x86: fix compile error in current tip.git

Gas 2.15 complains about 32-bit registers being used in lea.

  AS      arch/x86/lib/copy_user_64.o
/local/scratch-2/jeremy/hg/xen/paravirt/linux/arch/x86/lib/copy_user_64.S: Assembler messages:
/local/scratch-2/jeremy/hg/xen/paravirt/linux/arch/x86/lib/copy_user_64.S:188: Error: `(%edx,%ecx,8)' is not a valid 64 bit base/index expression
/local/scratch-2/jeremy/hg/xen/paravirt/linux/arch/x86/lib/copy_user_64.S:257: Error: `(%edx,%ecx,8)' is not a valid 64 bit base/index expression
  AS      arch/x86/lib/copy_user_nocache_64.o
/local/scratch-2/jeremy/hg/xen/paravirt/linux/arch/x86/lib/copy_user_nocache_64.S: Assembler messages:
/local/scratch-2/jeremy/hg/xen/paravirt/linux/arch/x86/lib/copy_user_nocache_64.S:107: Error: `(%edx,%ecx,8)' is not a valid 64 bit base/index expression

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Vitaly Mayatskikh <v.mayatskih@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/lib/copy_user_64.S b/arch/x86/lib/copy_user_64.S
index e5afb4a..dfdf428 100644 (file)
--- a/arch/x86/lib/copy_user_64.S
+++ b/arch/x86/lib/copy_user_64.S
@@ -185,7 +185,7 @@ ENTRY(copy_user_generic_unrolled)
 30:    shll $6,%ecx
        addl %ecx,%edx
        jmp 60f
-40:    leal (%edx,%ecx,8),%edx
+40:    lea (%rdx,%rcx,8),%rdx
        jmp 60f
 50:    movl %ecx,%edx
 60:    jmp copy_user_handle_tail /* ecx is zerorest also */
@@ -254,7 +254,7 @@ ENTRY(copy_user_generic_string)
        ret
 
        .section .fixup,"ax"
-11:    leal (%edx,%ecx,8),%ecx
+11:    lea (%rdx,%rcx,8),%rcx
 12:    movl %ecx,%edx          /* ecx is zerorest also */
        jmp copy_user_handle_tail
        .previous

diff --git a/arch/x86/lib/copy_user_nocache_64.S b/arch/x86/lib/copy_user_nocache_64.S
index 93353d6..40e0e30 100644 (file)
--- a/arch/x86/lib/copy_user_nocache_64.S
+++ b/arch/x86/lib/copy_user_nocache_64.S
@@ -104,7 +104,7 @@ ENTRY(__copy_user_nocache)
 30:    shll $6,%ecx
        addl %ecx,%edx
        jmp 60f
-40:    leal (%edx,%ecx,8),%edx
+40:    lea (%rdx,%rcx,8),%rdx
        jmp 60f
 50:    movl %ecx,%edx
 60:    sfence