linux_dsm_epyc7002/drivers/char
jmlatten@linux.vnet.ibm.com 6da2517ddb tpm/ibmvtpm: Additional LE support for tpm_ibmvtpm_send
Problem: When IMA and VTPM are both enabled in kernel config,
kernel hangs during bootup on LE OS.

Why?: IMA calls tpm_pcr_read() which results in tpm_ibmvtpm_send
and tpm_ibmtpm_recv getting called. A trace showed that
tpm_ibmtpm_recv was hanging.

Resolution: tpm_ibmtpm_recv was hanging because tpm_ibmvtpm_send
was sending CRQ message that probably did not make much sense
to phype because of Endianness. The fix below sends correctly
converted CRQ for LE. This was not caught before because it
seems IMA is not enabled by default in kernel config and
IMA exercises this particular code path in vtpm.

Tested with IMA and VTPM enabled in kernel config and VTPM
enabled on both a BE OS and a LE OS ppc64 lpar. This exercised
CRQ and TPM command code paths in vtpm.
Patch is against Peter's tpmdd tree on github which included
Vicky's previous vtpm le patches.

Signed-off-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
Cc: <stable@vger.kernel.org> # eb71f8a5e3: "Added Little Endian support to vtpm module"
Cc: <stable@vger.kernel.org>
Reviewed-by: Ashley Lai <ashley@ahsleylai.com>
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
2015-03-05 23:41:46 +01:00
..
agp Merge branch 'drm-intel-next' of git://anongit.freedesktop.org/drm-intel into drm-next 2015-02-05 10:32:44 +10:00
hw_random hwrng: virtio - drop extra empty line 2015-01-26 11:34:23 +11:00
ipmi ipmi: Fix a memory ordering issue 2015-02-19 20:58:42 -06:00
mwave drivers/char: delete non-required instances of include <linux/init.h> 2014-02-07 15:10:19 -08:00
pcmcia char: synclink: Remove WARN_ON for bad port count 2014-07-10 16:07:46 -07:00
tpm tpm/ibmvtpm: Additional LE support for tpm_ibmvtpm_send 2015-03-05 23:41:46 +01:00
xilinx_hwicap char: xilinx_hwicap: Remove .owner field for driver 2014-09-23 23:13:13 -07:00
xillybus char: xillybus: drop owner assignment from platform_drivers 2014-10-20 16:20:21 +02:00
apm-emulation.c apm-emulation: add hibernation APM events to support suspend2disk 2014-01-07 13:50:28 +01:00
applicom.c applicom: dereferencing NULL on error path 2014-05-27 17:43:12 -07:00
applicom.h
bfin-otp.c
bsr.c bsr: avoid format string leaking into device name 2014-07-09 16:59:15 -07:00
ds1302.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ds1620.c ds1620: single_open() leak 2013-05-05 00:11:29 -04:00
dsp56k.c drivers/char/dsp56k.c: drop check for negativity of unsigned parameter 2014-07-17 18:38:37 -07:00
dtlk.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
efirtc.c rtc: single_open() leaks 2013-05-05 00:12:29 -04:00
generic_nvram.c
genrtc.c rtc: single_open() leaks 2013-05-05 00:12:29 -04:00
hangcheck-timer.c hangcheck-timer: cleanup casting in hangcheck_init() 2014-11-07 11:24:01 -08:00
hpet.c ACPICA: Resources: Provide common part for struct acpi_resource_address structures. 2015-01-26 16:09:56 +01:00
i8k.c i8k: Add support for fan labels 2015-01-25 09:17:59 -08:00
Kconfig drivers: char: mem: Make /dev/mem an optional device 2015-01-12 05:04:11 -08:00
lp.c char: Int overflow in lp_do_ioctl(). 2013-12-18 16:39:54 -08:00
Makefile xillybus: Move out of staging 2014-09-23 23:44:16 -07:00
mbcs.c char: remove use of __devinitconst 2012-11-21 12:55:19 -08:00
mbcs.h
mem.c Char / Misc patches for 3.20-rc1 2015-02-15 10:48:44 -08:00
misc.c Revert "misc: always assign miscdevice to file->private_data in open()" 2014-11-14 16:49:49 -08:00
mmtimer.c drivers/char/mmtimer.c: Remove useless kfree 2012-09-26 13:20:40 -07:00
msm_smd_pkt.c treewide: Fix typos in printk 2013-12-19 15:10:49 +01:00
mspec.c char: Use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT 2013-05-21 10:07:54 -07:00
nsc_gpio.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
nvram.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
nwbutton.c char: nwbutton: open-code interruptible_sleep_on 2014-01-08 15:29:52 -08:00
nwbutton.h
nwflash.c Merge branch 'late/fixes' into fixes 2012-10-07 07:22:32 -07:00
pc8736x_gpio.c pc8736x_gpio: use platform_device_unregister in pc8736x_gpio_cleanup() 2012-10-24 15:52:29 -07:00
ppdev.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
ps3flash.c ps3flash: switch to generic_file_llseek_size() 2013-06-29 12:57:33 +04:00
random.c random: Fix fast_mix() function 2015-02-09 12:28:42 -08:00
raw.c fs: remove mapping->backing_dev_info 2015-01-20 14:03:05 -07:00
rtc.c various char drivers: remove deprecated IRQF_DISABLED 2013-10-16 12:36:10 -07:00
scx200_gpio.c
snsc_event.c various char drivers: remove deprecated IRQF_DISABLED 2013-10-16 12:36:10 -07:00
snsc.c various char drivers: remove deprecated IRQF_DISABLED 2013-10-16 12:36:10 -07:00
snsc.h
sonypi.c char: drop owner assignment from platform_drivers 2014-10-20 16:20:19 +02:00
tb0219.c char: drop owner assignment from platform_drivers 2014-10-20 16:20:19 +02:00
tile-srom.c char: tile-srom: Add real platform bus parent 2014-10-02 10:19:34 -04:00
tlclk.c tlclk: remove deprecated IRQF_DISABLED 2013-10-16 12:36:10 -07:00
toshiba.c
ttyprintk.c ttyprintk: Allow built as a module 2014-04-16 14:21:06 -07:00
uv_mmtimer.c
virtio_console.c virtio: don't require a config space on the console device. 2015-02-11 15:03:17 +10:30