linux/arch/powerpc
Michael Ellerman 053a858efa powerpc: Make create_branch() return errors if the branch target is too large
If you pass a target value to create_branch() which is more than 32MB - 4,
or - 32MB away from the branch site, then it's impossible to create an
immediate branch.  The current code doesn't check, which will lead to us
creating a branch to somewhere else - which is bad.

For code that cares to check we return 0, which is easy to check for, and
for code that doesn't at least we'll be creating an illegal instruction,
rather than a branch to some random address.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:19 +10:00
..
boot Merge branch 'linux-2.6' 2008-06-30 10:16:50 +10:00
configs Merge branch 'linux-2.6' 2008-06-30 10:16:50 +10:00
kernel powerpc: Allow create_branch() to return errors 2008-07-01 11:28:19 +10:00
kvm KVM: ppc: Report bad GFNs 2008-06-06 21:22:41 +03:00
lib powerpc: Make create_branch() return errors if the branch target is too large 2008-07-01 11:28:19 +10:00
math-emu [POWERPC] Replace remaining __FUNCTION__ occurrences 2008-04-01 20:43:09 +11:00
mm powerpc: hash_huge_page() should get the WIMG bits from the lpte 2008-07-01 11:28:02 +10:00
oprofile Merge branch 'linux-2.6' 2008-04-14 21:11:02 +10:00
platforms powerpc: Allow create_branch() to return errors 2008-07-01 11:28:19 +10:00
sysdev Merge branch 'next' of master.kernel.org:/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx 2008-06-30 09:57:05 +10:00
xmon Merge branch 'linux-2.6' 2008-06-30 10:16:50 +10:00
.gitignore [POWERPC] Add files build to .gitignore 2006-12-04 20:41:29 +11:00
Kconfig powerpc/sysdev: implement FSL GTM support 2008-06-10 10:38:50 -05:00
Kconfig.debug [POWERPC] Add IRQSTACKS support on ppc32 2008-04-29 15:57:34 +10:00
Makefile powerpc: Get rid of CROSS32{AS,LD,OBJCOPY} 2008-06-30 22:30:39 +10:00