00:00
infiniband	RDMA/bnxt_re: Fix the page details for the srq created by kernel consumers	2025-02-23 06:57:56 -05:00
input	platform-drivers-x86 for v6.14-1	2025-01-24 07:18:39 -08:00
interconnect	interconnect changes for 6.14	2025-01-16 14:01:40 +01:00
iommu	iommu/vt-d: Fix suspicious RCU usage	2025-02-28 12:19:01 +01:00
ipack
irqchip	irqchip/qcom-pdc: Workaround hardware register bug on X1E80100	2025-02-21 09:47:06 +01:00
isdn	isdn: Remove unused get_Bprotocol4id()	2024-12-11 20:12:27 -08:00
leds	Driver core and debugfs updates	2025-01-28 12:25:12 -08:00
macintosh	The various patchsets are summarized below. Plus of course many	2025-01-26 18:36:23 -08:00
mailbox	mailbox: th1520: Fix memory corruption due to incorrect array size	2025-01-18 16:20:55 -06:00
mcb	module: Convert symbol namespace to string literal	2024-12-02 11:34:44 -08:00
md	- dm-vdo: add missing spin_lock_init	2025-02-24 16:29:48 -08:00
media	media: cec: move driver for TDA9950 from drm/i2c	2025-02-13 00:17:42 +02:00
memory	spi: Support DTR in spi-mem	2025-01-15 19:07:39 +01:00
memstick	Char/Misc/IIO driver updates for 6.14-rc1	2025-01-27 16:51:51 -08:00
message	Merge branch '6.13/scsi-fixes' into 6.14/scsi-staging	2025-01-10 15:20:30 -05:00
mfd	mfd: syscon: Restore device_node_to_regmap() for non-syscon nodes	2025-02-11 14:53:39 +00:00
misc	Revert "drivers/card_reader/rtsx_usb: Restore interrupt based detection"	2025-02-27 12:24:53 -08:00
mmc	mmc: mtk-sd: Fix register settings for hs400(es) mode	2025-02-03 13:34:50 +01:00
most
mtd	Fix writes on SST flashes	2025-02-19 14:38:47 +01:00
mux	mux: constify mux class	2025-01-10 10:15:04 +01:00
net	mctp i3c: handle NULL header address	2025-03-06 10:33:07 +01:00
nfc	nfc: mrvl: Don't use "proxy" headers	2025-01-18 17:10:05 -08:00
ntb	PCI: Remove devres from pci_intx()	2025-01-18 14:38:49 -06:00
nubus
nvdimm	driver core: Constify API device_find_child() and adapt for various usages	2025-01-03 11:19:35 +01:00
nvme	nvme-tcp: fix signedness bug in nvme_tcp_init_connection()	2025-03-05 10:37:01 -08:00
nvmem	nvmem: core: improve range check for nvmem_cell_write()	2025-01-10 16:16:48 +01:00
of	Revert "of: reserved-memory: Fix using wrong number of cells to get property 'alignment'"	2025-02-26 13:39:28 -06:00
opp	Driver core and debugfs updates	2025-01-28 12:25:12 -08:00
parisc	Get rid of 'remove_new' relic from platform driver struct	2024-12-01 15:12:43 -08:00
parport	serial: 8250_pci: Share WCH IDs with parport_serial driver	2024-12-04 16:42:55 +01:00
pci	pci-v6.14-fixes-3	2025-02-14 16:49:07 -08:00
pcmcia	Get rid of 'remove_new' relic from platform driver struct	2024-12-01 15:12:43 -08:00
peci	module: Convert symbol namespace to string literal	2024-12-02 11:34:44 -08:00
perf	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
phy	phy: tegra: xusb: reset VBUS & ID OVERRIDE	2025-02-14 18:03:05 +05:30
pinctrl	pinctrl: pinconf-generic: Print unsigned value if a format is registered	2025-02-06 10:13:15 +01:00
platform	ACPI fix for 6.14-rc6	2025-03-07 12:17:42 -10:00
pmdomain	pmdomain: airoha: Fix compilation error with Clang-20 and Thumb2 mode	2025-01-21 10:45:24 +01:00
pnp
power	power: supply: axp20x_battery: Fix fault handling for AXP717	2025-02-03 12:41:18 +01:00
powercap	Merge branch 'pm-powercap'	2025-02-07 12:43:58 +01:00
pps	pps: clients: gpio: Bypass edge's direction check when not needed	2025-01-10 16:12:33 +01:00
ps3
ptp	ptp: vmclock: Remove goto-based cleanup logic	2025-02-11 10:20:52 +01:00
pwm	Driver core and debugfs updates	2025-01-28 12:25:12 -08:00
rapidio	rapidio: add check for rio_add_net() in rio_scan_alloc_net()	2025-03-05 21:36:19 -08:00
ras	x86/amd_nb: Move SMN access code to a new amd_node driver	2025-01-08 10:59:44 +01:00
regulator	regulator: core: let dt properties override driver init_data	2025-02-11 16:29:01 +00:00
remoteproc	remoteproc: st: Use syscon_regmap_lookup_by_phandle_args	2025-01-15 10:04:27 -07:00
reset	soc: driver updates for 6.14	2025-01-24 14:56:59 -08:00
rpmsg	driver core: Constify API device_find_child() and adapt for various usages	2025-01-03 11:19:35 +01:00
rtc	RTC for 6.13	2025-01-30 17:50:02 -08:00
s390	Smaller than usual with no fixes from any subtree.	2025-02-20 10:19:54 -08:00
sbus	Get rid of 'remove_new' relic from platform driver struct	2024-12-01 15:12:43 -08:00
scsi	scsi: core: Clear driver private data when retrying request	2025-02-20 21:20:58 -05:00
sh	sh updates for v6.13	2024-11-30 14:45:29 -08:00
siox
slimbus	slimbus: messaging: Free transaction ID in delayed interrupt scenario	2025-02-20 15:19:51 +01:00
soc	soc: loongson: loongson2_guts: Add check for devm_kstrdup()	2025-02-20 22:29:05 +01:00
soundwire	soundwire updates for 6.14	2025-01-29 14:38:19 -08:00
spi	spi: sn-f-ospi: Fix division by zero	2025-02-06 11:33:51 +00:00
spmi	spmi: hisi-spmi-controller: Drop duplicated OF node assignment in spmi_controller_probe()	2025-01-17 12:58:49 +01:00
ssb
staging	fbtft: Remove access to page->index	2025-03-05 08:38:21 +01:00
target	Merge branch '6.14/scsi-queue' into 6.14/scsi-fixes	2025-02-03 16:28:51 -05:00
tc
tee	tee: optee: Fix supplicant wait loop	2025-02-14 15:17:34 +01:00
thermal	thermal: gov_power_allocator: Update total_weight on bind and cdev updates	2025-02-25 12:30:45 +01:00
thunderbolt	Driver core and debugfs updates	2025-01-28 12:25:12 -08:00
tty	Serial driver fixes for 6.14-rc3	2025-02-16 12:50:44 -08:00
ufs	scsi: ufs: core: bsg: Fix crash when arpmb command fails	2025-02-20 22:18:24 -05:00
uio	Char/Misc/IIO driver updates for 6.14-rc1	2025-01-27 16:51:51 -08:00
usb	usb: typec: ucsi: Fix NULL pointer access	2025-03-06 16:55:46 +01:00
vdpa	virtio: features, fixes, cleanups	2025-01-27 15:26:06 -08:00
vfio	VFIO updates for v6.14-rc1	2025-01-28 14:16:46 -08:00
vhost	vhost: return task creation error instead of NULL	2025-03-01 02:52:52 -05:00
video	gpu: nova-core: add initial driver stub	2025-03-09 19:24:27 +01:00
virt	Char/Misc/IIO driver fixes for 6.14-rc6	2025-03-09 09:07:54 -10:00
virtio	virtio: features, fixes, cleanups	2025-01-27 15:26:06 -08:00
w1	1-Wire bus drivers for v6.14	2025-01-09 10:54:19 +01:00
watchdog	linux-watchdog 6.14-rc1 tag	2025-01-25 16:19:10 -08:00
xen	xen: branch for v6.14-rc3	2025-02-14 08:15:17 -08:00
zorro	zorro: Constify 'struct bin_attribute'	2025-01-08 18:04:36 +01:00
Kconfig
Makefile