[xen staging] xen/linker: be more selective about defining LLVM_COV_*

[patchbot@xxxxxxx]

commit 63107e02c2f78dd9c013c8f6428b55101bcd38d2
Author:     Roger Pau Monne <roger.pau@xxxxxxxxxx>
AuthorDate: Tue Nov 25 15:23:34 2025 +0100
Commit:     Roger Pau Monne <roger.pau@xxxxxxxxxx>
CommitDate: Wed Nov 26 10:42:20 2025 +0100

    xen/linker: be more selective about defining LLVM_COV_*
    
    There's no need to place the LLVM coverage sections in the linker script if
    not building with clang, or if code coverage is not enabled.
    
    No functional change intended.
    
    Fixes: 186c02e85961 ('xen: Support LLVM raw profile versions 5, 6, 7, 8, 9, 
and 10')
    Reported-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/include/xen/xen.lds.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/xen/include/xen/xen.lds.h b/xen/include/xen/xen.lds.h
index d80c895959..f54fb2d152 100644
--- a/xen/include/xen/xen.lds.h
+++ b/xen/include/xen/xen.lds.h
@@ -81,6 +81,7 @@
   .stab.index 0 : { *(.stab.index) }         \
   .stab.indexstr 0 : { *(.stab.indexstr) }
 
+#if defined(CONFIG_CC_IS_CLANG) && defined(CONFIG_COVERAGE)
 /* Clang coverage sections. */
 #define LLVM_COV_RW_DATA                                   \
     DECL_SECTION(__llvm_prf_cnts) { *(__llvm_prf_cnts) }   \
@@ -93,6 +94,11 @@
 #define LLVM_COV_DEBUG                                     \
     DECL_DEBUG(__llvm_covfun, 8)                           \
     DECL_DEBUG(__llvm_covmap, 8)
+#else
+#define LLVM_COV_RW_DATA
+#define LLVM_COV_RO_DATA
+#define LLVM_COV_DEBUG
+#endif
 
 /*
  * ELF sections.
--
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