[PATCH v4 04/39] x86/vdso: Fix DWARF generation for getrandom()
Josh Poimboeuf <[email protected]>
| Newsgroups | org.kernel.vger.linux-toolchains,org.kernel.vger.linux-kernel,org.kernel.vger.linux-perf-users,org.kernel.vger.linux-trace-kernel |
|---|---|
| Message-ID | <d33db71e14b4ad672aacd39c8a5d626a2a7da5a7.1737511963.git.jpoimboe@kernel.org> |
Add CFI annotations to the VDSO implementation of getrandom() so it will
have valid DWARF unwinding metadata.
Fixes: 33385150ac45 ("x86: vdso: Wire up getrandom() vDSO implementation")
Signed-off-by: Josh Poimboeuf <[email protected]>
---
arch/x86/entry/vdso/vgetrandom-chacha.S | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/x86/entry/vdso/vgetrandom-chacha.S b/arch/x86/entry/vdso/vgetrandom-chacha.S
index bcba5639b8ee..cc82da9216fb 100644
--- a/arch/x86/entry/vdso/vgetrandom-chacha.S
+++ b/arch/x86/entry/vdso/vgetrandom-chacha.S
@@ -4,7 +4,7 @@
*/
#include <linux/linkage.h>
-#include <asm/frame.h>
+#include <asm/dwarf2.h>
.section .rodata, "a"
.align 16
@@ -22,7 +22,7 @@ CONSTANTS: .octa 0x6b20657479622d323320646e61707865
* rcx: number of 64-byte blocks to write to output
*/
SYM_FUNC_START(__arch_chacha20_blocks_nostack)
-
+ CFI_STARTPROC
.set output, %rdi
.set key, %rsi
.set counter, %rdx
@@ -175,4 +175,5 @@ SYM_FUNC_START(__arch_chacha20_blocks_nostack)
pxor temp,temp
ret
+ CFI_ENDPROC
SYM_FUNC_END(__arch_chacha20_blocks_nostack)
--
2.48.1