AuxXxilium/linux_dsm_epyc7002
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6c4088ac3a
linux_dsm_epyc7002/drivers
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Greg Pearson 6c4088ac3a pcdp: use early_ioremap/early_iounmap to access pcdp table 
efi_setup_pcdp_console() is called during boot to parse the HCDP/PCDP
EFI system table and setup an early console for printk output.  The
routine uses ioremap/iounmap to setup access to the HCDP/PCDP table
information.

The call to ioremap is happening early in the boot process which leads
to a panic on x86_64 systems:

    panic+0x01ca
    do_exit+0x043c
    oops_end+0x00a7
    no_context+0x0119
    __bad_area_nosemaphore+0x0138
    bad_area_nosemaphore+0x000e
    do_page_fault+0x0321
    page_fault+0x0020
    reserve_memtype+0x02a1
    __ioremap_caller+0x0123
    ioremap_nocache+0x0012
    efi_setup_pcdp_console+0x002b
    setup_arch+0x03a9
    start_kernel+0x00d4
    x86_64_start_reservations+0x012c
    x86_64_start_kernel+0x00fe

This replaces the calls to ioremap/iounmap in efi_setup_pcdp_console()
with calls to early_ioremap/early_iounmap which can be called during
early boot.

This patch was tested on an x86_64 prototype system which uses the
HCDP/PCDP table for early console setup.

Signed-off-by: Greg Pearson <greg.pearson@hp.com>
Acked-by: Khalid Aziz <khalid.aziz@hp.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-30 17:25:11 -07:00
..
accessibility
acpi Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2012-07-26 14:28:55 -07:00
amba Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-07-27 15:14:26 -07:00
ata [libata] pata_cmd64x: whitespace cleanup 2012-07-25 16:07:40 -04:00
atm
auxdisplay
base Driver core merge for 3.6-rc1 2012-07-26 11:25:33 -07:00
bcma Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem 2012-07-27 11:15:03 -04:00
block Power management updates for 3.6 2012-07-22 13:36:52 -07:00
bluetooth Bluetooth: Introduce a flags variable to Three-wire UART state 2012-07-17 14:49:24 -03:00
cdrom
char Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2012-07-26 14:18:18 -07:00
clk The common clk framework changes for 3.6 include a small number of core 2012-07-24 16:40:57 -07:00
clocksource arm-soc: new SoC support 2012-07-23 16:31:31 -07:00
connector drivers: connector: fixed coding style issues 2012-07-16 23:23:52 -07:00
cpufreq Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-07-24 13:34:56 -07:00
cpuidle Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2012-07-26 14:28:55 -07:00
crypto ARM: SoC fixes 2012-07-26 20:29:52 -07:00
dca
devfreq
dio
dma Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2012-07-24 17:12:54 -07:00
edac
eisa
extcon extcon: MAX77693: Add extcon-max77693 driver to support Maxim MAX77693 MUIC device 2012-07-17 10:34:56 -07:00
firewire
firmware pcdp: use early_ioremap/early_iounmap to access pcdp table 2012-07-30 17:25:11 -07:00
gpio GPIO changes for v3.6: 2012-07-26 13:56:38 -07:00
gpu Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2012-07-26 14:18:18 -07:00
hid Merge branch 'next' into for-linus 2012-07-24 22:43:04 -07:00
hsi
hv Drivers: hv: Change the hex constant to a decimal constant 2012-07-19 15:27:33 -07:00
hwmon Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-07-24 13:34:56 -07:00
hwspinlock
i2c Merge branch 'i2c-embedded/for-next' of git://git.pengutronix.de/git/wsa/linux 2012-07-28 13:43:12 -07:00
ide
idle Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2012-07-26 14:28:55 -07:00
ieee802154
iio iio: fix pointer cast warning 2012-07-15 17:33:17 +01:00
infiniband InfiniBand/RDMA changes for the 3.6 merge window: 2012-07-24 13:56:26 -07:00
input Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-07-27 15:14:26 -07:00
iommu IOMMU Updates for Linux v3.6-rc1 2012-07-24 16:24:11 -07:00
isdn ISDN: Add check for usb_alloc_urb() result 2012-07-18 09:40:54 -07:00
leds leds-lp8788: forgotten unlock at lp8788_led_work 2012-07-27 08:16:07 +08:00
lguest
macintosh
md Three fixes for device-mapper discard processing: 2012-07-20 11:51:22 -07:00
media Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-07-24 13:34:56 -07:00
memory
memstick
message
mfd Merge branch 'i2c-embedded/for-next' of git://git.pengutronix.de/git/wsa/linux 2012-07-28 13:43:12 -07:00
misc CHAR/MISC patches for 3.6-rc1 2012-07-26 12:15:41 -07:00
mmc ARM: SoC fixes 2012-07-26 20:29:52 -07:00
mtd Merge branch 'v3.5-rc7-fixes' of git://github.com/lunn/linux into fixes 2012-07-25 21:37:09 +02:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-07-28 06:00:39 -07:00
nfc
nubus
of Devicetree updates for 3.6 2012-07-24 14:07:22 -07:00
oprofile
parisc PCI changes for the 3.6 merge window: 2012-07-24 16:17:07 -07:00
parport
pci PCI changes for the 3.6 merge window: 2012-07-24 16:17:07 -07:00
pcmcia Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-07-27 15:14:26 -07:00
pinctrl Pin control changes for v3.6: 2012-07-24 14:05:46 -07:00
platform Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2012-07-26 14:28:55 -07:00
pnp
power Driver core merge for 3.6-rc1 2012-07-26 11:25:33 -07:00
pps
ps3
ptp
rapidio
regulator SCSI misc on 20120724 2012-07-24 18:11:22 -07:00
remoteproc A batch of remoteproc patches for 3.6: 2012-07-26 16:19:08 -07:00
rpmsg A batch of remoteproc patches for 3.6: 2012-07-26 16:19:08 -07:00
rtc Merge branch 'v3.5-rc7-fixes' of git://github.com/lunn/linux into fixes 2012-07-25 21:37:09 +02:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-07-26 18:09:01 -07:00
sbus
scsi Merge branch 'master' [vanilla Linus master] into libata-dev.git/upstream 2012-07-25 15:58:48 -04:00
sfi
sh Merge branch 'common/pinctrl' into sh-latest 2012-07-20 16:42:59 +09:00
sn
spi spi: Updates for 3.6 2012-07-26 12:57:41 -07:00
ssb
staging Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2012-07-26 14:18:18 -07:00
target iscsi-target: Drop bogus struct file usage for iSCSI/SCTP 2012-07-21 02:44:13 -07:00
tc
thermal Merge branches 'acpi_pad', 'acpica', 'apei-bugzilla-43282', 'battery', 'cpuidle-coupled', 'cpuidle-tweaks', 'intel_idle-ivb', 'ost', 'red-hat-bz-772730', 'thermal', 'thermal-spear' and 'turbostat-v2' into release 2012-07-26 00:03:58 -04:00
tty Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-07-27 15:14:26 -07:00
uio
usb ARM: SoC fixes 2012-07-26 20:29:52 -07:00
uwb
vhost vhost: make vhost work queue visible 2012-07-22 01:22:23 +03:00
video radeonfb: Add quirk for the graphics adapter in some JSxx 2012-07-27 11:42:33 +10:00
virt
virtio [SCSI] virtio-scsi: Add vdrv->scan for post VIRTIO_CONFIG_S_DRIVER_OK LUN scanning 2012-07-20 08:59:03 +01:00
vlynq
vme VME: Prevent D16 cycles being split into 8-bit blocks 2012-07-19 15:39:39 -07:00
w1 Driver core merge for 3.6-rc1 2012-07-26 11:25:33 -07:00
watchdog Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-07-27 15:14:26 -07:00
xen PCI changes for the 3.6 merge window: 2012-07-24 16:17:07 -07:00
zorro
Kconfig
Makefile