From: Jens Remus <jremus@linux.ibm.com>
To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
bpf@vger.kernel.org, x86@kernel.org, linux-mm@kvack.org,
Steven Rostedt <rostedt@kernel.org>
Cc: Jens Remus <jremus@linux.ibm.com>,
Josh Poimboeuf <jpoimboe@kernel.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>, Jiri Olsa <jolsa@kernel.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Andrii Nakryiko <andrii@kernel.org>,
Indu Bhagat <indu.bhagat@oracle.com>,
"Jose E. Marchesi" <jemarch@gnu.org>,
Beau Belgrave <beaub@linux.microsoft.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Florian Weimer <fweimer@redhat.com>, Kees Cook <kees@kernel.org>,
"Carlos O'Donell" <codonell@redhat.com>,
Sam James <sam@gentoo.org>, Dylan Hatch <dylanbhatch@google.com>,
Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
David Hildenbrand <david@redhat.com>,
"H. Peter Anvin" <hpa@zytor.com>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Michal Hocko <mhocko@suse.com>, Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Vlastimil Babka <vbabka@suse.cz>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
"Steven Rostedt (Google)" <rostedt@goodmis.org>
Subject: [PATCH v6 1/6] x86/vdso: Fix DWARF generation for getrandom()
Date: Thu, 29 Jan 2026 12:27:21 +0100 [thread overview]
Message-ID: <20260129112726.892340-2-jremus@linux.ibm.com> (raw)
In-Reply-To: <20260129112726.892340-1-jremus@linux.ibm.com>
From: Josh Poimboeuf <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 <jpoimboe@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Jens Remus <jremus@linux.ibm.com>
---
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)
--
2.51.0
next prev parent reply other threads:[~2026-01-29 11:28 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-29 11:27 [PATCH v6 0/6] x86/vdso: VDSO updates and fixes for sframes Jens Remus
2026-01-29 11:27 ` Jens Remus [this message]
2026-01-29 11:27 ` [PATCH v6 2/6] x86/asm: Avoid emitting DWARF CFI for non-VDSO Jens Remus
2026-01-29 11:27 ` [PATCH v6 3/6] x86/asm: Simplify VDSO DWARF generation Jens Remus
2026-01-29 11:27 ` [PATCH v6 4/6] x86/vdso: Use SYM_FUNC_{START,END} in __kernel_vsyscall() Jens Remus
2026-01-29 11:27 ` [PATCH v6 5/6] x86/vdso: Use CFI macros in __vdso_sgx_enter_enclave() Jens Remus
2026-01-29 11:27 ` [PATCH v6 6/6] x86/vdso: Enable sframe generation in VDSO Jens Remus
2026-02-01 8:23 ` [PATCH v6 0/6] x86/vdso: VDSO updates and fixes for sframes H. Peter Anvin
2026-02-03 17:22 ` Jens Remus
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