Re: [PATCH v2 0/8] powerpc/pseries: Nvram-to-pstore

From: Kees Cook
Date: Wed Apr 24 2013 - 16:45:14 EST

On Tue, Apr 23, 2013 at 11:19 PM, Aruna Balakrishnaiah
<aruna@xxxxxxxxxxxxxxxxxx> wrote:
> Currently the kernel provides the contents of p-series NVRAM only as a
> simple stream of bytes via /dev/nvram, which must be interpreted in user
> space by the nvram command in the powerpc-utils package. This patch set
> exploits the pstore subsystem to expose each partition in NVRAM as a
> separate file in /dev/pstore. For instance Oops messages will stored in a
> file named [dmesg-nvram-2].
> Changes from v1:
> - Reduce #ifdefs by and remove forward declarations of pstore callbacks
> - Handle return value of nvram_write_os_partition
> - Remove empty pstore callbacks and register pstore only when pstore
> is configured
> ---
> Aruna Balakrishnaiah (8):
> powerpc/pseries: Remove syslog prefix in uncompressed oops text
> powerpc/pseries: Add version and timestamp to oops header
> powerpc/pseries: Introduce generic read function to read nvram-partitions
> powerpc/pseries: Read/Write oops nvram partition via pstore
> powerpc/pseries: Read rtas partition via pstore
> powerpc/pseries: Distinguish between a os-partition and non-os partition
> powerpc/pseries: Read of-config partition via pstore
> powerpc/pseries: Read common partition via pstore
> arch/powerpc/platforms/pseries/nvram.c | 353 +++++++++++++++++++++++++++-----
> fs/pstore/inode.c | 9 +
> include/linux/pstore.h | 4
> 3 files changed, 313 insertions(+), 53 deletions(-)

This series looks good! Other than the naming conventions (are these
new pstore types really PPC-only?) I think it's a fine addition.



Kees Cook
Chrome OS Security
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