Michael Ellerman 9227f04314 powerpc/udbg: Reduce the footgun potential of EARLY_DEBUG_LPAR(_HVSI) ... For debugging very early boot problems we have CONFIG_PPC_EARLY_DEBUG, which allows configuring the kernel such that it unconditionally writes to a particular type of console, regardless of whether that console exists or not. This is useful sometimes when the kernel crashes before it can even determine what platform it's on, and therefore what consoles exist. However if you boot a kernel built this way on a different platform, it will generally crash because it writes to a console that doesn't exist. A particularly nasty instance of this is if you enable the hypervisor console early debug, and then boot that kernel on bare metal. The result is that the kernel calls "the hypervisor" very early in boot, but the kernel *is* the hypervisor, so we jump to the system call handler and start executing all sorts of code that isn't ready to be run. This may lead to a machine check or check stop depending on how lucky you are. Luckily there is an easy way to avoid this particular case. We simply read the MSR before installing the hooks, and if we see MSR_HV is set then we are the hypervisor and we definitely should not use the hypervisor console. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2017-07-31 16:56:45 +10:00
..
accessibility	…
acpi	acpi/nfit: Fix memory corruption/Unregister mce decoder on failure	2017-07-17 11:43:58 -07:00
amba	…
android	binder: Use wake up hint for synchronous transactions.	2017-07-17 14:44:19 +02:00
ata	…
atm	atm: zatm: Fix an error handling path in 'zatm_init_one()'	2017-07-18 11:37:46 -07:00
auxdisplay	…
base	Power management fixes for v4.13-rc2	2017-07-20 14:56:46 -07:00
bcma	…
block	nbd: kill unused ret in recv_work	2017-07-13 08:03:30 -06:00
bluetooth	…
bus	main drm pull for v4.13	2017-07-09 18:48:37 -07:00
cdrom	…
char	Add wait_for_random_bytes() and get_random_*_wait() functions so that	2017-07-15 12:44:02 -07:00
clk	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2017-07-15 10:59:54 -07:00
clocksource	clocksource/drivers/timer-of: Handle of_irq_get_byname() result correctly	2017-07-17 22:43:00 +02:00
connector	…
cpufreq	Merge branches 'intel_pstate' and 'pm-domains'	2017-07-20 18:57:15 +02:00
cpuidle	powerpc updates for 4.13	2017-07-07 13:55:45 -07:00
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2017-07-14 22:49:50 -07:00
dax	device-dax: fix sysfs duplicate warnings	2017-07-18 17:49:14 -07:00
dca	…
devfreq	…
dio	…
dma	dmaengine updates for 4.13-rc1	2017-07-08 12:36:50 -07:00
dma-buf	Merge branch 'drm-misc-next-fixes' into drm-misc-fixes	2017-07-17 11:56:07 -04:00
edac	…
eisa	…
extcon	…
firewire	…
firmware	efi: avoid fortify checks in EFI stub	2017-07-12 16:26:02 -07:00
fmc	…
fpga	…
fsi	drivers/fsi: fix fsi_slave_mode prototype	2017-07-17 16:13:54 +02:00
gpio	Merge (most of) tag 'mfd-next-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd	2017-07-07 13:30:05 -07:00
gpu	imx-drm: fix parallel display regression and typo in plane format list	2017-07-21 14:04:44 +10:00
hid	HID: hid-logitech-hidpp: add NULL check on devm_kmemdup() return value	2017-07-20 15:45:39 +02:00
hsi	…
hv	vmbus: re-enable channel tasklet	2017-07-17 15:00:47 +02:00
hwmon	hwmon: (applesmc) Avoid buffer overruns	2017-07-15 16:38:56 -07:00
hwspinlock	…
hwtracing	…
i2c	Merge branch 'i2c/for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2017-07-12 10:04:56 -07:00
ide	ide: avoid warning for timings calculation	2017-07-21 04:37:22 +01:00
idle	…
iio	…
infiniband	RDMA/core: Initialize port_num in qp_attr	2017-07-20 11:24:13 -04:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2017-07-14 22:53:37 -07:00
iommu	IOMMU Updates for Linux v4.13	2017-07-12 10:00:04 -07:00
ipack	…
irqchip	irqchip/digicolor: Drop unnecessary static	2017-07-18 21:59:23 +02:00
isdn	isdn: avm: c4: constify pci_device_id.	2017-07-15 21:25:56 -07:00
leds	…
lguest	…
lightnvm	lightnvm: pblk: remove unnecessary checks	2017-07-07 13:17:36 -06:00
macintosh	…
mailbox	Merge branch 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu/integration	2017-07-07 10:24:07 -07:00
mcb	…
md	Merge tag 'md/4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md	2017-07-18 11:51:08 -07:00
media	main drm pull for v4.13	2017-07-09 18:48:37 -07:00
memory	…
memstick	…
message	…
mfd	chrome-platform-for-linus-4.13	2017-07-11 09:55:47 -07:00
misc	powerpc updates for 4.13	2017-07-07 13:55:45 -07:00
mmc	MMC core:	2017-07-14 13:10:06 -07:00
mtd	MTD updates for v4.13-rc1:	2017-07-13 12:07:44 -07:00
mux	mux: mux-core: unregister mux_class in mux_exit()	2017-07-17 16:38:35 +02:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-07-20 16:33:39 -07:00
nfc	…
ntb	…
nubus	…
nvdimm	libnvdimm: fix badblock range handling of ARS range	2017-07-17 11:43:58 -07:00
nvme	nvmet: don't report 0-bytes in serial number	2017-07-20 08:41:56 -06:00
nvmem	nvmem: rockchip-efuse: amend compatible rk322x-efuse to rk3228-efuse	2017-07-17 16:15:57 +02:00
of	Device properties framework updates for v4.13-rc1	2017-07-10 15:23:45 -07:00
oprofile	…
parisc	…
parport	…
pci	Power management fixes for v4.13-rc1	2017-07-14 22:24:25 -07:00
pcmcia	…
perf	…
phy	…
pinctrl	…
platform	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2017-07-15 10:59:54 -07:00
pnp	This is the bulk of GPIO changes for the v4.13 series:	2017-07-07 12:40:27 -07:00
power	power supply and reset changes for the v4.13 series (part 2)	2017-07-13 11:47:59 -07:00
powercap	…
pps	…
ps3	…
ptp	…
pwm	pwm: Changes for v4.13-rc1	2017-07-13 11:49:52 -07:00
rapidio	…
ras	…
regulator	…
remoteproc	…
reset	…
rpmsg	rpmsg updates for v4.13	2017-07-06 15:38:31 -07:00
rtc	RTC for 4.13	2017-07-13 12:15:06 -07:00
s390	drivers: s390: move static and inline before return type	2017-07-12 16:26:04 -07:00
sbus	…
scsi	SCSI fixes on 20170715	2017-07-17 12:26:12 -07:00
sfi	…
sh	drivers/sh/intc/virq.c: delete an error message for a failed memory allocation in add_virq_to_pirq()	2017-07-06 16:24:30 -07:00
sn	…
soc	…
spi	Merge branch 'for-spi' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-07-08 10:41:53 -07:00
spmi	spmi: pmic-arb: Always allocate ppid_to_apid table	2017-07-17 15:00:47 +02:00
ssb	…
staging	staging: rtl8188eu: add TL-WN722N v2 support	2017-07-18 09:04:22 +02:00
target	Add wait_for_random_bytes() and get_random_*_wait() functions so that	2017-07-15 12:44:02 -07:00
tc	…
tee	…
thermal	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2017-07-14 13:12:32 -07:00
thunderbolt	thunderbolt: Correct access permissions for active NVM contents	2017-07-17 15:55:08 +02:00
tty	powerpc/udbg: Reduce the footgun potential of EARLY_DEBUG_LPAR(_HVSI)	2017-07-31 16:56:45 +10:00
uio	…
usb	xhci: fix memleak in xhci_run()	2017-07-20 14:40:36 +02:00
uwb	…
vfio	VFIO updates for v4.13-rc1	2017-07-13 12:23:54 -07:00
vhost	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2017-07-13 14:27:32 -07:00
video	Merge branch 'akpm' (patches from Andrew)	2017-07-13 12:38:49 -07:00
virt	…
virtio	…
vlynq	…
vme	…
w1	w1: omap-hdq: fix error return code in omap_hdq_probe()	2017-07-17 16:48:15 +02:00
watchdog	Merge git://www.linux-watchdog.org/linux-watchdog	2017-07-11 09:59:37 -07:00
xen	xen/balloon: don't online new memory initially	2017-07-23 08:13:18 +02:00
zorro	…
Kconfig	…
Makefile	…