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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/alpha/lib/ev6-clear_page.S
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
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 <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> 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 <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/alpha/lib/ev6-clear_page.S')
-rw-r--r--kernel/arch/alpha/lib/ev6-clear_page.S54
1 files changed, 54 insertions, 0 deletions
diff --git a/kernel/arch/alpha/lib/ev6-clear_page.S b/kernel/arch/alpha/lib/ev6-clear_page.S
new file mode 100644
index 000000000..adf4f7be0
--- /dev/null
+++ b/kernel/arch/alpha/lib/ev6-clear_page.S
@@ -0,0 +1,54 @@
+/*
+ * arch/alpha/lib/ev6-clear_page.S
+ *
+ * Zero an entire page.
+ */
+
+ .text
+ .align 4
+ .global clear_page
+ .ent clear_page
+clear_page:
+ .prologue 0
+
+ lda $0,128
+ lda $1,125
+ addq $16,64,$2
+ addq $16,128,$3
+
+ addq $16,192,$17
+ wh64 ($16)
+ wh64 ($2)
+ wh64 ($3)
+
+1: wh64 ($17)
+ stq $31,0($16)
+ subq $0,1,$0
+ subq $1,1,$1
+
+ stq $31,8($16)
+ stq $31,16($16)
+ addq $17,64,$2
+ nop
+
+ stq $31,24($16)
+ stq $31,32($16)
+ cmovgt $1,$2,$17
+ nop
+
+ stq $31,40($16)
+ stq $31,48($16)
+ nop
+ nop
+
+ stq $31,56($16)
+ addq $16,64,$16
+ nop
+ bne $0,1b
+
+ ret
+ nop
+ nop
+ nop
+
+ .end clear_page