Pawan Gupta 2fb08b672e 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>		2024-04-10 16:18:48 +02:00
..
accessibility	speakup: Fix 8bit characters from direct synth	2024-04-10 16:18:40 +02:00
acpi	ACPI: CPPC: Use access_width over bit_width for system memory accesses	2024-04-10 16:18:46 +02:00
amba	…
android	…
ata	ahci: asm1064: asm1166: don't limit reported ports	2024-04-10 16:18:43 +02:00
atm	…
auxdisplay	…
base	x86/rfds: Mitigate Register File Data Sampling (RFDS)	2024-04-10 16:18:48 +02:00
bcma	…
block	aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts	2024-03-26 18:21:15 -04:00
bluetooth	Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()	2024-03-26 18:21:22 -04:00
bus	bus: tegra-aconnect: Update dependency to ARCH_TEGRA	2024-03-26 18:21:19 -04:00
cdrom	…
char	…
clk	clk: qcom: mmcc-msm8974: fix terminating of frequency table arrays	2024-04-10 16:18:37 +02:00
clocksource	clocksource/drivers/arm_global_timer: Fix maximum prescaler value	2024-04-10 16:18:46 +02:00
comedi	comedi: comedi_test: Prevent timers rescheduling during deletion	2024-03-26 18:21:34 -04:00
connector	…
counter	…
cpufreq	cpufreq: brcmstb-avs-cpufreq: fix up "add check for cpufreq_cpu_get's return value"	2024-04-10 16:18:44 +02:00
cpuidle	…
crypto	crypto: qat - resolve race condition during AER recovery	2024-04-10 16:18:35 +02:00
cxl	…
dax	…
dca	…
devfreq	…
dio	…
dma	dmaengine: tegra210-adma: Update dependency to ARCH_TEGRA	2024-03-26 18:21:25 -04:00
dma-buf	…
edac	…
eisa	…
extcon	…
firewire	firewire: core: use long bus reset on gap count error	2024-03-26 18:21:13 -04:00
firmware	…
fpga	…
fsi	…
gnss	…
gpio	gpio: fix resource unwinding order in error path	2024-03-06 14:38:50 +00:00
gpu	drm/i915: Check before removing mm notifier	2024-04-10 16:18:45 +02:00
greybus	…
hid	HID: amd_sfh: Update HPD sensor structure elements	2024-03-26 18:21:30 -04:00
hsi	…
hv	…
hwmon	hwmon: (amc6821) add of_match table	2024-04-10 16:18:40 +02:00
hwspinlock	…
hwtracing	…
i2c	i2c: i801: Avoid potential double call to gpiod_remove_lookup_table	2024-04-10 16:18:46 +02:00
i3c	…
idle	…
iio	…
infiniband	RDMA/rtrs-clt: Check strnlen return len in sysfs mpath_policy_store()	2024-03-26 18:21:33 -04:00
input	Input: gpio_keys_polled - suppress deferred probe error for gpio	2024-03-26 18:21:13 -04:00
interconnect	Revert "interconnect: Teach lockdep about icc_bw_lock order"	2024-03-06 14:38:50 +00:00
iommu	iommu/dma: Force swiotlb_max_mapping_size on an untrusted device	2024-04-10 16:18:47 +02:00
ipack	…
irqchip	…
isdn	…
leds	leds: sgm3140: Add missing timer cleanup and flash gpio control	2024-03-26 18:21:31 -04:00
macintosh	…
mailbox	…
mcb	…
md	dm snapshot: fix lockup in dm_exception_table_exit	2024-04-10 16:18:44 +02:00
media	media: xc4000: Fix atomicity violation in xc4000_get_frequency	2024-04-10 16:18:34 +02:00
memory	…
memstick	…
message	…
mfd	mfd: altera-sysmgr: Call of_node_put() only when of_parse_phandle() takes a ref	2024-03-26 18:21:29 -04:00
misc	mei: me: add arrow lake point H DID	2024-04-10 16:18:46 +02:00
mmc	mmc: core: Fix switch on gp3 partition	2024-04-10 16:18:39 +02:00
most	…
mtd	mtd: rawnand: meson: fix scrambling mode value in command macro	2024-04-10 16:18:36 +02:00
mux	…
net	net: ravb: Add R-Car Gen4 support	2024-04-10 16:18:44 +02:00
nfc	…
ntb	NTB: fix possible name leak in ntb_register_device()	2024-03-26 18:21:28 -04:00
nubus	…
nvdimm	…
nvme	…
nvmem	nvmem: meson-efuse: fix function pointer type mismatch	2024-04-10 16:18:40 +02:00
of	…
opp	OPP: debugfs: Fix warning around icc_get_name()	2024-03-26 18:21:23 -04:00
parisc	…
parport	…
pci	PCI: dwc: endpoint: Fix advertised resizable BAR size	2024-04-10 16:18:41 +02:00
pcmcia	…
perf	…
phy	phy: tegra: xusb: Add API to retrieve the port number of phy	2024-04-10 16:18:40 +02:00
pinctrl	pinctrl: mediatek: Drop bogus slew rate register range for MT8192	2024-03-26 18:21:26 -04:00
platform	…
pnp	…
power	…
powercap	…
pps	…
ps3	…
ptp	…
pwm	pwm: sti: Fix capture for st,pwm-num-chan < st,capture-num-chan	2024-03-26 18:21:18 -04:00
rapidio	…
ras	…
regulator	…
remoteproc	remoteproc: stm32: fix incorrect optional pointers	2024-03-26 18:21:37 -04:00
reset	…
rpmsg	…
rtc	rtc: mt6397: select IRQ_DOMAIN instead of depending on it	2024-03-26 18:21:34 -04:00
s390	s390/zcrypt: fix reference counting on zcrypt card objects	2024-04-10 16:18:42 +02:00
sbus	…
scsi	scsi: bfa: Fix function pointer type mismatch for hcb_qe->cbfn	2024-03-26 18:21:33 -04:00
sh	…
siox	…
slimbus	slimbus: core: Remove usage of the deprecated ida_simple_xx() API	2024-04-10 16:18:40 +02:00
soc	soc: fsl: qbman: Use raw spinlock for cgr_lock	2024-04-10 16:18:42 +02:00
soundwire	…
spi	spi: spi-mt65xx: Fix NULL pointer access in interrupt handler	2024-03-26 18:21:37 -04:00
spmi	…
ssb	…
staging	media: staging: ipu3-imgu: Set fields before media_entity_pads_init()	2024-04-10 16:18:33 +02:00
target	…
tc	…
tee	tee: optee: Fix kernel panic caused by incorrect error handling	2024-04-10 16:18:46 +02:00
thermal	…
thunderbolt	…
tty	tty: serial: imx: Fix broken RS485	2024-04-10 16:18:47 +02:00
uio	…
usb	usb: port: Don't try to peer unused USB ports based on location	2024-04-10 16:18:45 +02:00
vdpa	vdpa/mlx5: Allow CVQ size changes	2024-03-26 18:21:36 -04:00
vfio	vfio/platform: Disable virqfds on cleanup	2024-04-10 16:18:41 +02:00
vhost	…
video	backlight: lp8788: Fully initialize backlight_properties during probe	2024-03-26 18:21:31 -04:00
virt	…
virtio	…
visorbus	…
vlynq	…
vme	…
w1	…
watchdog	watchdog: stm32_iwdg: initialize default timeout	2024-03-26 18:21:33 -04:00
xen	xen/events: close evtchn after mapping cleanup	2024-04-10 16:18:46 +02:00
zorro	…
Kconfig	…
Makefile	…