[PATCH v6 05/14] sparc64: vdso: Remove obsolete "fake section table" reservation

Thomas Weißschuh
2026-03-04T07:49:51Z

When the vDSO logic was copied from x86 to SPARC some unused remnants of
the fake section handling were copied, too. In x86 the original fake
section handling had already been removed incompletely in commit
da861e18eccc ("x86, vdso: Get rid of the fake section mechanism").
On x86 the reservation was only cleaned up in commit 24b7c77bbb24
("x86/vdso: Remove obsolete "fake section table" reservation").

Remove the reservation for SPARC, too.

Fixes: 9a08862a5d2e ("vDSO for sparc")
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Tested-by: Andreas Larsson <andreas@gaisler.com>
Reviewed-by: Andreas Larsson <andreas@gaisler.com>
Acked-by: Andreas Larsson <andreas@gaisler.com>
---
arch/sparc/vdso/vdso-layout.lds.S | 21 ---------------------
arch/sparc/vdso/vdso2c.c | 8 --------
2 files changed, 29 deletions(-)

diff --git a/arch/sparc/vdso/vdso-layout.lds.S b/arch/sparc/vdso/vdso-layout.lds.S
index d31e57e8a3bb..9e0804789d11 100644
--- a/arch/sparc/vdso/vdso-layout.lds.S
+++ b/arch/sparc/vdso/vdso-layout.lds.S
@@ -4,16 +4,6 @@
* This script controls its layout.
*/

-#if defined(BUILD_VDSO64)
-# define SHDR_SIZE 64
-#elif defined(BUILD_VDSO32)
-# define SHDR_SIZE 40
-#else
-# error unknown VDSO target
-#endif
-
-#define NUM_FAKE_SHDRS 7
-
SECTIONS
{
/*
@@ -47,19 +37,8 @@ SECTIONS
*(.bss*)
*(.dynbss*)
*(.gnu.linkonce.b.*)
-
- /*
- * Ideally this would live in a C file: kept in here for
- * compatibility with x86-64.
- */
- VDSO_FAKE_SECTION_TABLE_START = .;
- . = . + NUM_FAKE_SHDRS * SHDR_SIZE;
- VDSO_FAKE_SECTION_TABLE_END = .;
} :text

- .fake_shstrtab : { *(.fake_shstrtab) } :text
-
-
.note : { *(.note.*) } :text :note

.eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
diff --git a/arch/sparc/vdso/vdso2c.c b/arch/sparc/vdso/vdso2c.c
index dc81240aab6f..b97af5ec9f35 100644
--- a/arch/sparc/vdso/vdso2c.c
+++ b/arch/sparc/vdso/vdso2c.c
@@ -61,8 +61,6 @@ const char *outfilename;
/* Symbols that we need in vdso2c. */
enum {
sym_vvar_start,
- sym_VDSO_FAKE_SECTION_TABLE_START,
- sym_VDSO_FAKE_SECTION_TABLE_END,
};

struct vdso_sym {
@@ -72,12 +70,6 @@ struct vdso_sym {

struct vdso_sym required_syms[] = {
[sym_vvar_start] = {"vvar_start", 1},
- [sym_VDSO_FAKE_SECTION_TABLE_START] = {
- "VDSO_FAKE_SECTION_TABLE_START", 0
- },
- [sym_VDSO_FAKE_SECTION_TABLE_END] = {
- "VDSO_FAKE_SECTION_TABLE_END", 0
- },
};

__attribute__((format(printf, 1, 2))) __attribute__((noreturn))

--
2.53.0