From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/sparc/lib/U3copy_to_user.S | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 kernel/arch/sparc/lib/U3copy_to_user.S (limited to 'kernel/arch/sparc/lib/U3copy_to_user.S') diff --git a/kernel/arch/sparc/lib/U3copy_to_user.S b/kernel/arch/sparc/lib/U3copy_to_user.S new file mode 100644 index 000000000..ef1e493af --- /dev/null +++ b/kernel/arch/sparc/lib/U3copy_to_user.S @@ -0,0 +1,29 @@ +/* U3copy_to_user.S: UltraSparc-III optimized copy to userspace. + * + * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com) + */ + +#define EX_ST(x) \ +98: x; \ + .section __ex_table,"a";\ + .align 4; \ + .word 98b, __retl_one; \ + .text; \ + .align 4; + +#define FUNC_NAME U3copy_to_user +#define STORE(type,src,addr) type##a src, [addr] ASI_AIUS +#define STORE_BLK(src,addr) stda src, [addr] ASI_BLK_AIUS +#define EX_RETVAL(x) 0 + + /* Writing to %asi is _expensive_ so we hardcode it. + * Reading %asi to check for KERNEL_DS is comparatively + * cheap. + */ +#define PREAMBLE \ + rd %asi, %g1; \ + cmp %g1, ASI_AIUS; \ + bne,pn %icc, ___copy_in_user; \ + nop; \ + +#include "U3memcpy.S" -- cgit 1.2.3-korg