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[PATCH] xen/linker: be more selective about defining LLVM_COV_*
- To: xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: Roger Pau Monne <roger.pau@xxxxxxxxxx>
- Date: Wed, 26 Nov 2025 09:16:17 +0100
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- Cc: Roger Pau Monne <roger.pau@xxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Saman Dehghan <samaan.dehghan@xxxxxxxxx>
- Delivery-date: Wed, 26 Nov 2025 08:17:04 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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>
---
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 d80c89595979..f54fb2d15290 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.
--
2.51.0
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