[PATCH v2 4/4] x86: enable llvm-cov support

Wentao Zhang
2024-09-05T04:35:01Z

Set ARCH_HAS_* options to "y" in kconfig and include section description in
linker script.

Signed-off-by: Wentao Zhang <wentaoz5@illinois.edu>
Reviewed-by: Chuck Wolber <chuck.wolber@boeing.com>
Tested-by: Chuck Wolber <chuck.wolber@boeing.com>
---
arch/x86/Kconfig | 2 ++
arch/x86/kernel/vmlinux.lds.S | 2 ++
2 files changed, 4 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 007bab9f2..e0a8f7b42 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -85,6 +85,8 @@ config X86
select ARCH_HAS_FORTIFY_SOURCE
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_KCOV if X86_64
+ select ARCH_HAS_LLVM_COV if X86_64
+ select ARCH_HAS_LLVM_COV_PROFILE_ALL if X86_64
select ARCH_HAS_KERNEL_FPU_SUPPORT
select ARCH_HAS_MEM_ENCRYPT
select ARCH_HAS_MEMBARRIER_SYNC_CORE
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 6e73403e8..904337722 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -191,6 +191,8 @@ SECTIONS

BUG_TABLE

+ LLVM_COV_DATA
+
ORC_UNWIND_TABLE

. = ALIGN(PAGE_SIZE);
--
2.45.2