linux/block/partitions
Davidlohr Bueso 6b02fa59a7 partitions/efi: loosen check fot pmbr size in lba
Matt found that commit 27a7c64217 ("partitions/efi: account for pmbr
size in lba") caused his GPT formatted eMMC device not to boot.  The
reason is that this commit enforced Linux to always check the lesser of
the whole disk or 2Tib for the pMBR size in LBA.  While most disk
partitioning tools out there create a pMBR with these characteristics,
Microsoft does not, as it always sets the entry to the maximum 32-bit
limitation - even though a drive may be smaller than that[1].

Loosen this check and only verify that the size is either the whole disk
or 0xFFFFFFFF.  No tool in its right mind would set it to any value
other than these.

[1] http://thestarman.pcministry.com/asm/mbr/GPT.htm#GPTPT

Reported-and-tested-by: Matt Porter <matt.porter@linaro.org>
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-15 07:10:16 -04:00
..
Kconfig block: support embedded device command line partition 2013-09-11 15:56:57 -07:00
Makefile block: support embedded device command line partition 2013-09-11 15:56:57 -07:00
acorn.c move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
acorn.h move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
aix.c partitions: add aix lvm partition support files 2013-07-09 10:33:28 -07:00
aix.h partitions: add aix lvm partition support files 2013-07-09 10:33:28 -07:00
amiga.c move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
amiga.h move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
atari.c move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
atari.h move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
check.c block: support embedded device command line partition 2013-09-11 15:56:57 -07:00
check.h block/partitions: optimize memory allocation in check_partition() 2013-02-27 19:10:21 -08:00
cmdline.c block: support embedded device command line partition 2013-09-11 15:56:57 -07:00
cmdline.h block: support embedded device command line partition 2013-09-11 15:56:57 -07:00
efi.c partitions/efi: loosen check fot pmbr size in lba 2013-09-15 07:10:16 -04:00
efi.h partitions/efi: delete annoying emacs style comments 2013-09-11 15:59:18 -07:00
ibm.c s390/partitions: make partition detection independent from DASD ioctls 2012-09-26 15:45:05 +02:00
ibm.h move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
karma.c move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
karma.h move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
ldm.c LDM: Fix reassembly of extended VBLKs. 2012-02-24 09:37:42 +00:00
ldm.h move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
mac.c block/partitions/mac.c: obey the state->limit constraint 2013-02-27 19:10:21 -08:00
mac.h move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
msdos.c partitions/msdos: enumerate also AIX LVM partitions 2013-07-09 10:33:28 -07:00
msdos.h move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
osf.c move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
osf.h move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
sgi.c move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
sgi.h move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
sun.c move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
sun.h move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
sysv68.c move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
sysv68.h move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
ultrix.c move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
ultrix.h move fs/partitions to block/ 2012-01-03 22:54:06 -05:00