Pawan Gupta 66d5260fc7 x86/rfds: Mitigate Register File Data Sampling (RFDS) ... commit 8076fcde016c9c0e0660543e67bff86cb48a7c9c upstream. RFDS is a CPU vulnerability that may allow userspace to infer kernel stale data previously used in floating point registers, vector registers and integer registers. RFDS only affects certain Intel Atom processors. Intel released a microcode update that uses VERW instruction to clear the affected CPU buffers. Unlike MDS, none of the affected cores support SMT. Add RFDS bug infrastructure and enable the VERW based mitigation by default, that clears the affected buffers just before exiting to userspace. Also add sysfs reporting and cmdline parameter "reg_file_data_sampling" to control the mitigation. For details see: Documentation/admin-guide/hw-vuln/reg-file-data-sampling.rst [ pawan: - Resolved conflicts in sysfs reporting. - s/ATOM_GRACEMONT/ALDERLAKE_N/ATOM_GRACEMONT is called ALDERLAKE_N in 6.6. ] Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-04-13 12:58:59 +02:00
..
accessibility	speakup: Fix 8bit characters from direct synth	2024-04-13 12:58:30 +02:00
acpi	ACPI: scan: Fix device check notification handling	2024-03-26 18:21:51 -04:00
amba	amba: bus: fix refcount leak	2023-09-19 12:20:19 +02:00
android	binder: signal epoll threads of self-work	2024-02-23 08:42:26 +01:00
ata	ahci: asm1064: asm1166: don't limit reported ports	2024-04-13 12:58:43 +02:00
atm	atm: idt77252: fix a memleak in open_card_ubr0	2024-02-23 08:42:19 +01:00
auxdisplay
base	x86/rfds: Mitigate Register File Data Sampling (RFDS)	2024-04-13 12:58:59 +02:00
bcma
block	aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts	2024-03-26 18:21:48 -04:00
bluetooth	Bluetooth: qca: Set both WIDEBAND_SPEECH and LE_STATES quirks for QCA2066	2024-02-23 08:42:10 +01:00
bus	bus: tegra-aconnect: Update dependency to ARCH_TEGRA	2024-03-26 18:21:50 -04:00
cdrom
char	hwrng: core - Fix page fault dead lock on mmap-ed hwrng	2024-02-23 08:41:52 +01:00
clk	clk: qcom: mmcc-msm8974: fix terminating of frequency table arrays	2024-04-13 12:58:15 +02:00
clocksource	clocksource/drivers/timer-atmel-tcb: Fix initialization on SAM9 hardware	2023-11-28 16:54:49 +00:00
connector
counter	counter: microchip-tcb-capture: Fix the use of internal GCLK logic	2023-10-25 11:54:16 +02:00
cpufreq	cpufreq: brcmstb-avs-cpufreq: fix up "add check for cpufreq_cpu_get's return value"	2024-04-13 12:58:47 +02:00
cpuidle	powerpc/pseries: Rework lppaca_shared_proc() to avoid DEBUG_PREEMPT	2023-09-19 12:20:15 +02:00
crypto	crypto: qat - resolve race condition during AER recovery	2024-04-13 12:58:05 +02:00
dax	dax: Introduce alloc_dev_dax_id()	2023-07-27 08:44:00 +02:00
dca
devfreq	PM / devfreq: Synchronize devfreq_monitor_[start/stop]	2024-02-23 08:42:03 +01:00
dio
dma	dmaengine: tegra210-adma: Update dependency to ARCH_TEGRA	2024-03-26 18:21:55 -04:00
dma-buf	dma-buf/sw_sync: Avoid recursive lock during fence signal	2023-08-30 16:23:19 +02:00
edac	EDAC/thunderx: Fix possible out-of-bounds string access	2024-01-25 14:37:39 -08:00
eisa
extcon	extcon: Fix kernel doc of property capability fields to avoid warnings	2023-07-27 08:44:04 +02:00
firewire	firewire: core: use long bus reset on gap count error	2024-03-26 18:21:47 -04:00
firmware	efi/capsule-loader: fix incorrect allocation size	2024-03-06 14:37:49 +00:00
fpga
fsi	fsi: aspeed: Reset master errors after CFAM reset	2023-09-19 12:20:18 +02:00
gnss
gpio	gpio: fix resource unwinding order in error path	2024-03-06 14:37:50 +00:00
gpu	drm/amd/display: Fix noise issue on HDMI AV mute	2024-04-13 12:58:43 +02:00
greybus
hid	HID: lenovo: Add middleclick_workaround sysfs knob for cptkbd	2024-03-26 18:21:55 -04:00
hsi
hv	Drivers: hv: vmbus: Drop error message when 'No request id available'	2024-03-15 10:48:22 -04:00
hwmon	hwmon: (amc6821) add of_match table	2024-04-13 12:58:27 +02:00
hwspinlock
hwtracing	coresight: etm4x: Fix width of CCITMIN field	2024-01-25 14:37:39 -08:00
i2c	i2c: i801: Fix block process call transactions	2024-02-23 08:42:25 +01:00
i3c	i3c: master: cdns: Update maximum prescaler value for i2c clock	2024-02-23 08:42:13 +01:00
ide
idle
iio	iio: accel: bma400: Fix a compilation problem	2024-02-23 08:42:27 +01:00
infiniband	RDMA/device: Fix a race between mad_client and cm_client init	2024-03-26 18:22:01 -04:00
input	Input: gpio_keys_polled - suppress deferred probe error for gpio	2024-03-26 18:21:47 -04:00
interconnect	interconnect: Treat xlate() returning NULL node as an error	2024-01-05 15:12:26 +01:00
iommu	iommu/vt-d: Don't issue ATS Invalidation request when device is disconnected	2024-03-26 18:21:52 -04:00
ipack
irqchip	irqchip/mips-gic: Don't touch vl_map if a local interrupt is not routable	2024-03-01 13:16:45 +01:00
isdn	mISDN: Update parameter type of dsp_cmx_send()	2023-08-16 18:21:01 +02:00
leds	leds: sgm3140: Add missing timer cleanup and flash gpio control	2024-03-26 18:22:00 -04:00
lightnvm
macintosh	macintosh: via-pmu-led: requires ATA to be set	2023-05-17 11:48:00 +02:00
mailbox	mailbox: ti-msgmgr: Fill non-message tx data fields with 0x0	2023-07-27 08:44:08 +02:00
mcb	mcb: fix error handling for different scenarios when parsing	2023-11-28 16:54:58 +00:00
md	dm snapshot: fix lockup in dm_exception_table_exit	2024-04-13 12:58:44 +02:00
media	media: xc4000: Fix atomicity violation in xc4000_get_frequency	2024-04-13 12:58:03 +02:00
memory	memory: brcmstb_dpfe: fix testing array offset after use	2023-07-27 08:43:48 +02:00
memstick	memstick r592: make memstick_debug_get_tpc_name() static	2023-07-27 08:43:40 +02:00
message	scsi: message: mptlan: Fix use after free bug in mptlan_remove() due to race condition	2023-05-30 12:57:49 +01:00
mfd	mfd: altera-sysmgr: Call of_node_put() only when of_parse_phandle() takes a ref	2024-03-26 18:21:58 -04:00
misc	mei: me: add arrow lake point H DID	2024-04-13 12:58:52 +02:00
mmc	mmc: core: Fix switch on gp3 partition	2024-04-13 12:58:26 +02:00
most
mtd	mtd: rawnand: meson: fix scrambling mode value in command macro	2024-04-13 12:58:10 +02:00
mux
net	vxge: remove unnecessary cast in kfree()	2024-04-13 12:58:44 +02:00
nfc	nfcsim.c: Fix error checking for debugfs_create_dir	2023-06-28 10:28:14 +02:00
ntb	ntb: Fix calculation ntb_transport_tx_free_entry()	2023-09-19 12:20:22 +02:00
nubus	nubus: Partially revert proc_create_single_data() conversion	2023-07-27 08:43:31 +02:00
nvdimm	nd_btt: Make BTT lanes preemptible	2023-11-20 11:06:50 +01:00
nvme	nvmet-fc: abort command when there is no binding	2024-03-01 13:16:45 +01:00
nvmem	nvmem: meson-efuse: fix function pointer type mismatch	2024-04-13 12:58:28 +02:00
of	of: property: fix typo in io-channels	2024-02-23 08:42:29 +01:00
opp	OPP: debugfs: Fix warning around icc_get_name()	2024-03-26 18:21:53 -04:00
oprofile
parisc	parisc: iosapic.c: Fix sparse warnings	2023-10-10 21:53:32 +02:00
parport	parport: parport_serial: Add Brainboxes device IDs and geometry	2024-01-25 14:37:39 -08:00
pci	PCI: dwc: endpoint: Fix advertised resizable BAR size	2024-04-13 12:58:32 +02:00
pcmcia	pcmcia: ds: fix possible name leak in error path in pcmcia_device_add()	2023-11-20 11:06:54 +01:00
perf	perf/arm-cmn: Fix the unhandled overflow status of counter 4 to 7	2023-10-25 11:54:13 +02:00
phy	phy: tegra: xusb: Add API to retrieve the port number of phy	2024-04-13 12:58:29 +02:00
pinctrl	pinctrl: mediatek: Drop bogus slew rate register range for MT8192	2024-03-26 18:21:56 -04:00
platform	platform/x86: touchscreen_dmi: Allow partial (prefix) matches for ACPI names	2024-03-06 14:37:48 +00:00
pnp	PNP: ACPI: fix fortify warning	2024-02-23 08:42:03 +01:00
power	power: supply: bq27xxx-i2c: Do not free non existing IRQ	2024-03-06 14:37:49 +00:00
powercap	powercap: RAPL: Fix CONFIG_IOSF_MBI dependency	2023-07-27 08:43:34 +02:00
pps
ps3
ptp	ptp: annotate data-race around q->head and q->tail	2023-11-28 16:54:54 +00:00
pwm	pwm: jz4740: Don't use dev_err_probe() in .request()	2024-01-25 14:37:52 -08:00
rapidio
ras
regulator	regulator: pwm-regulator: Add validity checks in continuous .get_voltage	2024-03-01 13:16:44 +01:00
remoteproc	remoteproc: stm32: fix phys_addr_t format string	2024-03-26 18:22:04 -04:00
reset	reset: hisilicon: hi6220: fix Wvoid-pointer-to-enum-cast warning	2024-01-25 14:37:37 -08:00
rpmsg	rpmsg: virtio: Free driver_override when rpmsg_remove()	2024-02-23 08:41:53 +01:00
rtc	rtc: mt6397: select IRQ_DOMAIN instead of depending on it	2024-03-26 18:22:02 -04:00
s390	s390/zcrypt: fix reference counting on zcrypt card objects	2024-04-13 12:58:36 +02:00
sbus
scsi	block: introduce zone_write_granularity limit	2024-04-13 12:58:07 +02:00
sfi
sh
siox
slimbus	slimbus: core: Remove usage of the deprecated ida_simple_xx() API	2024-04-13 12:58:29 +02:00
soc	soc: fsl: qbman: Use raw spinlock for cgr_lock	2024-04-13 12:58:36 +02:00
soundwire	soundwire: stream: fix NULL pointer dereference for multi_link	2023-12-20 15:44:36 +01:00
spi	spi: spi-mt65xx: Fix NULL pointer access in interrupt handler	2024-03-26 18:22:04 -04:00
spmi	spmi: Add a check for remove callback when removing a SPMI driver	2023-05-17 11:47:59 +02:00
ssb
staging	comedi: comedi_test: Prevent timers rescheduling during deletion	2024-04-13 12:58:46 +02:00
target	scsi: target: core: Add TMF to tmr_list handling	2024-03-01 13:16:43 +01:00
tc
tee	tee: optee: Fix kernel panic caused by incorrect error handling	2024-04-13 12:58:53 +02:00
thermal	thermal: core: prevent potential string overflow	2023-11-20 11:06:45 +01:00
thunderbolt	thunderbolt: Workaround an IOMMU fault on certain systems with Intel Maple Ridge	2023-10-25 11:54:20 +02:00
tty	vt: fix unicode buffer corruption when deleting characters	2024-04-13 12:58:52 +02:00
uio	uio: Fix use-after-free in uio_open	2024-01-25 14:37:38 -08:00
usb	usb: port: Don't try to peer unused USB ports based on location	2024-04-13 12:58:51 +02:00
vdpa
vfio	vfio/platform: Disable virqfds on cleanup	2024-04-13 12:58:32 +02:00
vhost	vhost: use kzalloc() instead of kmalloc() followed by memset()	2024-02-23 08:42:22 +01:00
video	backlight: lp8788: Fully initialize backlight_properties during probe	2024-03-26 18:22:00 -04:00
virt
virtio	virtio-mmio: fix memory leak of vm_dev	2023-11-08 17:30:40 +01:00
visorbus
vlynq
vme
w1	w1: fix loop in w1_fini()	2023-07-27 08:44:02 +02:00
watchdog	watchdog: stm32_iwdg: initialize default timeout	2024-03-26 18:22:01 -04:00
xen	xen/events: close evtchn after mapping cleanup	2024-04-13 12:58:54 +02:00
zorro
Kconfig
Makefile