diff options
| author | Jan Beulich <JBeulich@novell.com> | 2009-12-18 16:12:56 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-12-30 11:57:31 +0100 |
| commit | 1b1d9258181bae199dc940f4bd0298126b9a73d9 (patch) | |
| tree | b17ca149d943051fc76e79b75fc4b89c61b524a2 /arch/x86/lib/memcpy_64.S | |
| parent | 499a5f1efa0b0ac56ec5d060412aed84ae68e63e (diff) | |
x86-64: Modify copy_user_generic() alternatives mechanism
In order to avoid unnecessary chains of branches, rather than
implementing copy_user_generic() as a function consisting of
just a single (possibly patched) branch, instead properly deal
with patching call instructions in the alternative instructions
framework, and move the patching into the callers.
As a follow-on, one could also introduce something like
__EXPORT_SYMBOL_ALT() to avoid patching call sites in modules.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <4B2BB8180200007800026AE7@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/lib/memcpy_64.S')
0 files changed, 0 insertions, 0 deletions