op-kernel-dev - Development kernel branch for OpenPOWER systems

	Commit message (Collapse)	Author	Age	Files	Lines
*	x86-64: Modify memcpy()/memset() alternatives mechanism	Jan Beulich	2009-12-30	1	-15/+8
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	In order to avoid unnecessary chains of branches, rather than implementing memcpy()/memset()'s access to their alternative implementations via a jump, patch the (larger) original function directly. The memcpy() part of this is slightly subtle: while alternative instruction patching does itself use memcpy(), with the replacement block being less than 64-bytes in size the main loop of the original function doesn't get used for copying memcpy_c() over memcpy(), and hence we can safely write over its beginning. Also note that the CFI annotations are fine for both variants of each of the functions. 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: <4B2BB8D30200007800026AF2@vpn.id2.novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
*	x86: memcpy, clean up	Ingo Molnar	2009-03-12	1	-55/+81
\| \| \| \| \| \| \| \| \|	Impact: cleanup Make this file more readable by bringing it more in line with the usual kernel style. Signed-off-by: Ingo Molnar <mingo@elte.hu>
*	x86-64: remove unnecessary spill/reload of rbx from memcpy	Jan Beulich	2009-03-12	1	-7/+0
\| \| \| \| \| \| \| \| \| \|	Impact: micro-optimization This should slightly improve its performance. Signed-off-by: Jan Beulich <jbeulich@novell.com> LKML-Reference: <49B8F641.76E4.0078.0@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
*	x86_64: move lib	Thomas Gleixner	2007-10-11	1	-0/+131
	Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>