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linux/drivers
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Vineela Tummalapalli f9aa6b73a4 x86/bugs: Add ITLB_MULTIHIT bug infrastructure 
commit db4d30fbb7 upstream.

Some processors may incur a machine check error possibly resulting in an
unrecoverable CPU lockup when an instruction fetch encounters a TLB
multi-hit in the instruction TLB. This can occur when the page size is
changed along with either the physical address or cache type. The relevant
erratum can be found here:

   https://bugzilla.kernel.org/show_bug.cgi?id=205195

There are other processors affected for which the erratum does not fully
disclose the impact.

This issue affects both bare-metal x86 page tables and EPT.

It can be mitigated by either eliminating the use of large pages or by
using careful TLB invalidations when changing the page size in the page
tables.

Just like Spectre, Meltdown, L1TF and MDS, a new bit has been allocated in
MSR_IA32_ARCH_CAPABILITIES (PSCHANGE_MC_NO) and will be set on CPUs which
are mitigated against this issue.

Signed-off-by: Vineela Tummalapalli <vineela.tummalapalli@intel.com>
Co-developed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-12 19:21:36 +01:00
..
accessibility
acpi ACPI: CPPC: Set pcc_data[pcc_ss_id] to NULL in acpi_cppc_processor_exit() 2019-10-29 09:19:52 +01:00
amba
android binder: fix possible UAF when freeing buffer 2019-08-04 09:30:53 +02:00
ata libata/ahci: Fix PCS quirk application 2019-10-29 09:19:36 +01:00
atm Kconfig: Fix the reference to the IDT77105 Phy driver in the description of ATM_NICSTAR_USE_IDT77105 2019-09-21 07:16:57 +02:00
auxdisplay auxdisplay: panel: need to delete scan_timer when misc_register fails in panel_attach 2019-09-06 10:21:56 +02:00
base x86/bugs: Add ITLB_MULTIHIT bug infrastructure 2019-11-12 19:21:36 +01:00
bcma
block nbd: handle racing with error'ed out commands 2019-11-10 11:27:35 +01:00
bluetooth Bluetooth: btrtl: Additional Realtek 8822CE Bluetooth devices 2019-10-01 08:26:12 +02:00
bus bus: ti-sysc: Simplify cleanup upon failures in sysc_probe() 2019-09-21 07:16:51 +02:00
cdrom cdrom: Fix race condition in cdrom_sysctl_register 2019-04-05 22:33:10 +02:00
char ipmi_si: Only schedule continuously in the thread in maintenance mode 2019-10-07 18:56:39 +02:00
clk clk: boston: unregister clks on failure in clk_boston_setup() 2019-11-06 13:05:26 +01:00
clocksource clocksource/drivers/exynos_mct: Increase priority over ARM arch timer 2019-07-26 09:14:12 +02:00
connector connector: fix unsafe usage of ->real_parent 2019-03-19 13:12:38 +01:00
cpufreq cpufreq: Avoid cpufreq_suspend() deadlock on system shutdown 2019-10-29 09:20:08 +01:00
cpuidle cpuidle: big.LITTLE: fix refcount leak 2019-02-12 19:47:08 +01:00
crypto net: use skb_queue_empty_lockless() in busy poll contexts 2019-11-10 11:27:49 +01:00
dax mm/huge_memory: fix vmf_insert_pfn_{pmd, pud}() crash, handle unaligned addresses 2019-05-22 07:37:40 +02:00
dca
devfreq PM / devfreq: tegra: Fix kHz to Hz conversion 2019-10-11 18:20:46 +02:00
dio
dma dmaengine: sprd: Fix the possible memory leak issue 2019-11-12 19:20:54 +01:00
dma-buf dma-buf/sw_sync: Synchronize signal vs syncpt free 2019-10-07 18:57:04 +02:00
edac EDAC/ghes: Fix Use after free in ghes_edac remove path 2019-10-29 09:20:01 +01:00
eisa
extcon extcon: arizona: Disable mic detect if running when driver is removed 2019-05-31 06:46:23 -07:00
firewire
firmware efi/cper: Fix endianness of PCIe class code 2019-11-06 13:05:52 +01:00
fmc
fpga fpga: altera-ps-spi: Fix getting of optional confd gpio 2019-09-21 07:16:53 +02:00
fsi fsi: scom: Don't abort operations for minor errors 2019-09-06 10:22:19 +02:00
gnss gnss: sirf: fix premature wakeup interrupt enable 2019-03-10 07:17:21 +01:00
gpio gpio: max77620: Use correct unit for debounce times 2019-11-06 13:05:50 +01:00
gpu drm/i915/cmdparser: Fix jump whitelist clearing 2019-11-12 19:21:29 +01:00
hid HID: intel-ish-hid: fix wrong error handling in ishtp_cl_alloc_tx_ring() 2019-11-12 19:20:54 +01:00
hsi
hv Drivers: hv: kvp: Fix the recent regression caused by incorrect clean-up 2019-09-16 08:21:54 +02:00
hwmon hwmon: (acpi_power_meter) Change log level for 'unsafe software power cap' 2019-10-05 13:09:54 +02:00
hwspinlock
hwtracing intel_th: pci: Add Jasper Lake PCH support 2019-11-12 19:20:42 +01:00
i2c i2c: stm32f7: remove warning when compiling with W=1 2019-11-10 11:27:33 +01:00
ide ide: fix a typo in the settings proc file name 2019-01-31 08:14:42 +01:00
idle x86/cpu: Sanitize FAM6_ATOM naming 2019-05-14 19:17:53 +02:00
iio iio: imu: mpu6050: Fix FIFO layout for ICM20602 2019-11-12 19:21:22 +01:00
infiniband RDMA/hns: Prevent memory leaks of eq->buf_list 2019-11-12 19:21:10 +01:00
input Input: synaptics-rmi4 - avoid processing unknown IRQs 2019-10-29 09:19:51 +01:00
iommu iommu/amd: Apply the same IVRS IOAPIC workaround to Acer Aspire A315-41 2019-11-12 19:21:14 +01:00
ipack
irqchip irqchip/gic-v3-its: Use the exact ITSList for VMOVP 2019-11-10 11:27:31 +01:00
isdn net: use skb_queue_empty_lockless() in poll() handlers 2019-11-10 11:27:48 +01:00
leds led: triggers: Fix a memory leak bug 2019-10-05 13:09:45 +02:00
lightnvm lightnvm: pblk: fix freeing of merged pages 2019-07-26 09:14:09 +02:00
macintosh
mailbox mbox: qcom: add APCS child device for QCS404 2019-10-07 18:57:02 +02:00
mcb
md bcache: fix input overflow to writeback_rate_minimum 2019-11-06 13:05:20 +01:00
media media: vimc: Remove unused but set variables 2019-11-06 13:05:37 +01:00
memory memory: tegra: Fix integer overflow on tick value calculation 2019-05-25 18:23:32 +02:00
memstick memstick: jmb38x_ms: Fix an error handling path in 'jmb38x_ms_probe()' 2019-10-29 09:20:07 +01:00
message
mfd mfd: intel-lpss: Remove D3cold delay 2019-10-07 18:57:08 +02:00
misc mei: avoid FW version request on Ibex Peak and earlier 2019-10-17 13:45:10 -07:00
mmc mmc: cqhci: Commit descriptors before setting the doorbell 2019-10-29 09:19:57 +01:00
mtd mtd: cfi_cmdset_0002: Use chip_good() to retry in do_write_oneword() 2019-10-01 08:26:02 +02:00
mux
net e1000: fix memory leaks 2019-11-12 19:21:18 +01:00
nfc NFC: st21nfca: fix double free 2019-11-12 19:20:30 +01:00
ntb ntb: point to right memory window index 2019-10-11 18:21:18 +02:00
nubus
nvdimm libnvdimm/region: Initialize bad block for volatile namespaces 2019-10-11 18:21:20 +02:00
nvme nvme-multipath: fix possible io hang after ctrl reconnect 2019-11-12 19:21:11 +01:00
nvmem nvmem: Use the same permissions for eeprom as for nvmem 2019-09-19 09:09:41 +02:00
of of: unittest: fix memory leak in unittest_data_add 2019-11-10 11:27:30 +01:00
opp OPP: Use opp_table->regulators to verify no regulator case 2019-02-12 19:47:08 +01:00
oprofile
parisc parisc: Disable HP HSC-PCI Cards to prevent kernel crash 2019-10-05 13:10:04 +02:00
parport parport: Fix mem leak in parport_register_dev_model 2019-06-25 11:35:55 +08:00
pci PCI: tegra: Enable Relaxed Ordering only for Tegra20 & Tegra30 2019-11-12 19:20:52 +01:00
pcmcia pcmcia: Implement CLKRUN protocol disabling for Ricoh bridges 2018-11-13 11:08:17 -08:00
perf drivers/perf: arm_pmu: Fix failure path in PM notifier 2019-08-06 19:06:55 +02:00
phy phy: renesas: rcar-gen3-usb2: Disable clearing VBUS in over-current 2019-09-21 07:16:42 +02:00
pinctrl pinctrl: cherryview: Fix irq_valid_mask calculation 2019-11-12 19:21:19 +01:00
platform platform/x86: pmc_atom: Add Siemens SIMATIC IPC227E to critclk_systems DMI table 2019-11-10 11:27:55 +01:00
pnp
power power: supply: max14656: fix potential use-after-free 2019-11-06 13:05:39 +01:00
powercap x86/cpu: Sanitize FAM6_ATOM naming 2019-05-14 19:17:53 +02:00
pps drivers/pps/pps.c: clear offset flags in PPS_SETPARAMS ioctl 2019-08-04 09:30:56 +02:00
ps3
ptp ptp: Fix pass zero to ERR_PTR() in ptp_clock_register 2019-02-12 19:47:01 +01:00
pwm pwm: stm32-lp: Add check in case requested period cannot be achieved 2019-10-11 18:21:17 +02:00
rapidio drivers/rapidio/devices/rio_mport_cdev.c: NUL terminate some strings 2019-08-06 19:06:52 +02:00
ras RAS/CEC: Fix pfn insertion 2019-07-26 09:14:05 +02:00
regulator regulator: pfuze100-regulator: Variable "val" in pfuze100_regulator_probe() could be uninitialized 2019-11-10 11:27:15 +01:00
remoteproc remoteproc: qcom: q6v5-mss: add SCM probe dependency 2019-09-16 08:21:48 +02:00
reset reset: meson-audio-arb: Fix missing .owner setting of reset_controller_dev 2019-05-08 07:21:47 +02:00
rpmsg rpmsg: smd: fix memory leak on channel create 2018-11-13 11:08:55 -08:00
rtc rtc: pcf8523: set xtal load capacitance from DT 2019-11-06 13:05:33 +01:00
s390 scsi: zfcp: fix reaction on bit error threshold notification 2019-10-29 09:19:48 +01:00
sbus drivers/sbus/char: add of_node_put() 2018-12-21 14:15:17 +01:00
scsi scsi: qla2xxx: stop timer in shutdown path 2019-11-12 19:21:10 +01:00
sfi
sh
siox
slimbus slimbus: fix a potential NULL pointer dereference in of_qcom_slim_ngd_register 2019-05-31 06:46:14 -07:00
sn
soc soc: bcm: brcmstb: biuctrl: Register writes require a barrier 2019-07-14 08:11:03 +02:00
soundwire soundwire: bus: set initial value to port_status 2019-11-12 19:20:38 +01:00
spi spi: spi-gpio: fix SPI_CS_HIGH capability 2019-09-16 08:22:07 +02:00
spmi
ssb ssb: Fix possible NULL pointer dereference in ssb_host_pcmcia_exit 2019-05-31 06:46:04 -07:00
staging staging: rtl8188eu: fix null dereference when kzalloc fails 2019-11-06 13:05:45 +01:00
target scsi: target: core: Do not overwrite CDB byte 1 2019-11-10 11:27:28 +01:00
tc TC: Set DMA masks for devices 2018-11-13 11:08:51 -08:00
tee tee: optee: avoid possible double list_del() 2019-02-12 19:47:08 +01:00
thermal thermal_hwmon: Sanitize thermal_zone type 2019-10-11 18:21:19 +02:00
thunderbolt thunderbolt: Use 32-bit writes when writing ring producer/consumer 2019-11-06 13:06:12 +01:00
tty 8250-men-mcb: fix error checking when get_num_ports returns -ENODEV 2019-11-10 11:27:25 +01:00
uio uio: Fix an Oops on load 2018-11-27 16:13:09 +01:00
usb usbip: Fix free of unallocated memory in vhci tx 2019-11-12 19:21:20 +01:00
uwb
vfio vfio_pci: Restore original state on release 2019-10-07 18:56:53 +02:00
vhost vhost: make sure log_num < in_num 2019-09-16 08:22:25 +02:00
video video: ssd1307fb: Start page range at page_offset 2019-10-07 18:56:30 +02:00
virt virt: vbox: fix memory leak in hgcm_call_preprocess_linaddr 2019-11-06 13:06:04 +01:00
virtio virtio_pci: fix a NULL pointer reference in vp_del_vqs 2019-05-10 17:54:08 +02:00
visorbus
vlynq
vme
w1 w1: fix the resume command API 2019-05-31 06:46:14 -07:00
watchdog watchdog: aspeed: Add support for AST2600 2019-10-11 18:21:15 +02:00
xen xen/pci: reserve MCFG areas earlier 2019-10-11 18:21:13 +02:00
zorro
Kconfig
Makefile