Commit 9fc4fe6e authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Thomas Gleixner
Browse files

sparc64: vdso: Remove obsolete "fake section table" reservation 



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
da861e18 ("x86, vdso: Get rid of the fake section mechanism").
On x86 the reservation was only cleaned up in commit 24b7c77b
("x86/vdso: Remove obsolete "fake section table" reservation").

Remove the reservation for SPARC, too.

Fixes: 9a08862a ("vDSO for sparc")
Signed-off-by: default avatarThomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: default avatarThomas Gleixner <tglx@kernel.org>
Tested-by: default avatarAndreas Larsson <andreas@gaisler.com>
Reviewed-by: default avatarAndreas Larsson <andreas@gaisler.com>
Acked-by: default avatarAndreas Larsson <andreas@gaisler.com>
Link: https://patch.msgid.link/20260304-vdso-sparc64-generic-2-v6-5-d8eb3b0e1410@linutronix.de
parent acc4f131

arch/sparc/vdso/vdso-layout.lds.S

+0 −21
Original line number Diff line number Diff line
@@ -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

arch/sparc/vdso/vdso2c.c

+0 −8
Original line number Diff line number Diff line
@@ -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))