Suravee Suthikulpanit 071f42defa iommu/amd: Use cmpxchg_double() when updating 128-bit IRTE ... commit e52d58d54a upstream. When using 128-bit interrupt-remapping table entry (IRTE) (a.k.a GA mode), current driver disables interrupt remapping when it updates the IRTE so that the upper and lower 64-bit values can be updated safely. However, this creates a small window, where the interrupt could arrive and result in IO_PAGE_FAULT (for interrupt) as shown below. IOMMU Driver Device IRQ ============ =========== irte.RemapEn=0 ... change IRTE IRQ from device ==> IO_PAGE_FAULT !! ... irte.RemapEn=1 This scenario has been observed when changing irq affinity on a system running I/O-intensive workload, in which the destination APIC ID in the IRTE is updated. Instead, use cmpxchg_double() to update the 128-bit IRTE at once without disabling the interrupt remapping. However, this means several features, which require GA (128-bit IRTE) support will also be affected if cmpxchg16b is not supported (which is unprecedented for AMD processors w/ IOMMU). Fixes: 880ac60e25 ("iommu/amd: Introduce interrupt remapping ops structure") Reported-by: Sean Osborne <sean.m.osborne@oracle.com> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Tested-by: Erik Rockstrom <erik.rockstrom@oracle.com> Reviewed-by: Joao Martins <joao.m.martins@oracle.com> Link: https://lore.kernel.org/r/20200903093822.52012-3-suravee.suthikulpanit@amd.com Signed-off-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-09-26 18:03:15 +02:00
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accessibility	…
acpi	ACPICA: Do not increment operation_region reference counts for field units	2020-08-19 08:16:05 +02:00
amba	…
android	binder: Prevent context manager from incrementing ref 0	2020-08-11 15:33:35 +02:00
ata	libata: implement ATA_HORKAGE_MAX_TRIM_128M and apply to Sandisks	2020-09-09 19:12:34 +02:00
atm	firestream: Fix memleak in fs_open	2020-09-17 13:47:45 +02:00
auxdisplay	…
base	firmware_loader: fix memory leak for paged buffer	2020-09-23 12:40:34 +02:00
bcma	…
block	rbd: require global CAP_SYS_ADMIN for mapping and unmapping	2020-09-17 13:47:53 +02:00
bluetooth	Bluetooth: hci_serdev: Only unregister device if it was registered	2020-08-19 08:16:16 +02:00
bus	bus: ti-sysc: Add missing quirk flags for usb_host_hs	2020-08-19 08:16:00 +02:00
cdrom	…
char	tpm: Unify the mismatching TPM space buffer sizes	2020-08-19 08:16:27 +02:00
clk	clk: rockchip: Fix initialization of mux_pll_src_4plls_p	2020-09-23 12:40:39 +02:00
clocksource	arm64: arch_timer: Disable the compat vdso for cores affected by ARM64_WORKAROUND_1418040	2020-07-22 09:32:51 +02:00
connector	…
counter	counter: 104-quad-8: Add lock guards - generic interface	2020-05-02 08:48:44 +02:00
cpufreq	cpufreq: intel_pstate: Fix intel_pstate_get_hwp_max() for turbo disabled	2020-09-17 13:47:49 +02:00
cpuidle	cpuidle: Fixup IRQ state	2020-09-09 19:12:21 +02:00
crypto	crypto: caam - Remove broken arc4 support	2020-08-21 13:05:32 +02:00
dax	dm: Call proper helper to determine dax support	2020-09-23 12:40:47 +02:00
dca	…
devfreq	PM / devfreq: rk3399_dmc: Fix kernel oops when rockchip,pmu is absent	2020-09-03 11:26:50 +02:00
dio	…
dma	drivers/dma/dma-jz4780: Fix race condition between probe and irq handler	2020-09-17 13:47:46 +02:00
dma-buf	dmabuf: use spinlock to access dmabuf->name	2020-07-29 10:18:29 +02:00
edac	EDAC/{i7core,sb,pnd2,skx}: Fix error event severity	2020-09-03 11:26:53 +02:00
eisa	…
extcon	extcon: adc-jack: Fix an error handling path in 'adc_jack_probe()'	2020-06-24 17:50:36 +02:00
firewire	…
firmware	efi: add missed destroy_workqueue when efisubsys_init fails	2020-08-26 10:41:07 +02:00
fpga	fpga: dfl: fix bug in port reset handshake	2020-07-29 10:18:31 +02:00
fsi	…
gnss	gnss: sirf: fix error return code in sirf_probe()	2020-06-22 09:31:20 +02:00
gpio	gpio: arizona: put pm_runtime in case of failure	2020-07-29 10:18:26 +02:00
gpu	drm/i915: Filter wake_flags passed to default_wake_function	2020-09-23 12:40:43 +02:00
greybus	…
hid	HID: elan: Fix memleak in elan_input_configured	2020-09-17 13:47:48 +02:00
hsi	…
hv	Drivers: hv: vmbus: Add timeout to vmbus_wait_for_unload	2020-09-23 12:40:40 +02:00
hwmon	hwmon: (applesmc) check status earlier.	2020-09-09 19:12:20 +02:00
hwspinlock	…
hwtracing	coresight: tmc: Fix TMC mode read in tmc_read_unprepare_etb()	2020-08-19 08:16:14 +02:00
i2c	i2c: i801: Fix resume bug	2020-09-23 12:40:44 +02:00
i3c	…
ide	ide: serverworks: potential overflow in svwks_set_pio_mode()	2020-02-24 08:36:53 +01:00
idle	…
iio	iio:accel:mma8452: Fix timestamp alignment and prevent data leak.	2020-09-17 13:47:51 +02:00
infiniband	RDMA/bnxt_re: Restrict the max_gids to 256	2020-09-23 12:40:33 +02:00
input	Input: i8042 - add Entroware Proteus EL07R4 to nomux and reset lists	2020-09-23 12:40:45 +02:00
interconnect	…
iommu	iommu/amd: Use cmpxchg_double() when updating 128-bit IRTE	2020-09-26 18:03:15 +02:00
ipack	ipack: tpci200: fix error return code in tpci200_register()	2020-05-27 17:46:47 +02:00
irqchip	irqchip/stm32-exti: Avoid losing interrupts due to clearing pending bits by mistake	2020-09-03 11:27:06 +02:00
isdn	…
leds	leds: core: Flush scheduled work for system suspend	2020-08-19 08:16:11 +02:00
lightnvm	…
macintosh	macintosh/via-macii: Access autopoll_devs when inside lock	2020-08-19 08:16:15 +02:00
mailbox	mailbox: zynqmp-ipi: Fix NULL vs IS_ERR() check in zynqmp_ipi_mbox_probe()	2020-06-24 17:50:36 +02:00
mcb	…
md	dm: Call proper helper to determine dax support	2020-09-23 12:40:47 +02:00
media	media: rc: uevent sysfs file races with rc_unregister_device()	2020-09-09 19:12:34 +02:00
memory	…
memstick	…
message	scsi: mptscsih: Fix read sense data size	2020-07-16 08:16:36 +02:00
mfd	mfd: intel-lpss: Add Intel Tiger Lake PCH-H PCI IDs	2020-09-03 11:26:43 +02:00
misc	habanalabs: check correct vmalloc return code	2020-09-09 19:12:21 +02:00
mmc	mmc: sdhci-of-esdhc: Don't walk device-tree on every interrupt	2020-09-17 13:47:53 +02:00
mtd	mtd: rawnand: fsl_upm: Remove unused mtd var	2020-08-21 13:05:30 +02:00
mux	…
net	net: phy: Do not warn in phy_stop() on PHY_DOWN	2020-09-26 18:03:15 +02:00
nfc	NFC: st95hf: Fix memleak in st95hf_in_send_cmd	2020-09-17 13:47:45 +02:00
ntb	NTB: perf: Fix race condition when run with ntb_test	2020-06-24 17:50:41 +02:00
nubus	…
nvdimm	libnvdimm/security: ensure sysfs poll thread woke up and fetch updated attr	2020-08-21 13:05:35 +02:00
nvme	nvme-tcp: cancel async events before freeing event struct	2020-09-23 12:40:37 +02:00
nvmem	nvmem: qfprom: remove incorrect write support	2020-06-10 20:24:57 +02:00
of	of: of_mdio: Correct loop scanning logic	2020-07-22 09:32:55 +02:00
opp	opp: Enable resources again if they were disabled earlier	2020-08-26 10:40:53 +02:00
oprofile	…
parisc	parisc: mask out enable and reserved bits from sba imask	2020-08-19 08:16:26 +02:00
parport	…
pci	PCI: qcom: Add missing reset for ipq806x	2020-09-03 11:26:53 +02:00
pcmcia	…
perf	drivers/perf: Prevent forced unbinding of PMU drivers	2020-07-29 10:18:40 +02:00
phy	phy: qcom-qmp: Use correct values for ipq8074 PCIe Gen2 PHY init	2020-09-17 13:47:55 +02:00
pinctrl	pinctrl: ingenic: Properly detect GPIO direction when configured for IRQ	2020-08-21 13:05:29 +02:00
platform	platform/chrome: cros_ec_ishtp: Fix a double-unlock issue	2020-08-21 13:05:30 +02:00
pnp	…
power	power: supply: check if calc_soc succeeded in pm860x_init_battery	2020-08-19 08:16:16 +02:00
powercap	…
pps	…
ps3	…
ptp	…
pwm	pwm: bcm-iproc: handle clk_get_rate() return	2020-08-21 13:05:34 +02:00
rapidio	rapidio: Replace 'select' DMAENGINES 'with depends on'	2020-09-23 12:40:36 +02:00
ras	…
regulator	regulator: pwm: Fix machine constraints application	2020-09-23 12:40:35 +02:00
remoteproc	remoteproc: qcom_q6v5_mss: Validate modem blob firmware size before load	2020-08-21 13:05:29 +02:00
reset	reset: uniphier: Add SCSSI reset control for each channel	2020-02-24 08:36:41 +01:00
rpmsg	…
rtc	rtc: goldfish: Enable interrupt in set_alarm() when necessary	2020-08-26 10:40:54 +02:00
s390	s390/zcrypt: fix kmalloc 256k failure	2020-09-23 12:40:46 +02:00
sbus	…
scsi	scsi: libsas: Fix error path in sas_notify_lldd_dev_found()	2020-09-23 12:40:40 +02:00
sfi	…
sh	…
siox	…
slimbus	slimbus: core: Fix mismatch in of_node_get/put	2020-07-22 09:33:08 +02:00
soc	soc: qcom: rpmh-rsc: Set suppress_bind_attrs flag	2020-08-19 08:15:59 +02:00
soundwire	soundwire: fix double free of dangling pointer	2020-09-17 13:47:43 +02:00
spi	spi: Fix memory leak on splited transfers	2020-09-23 12:40:38 +02:00
spmi	spmi: pmic-arb: Set lockdep class for hierarchical irq domains	2020-02-19 19:53:07 +01:00
ssb	…
staging	staging: greybus: audio: fix uninitialized value issue	2020-09-17 13:47:55 +02:00
target	scsi: target: iscsi: Fix hang in iscsit_access_np() when getting tpg->np_login_sem	2020-09-17 13:47:53 +02:00
tc	…
tee	tee: optee: Fix compilation issue with nommu	2020-02-05 21:22:49 +00:00
thermal	thermal: qcom-spmi-temp-alarm: Don't suppress negative temp	2020-09-09 19:12:29 +02:00
thunderbolt	thunderbolt: Prevent crash if non-active NVMem file is read	2020-02-28 17:22:13 +01:00
tty	serial: 8250_pci: Add Realtek 816a and 816b	2020-09-23 12:40:45 +02:00
uio	uio_pdrv_genirq: fix use without device tree and no interrupt	2020-07-22 09:33:13 +02:00
usb	ehci-hcd: Move include to keep CRC stable	2020-09-23 12:40:46 +02:00
vfio	vfio/pci: Fix SR-IOV VF handling with MMIO blocking	2020-09-09 19:12:36 +02:00
vhost	vhost/scsi: fix up req type endian-ness	2020-08-05 09:59:42 +02:00
video	fbcon: Fix user font detection test at fbcon_resize().	2020-09-23 12:40:41 +02:00
virt	virt: vbox: Fix guest capabilities mask check	2020-07-22 09:33:11 +02:00
virtio	virtio_ring: Avoid loop when vq is broken in virtqueue_poll	2020-08-26 10:40:57 +02:00
visorbus	visorbus: fix uninitialized variable access	2020-02-24 08:36:47 +01:00
vlynq	…
vme	vme: bridges: reduce stack usage	2020-02-24 08:36:48 +01:00
w1	w1: omap-hdq: cleanup to add missing newline for some dev_dbg	2020-06-22 09:31:26 +02:00
watchdog	watchdog: initialize device before misc_register	2020-08-21 13:05:36 +02:00
xen	xen/xenbus: Fix granting of vmalloc'd memory	2020-09-09 19:12:22 +02:00
zorro	…
Kconfig	…
Makefile	…