[xen master] x86: also mark assembler globals hidden

[patchbot@xxxxxxx]

commit 9de79317e844de8eaa28408f88c6b5a4ee177d20
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Mon Jan 22 13:52:13 2024 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Mon Jan 22 13:52:13 2024 +0100

    x86: also mark assembler globals hidden
    
    Let's have assembler symbols be consistent with C ones. In principle
    there are (a few) cases where gas can produce smaller code this way,
    just that for now there's a gas bug causing smaller code to be emitted
    even when that shouldn't be the case.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
---
 xen/arch/x86/include/asm/config.h | 4 ++--
 xen/include/xen/linkage.h         | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/xen/arch/x86/include/asm/config.h 
b/xen/arch/x86/include/asm/config.h
index 9eab23b6b9..660246d1da 100644
--- a/xen/arch/x86/include/asm/config.h
+++ b/xen/arch/x86/include/asm/config.h
@@ -47,11 +47,11 @@
 #define CODE_FILL 0x90
 #define ALIGN .align CODE_ALIGN, CODE_FILL
 #define ENTRY(name)                             \
-  .globl name;                                  \
   ALIGN;                                        \
-  name:
+  GLOBAL(name)
 #define GLOBAL(name)                            \
   .globl name;                                  \
+  .hidden name;                                 \
   name:
 #endif
 
diff --git a/xen/include/xen/linkage.h b/xen/include/xen/linkage.h
index 52fe4dfa65..b0f1fa2e09 100644
--- a/xen/include/xen/linkage.h
+++ b/xen/include/xen/linkage.h
@@ -19,7 +19,7 @@
 
 #define SYM_ALIGN(align...) .balign align
 
-#define SYM_L_GLOBAL(name) .globl name
+#define SYM_L_GLOBAL(name) .globl name; .hidden name
 #define SYM_L_WEAK(name)   .weak name
 #define SYM_L_LOCAL(name)  /* nothing */
 
--
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