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authorDavid S. Miller <davem@davemloft.net>2005-08-30 11:26:15 -0700
committerDavid S. Miller <davem@davemloft.net>2005-08-30 11:26:15 -0700
commitdbd2fdf549317de00e0b5ea465de5372039b7ee8 (patch)
tree67fad29313468b3f232264e98b508d9f3bd6a4de /arch
parentd7ce78fd9a51ca0d6b9a8cf35baef884ddb9a95c (diff)
downloadop-kernel-dev-dbd2fdf549317de00e0b5ea465de5372039b7ee8.zip
op-kernel-dev-dbd2fdf549317de00e0b5ea465de5372039b7ee8.tar.gz
[SPARC64]: Kill BRANCH_IF_ANY_CHEETAH() from copy page.
Just patch the branch at boot time instead. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch')
-rw-r--r--arch/sparc64/kernel/head.S3
-rw-r--r--arch/sparc64/lib/copy_page.S13
2 files changed, 14 insertions, 2 deletions
diff --git a/arch/sparc64/kernel/head.S b/arch/sparc64/kernel/head.S
index 8104a56..1fa06c4 100644
--- a/arch/sparc64/kernel/head.S
+++ b/arch/sparc64/kernel/head.S
@@ -538,11 +538,12 @@ cheetah_tlb_fixup:
nop
call cheetah_plus_patch_winfixup
nop
-
2: /* Patch copy/page operations to cheetah optimized versions. */
call cheetah_patch_copyops
nop
+ call cheetah_patch_copy_page
+ nop
call cheetah_patch_cachetlbops
nop
diff --git a/arch/sparc64/lib/copy_page.S b/arch/sparc64/lib/copy_page.S
index 23ebf2c..feebb14 100644
--- a/arch/sparc64/lib/copy_page.S
+++ b/arch/sparc64/lib/copy_page.S
@@ -87,7 +87,7 @@ copy_user_page: /* %o0=dest, %o1=src, %o2=vaddr */
membar #Sync
wrpr %o2, 0x0, %pstate
- BRANCH_IF_ANY_CHEETAH(g3,o2,1f)
+cheetah_copy_page_insn:
ba,pt %xcc, 9f
nop
@@ -240,3 +240,14 @@ copy_user_page: /* %o0=dest, %o1=src, %o2=vaddr */
stw %o4, [%g6 + TI_PRE_COUNT]
.size copy_user_page, .-copy_user_page
+
+ .globl cheetah_patch_copy_page
+cheetah_patch_copy_page:
+ sethi %hi(0x01000000), %o1 ! NOP
+ sethi %hi(cheetah_copy_page_insn), %o0
+ or %o0, %lo(cheetah_copy_page_insn), %o0
+ stw %o1, [%o0]
+ membar #StoreStore
+ flush %o0
+ retl
+ nop
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