]> git.openfabrics.org - ~shefty/rdma-dev.git/commit
x86/alternatives: Check replacementlen <= instrlen at build time
authorJan Beulich <JBeulich@novell.com>
Fri, 27 Nov 2009 15:04:58 +0000 (15:04 +0000)
committerIngo Molnar <mingo@elte.hu>
Wed, 2 Dec 2009 10:39:45 +0000 (11:39 +0100)
commit01be50a308be466e122c3a8b3d535f1b673ecbd2
tree051a50e00ba89d113569379dfc6510090d719583
parent8ec6993d9f7d961014af970ded57542961fe9ad9
x86/alternatives: Check replacementlen <= instrlen at build time

Having run into the run-(boot-)time check a couple of times lately,
I finally took time to find a build-time check so that one doesn't
need to analyze the register/stack dump and resolve this (through
manual lookup in vmlinux) to the offending construct.

The assembler will emit a message like "Error: value of <num> too
large for field of 1 bytes at <offset>", which while not pointing
out the source location still makes analysis quite a bit easier.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
LKML-Reference: <4B0FF8AA0200007800022703@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/include/asm/alternative.h