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Subject[tip:x86/trampoline] x86, realmode: Move bits to the proper sections in trampoline_64.S
Commit-ID:  024742861124ef26dae4cfc620250f8f47ac934a
Gitweb: http://git.kernel.org/tip/024742861124ef26dae4cfc620250f8f47ac934a
Author: H. Peter Anvin <hpa@linux.intel.com>
AuthorDate: Tue, 8 May 2012 21:22:33 +0300
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Tue, 8 May 2012 11:48:03 -0700

x86, realmode: Move bits to the proper sections in trampoline_64.S

Move various bits to the sections they really belong in in
trampoline_64.S. Use GLOBAL() rather than ENTRY() for data objects:
ENTRY() should only be used with code and forces alignment to 16
bytes.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/r/1336501366-28617-11-git-send-email-jarkko.sakkinen@intel.com
---
arch/x86/realmode/rm/trampoline_64.S | 10 ++++++----
1 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/arch/x86/realmode/rm/trampoline_64.S b/arch/x86/realmode/rm/trampoline_64.S
index 063da00..66c58cf 100644
--- a/arch/x86/realmode/rm/trampoline_64.S
+++ b/arch/x86/realmode/rm/trampoline_64.S
@@ -80,6 +80,7 @@ no_longmode:
jmp no_longmode
#include "../kernel/verify_cpu.S"

+ .section ".text32","ax"
.code32
.balign 4
ENTRY(startup_32)
@@ -114,6 +115,7 @@ ENTRY(startup_32)
*/
ljmpl *(pa_startup_64_vector)

+ .section ".text64","ax"
.code64
.balign 4
ENTRY(startup_64)
@@ -123,7 +125,8 @@ ENTRY(startup_64)
addl %esi, %eax
jmp *%rax

- # Careful these need to be in the same 64K segment as the above;
+ .section ".rodata","a"
+ .balign 16
tidt:
.word 0 # idt limit = 0
.word 0, 0 # idt base = 0L
@@ -153,9 +156,8 @@ startup_64_vector:
.word __KERNEL_CS, 0

.data
-
.balign 4
-ENTRY(trampoline_status)
+GLOBAL(trampoline_status)
.long 0

trampoline_stack:
@@ -164,7 +166,7 @@ trampoline_stack_end:

.globl level3_ident_pgt
.globl level3_kernel_pgt
-ENTRY(trampoline_level4_pgt)
+GLOBAL(trampoline_level4_pgt)
level3_ident_pgt: .quad 0
.fill 510,8,0
level3_kernel_pgt: .quad 0

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