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From: "Thomas Weißschuh" <thomas.weissschuh@linutronix.de>
To: Andy Lutomirski <luto@kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	 Vincenzo Frascino <vincenzo.frascino@arm.com>,
	 Arnd Bergmann <arnd@arndb.de>,
	"David S. Miller" <davem@davemloft.net>,
	 Andreas Larsson <andreas@gaisler.com>,
	Nick Alcock <nick.alcock@oracle.com>,
	 John Stultz <jstultz@google.com>,
	Stephen Boyd <sboyd@kernel.org>,
	 John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,
	 Shuah Khan <shuah@kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	 Will Deacon <will@kernel.org>, Theodore Ts'o <tytso@mit.edu>,
	 "Jason A. Donenfeld" <Jason@zx2c4.com>,
	 Russell King <linux@armlinux.org.uk>,
	 Madhavan Srinivasan <maddy@linux.ibm.com>,
	 Michael Ellerman <mpe@ellerman.id.au>,
	Nicholas Piggin <npiggin@gmail.com>,
	 Christophe Leroy <christophe.leroy@csgroup.eu>,
	 Huacai Chen <chenhuacai@kernel.org>,
	WANG Xuerui <kernel@xen0n.name>,
	 Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	 Heiko Carstens <hca@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	 Alexander Gordeev <agordeev@linux.ibm.com>,
	 Christian Borntraeger <borntraeger@linux.ibm.com>,
	 Sven Schnelle <svens@linux.ibm.com>,
	 Nagarathnam Muthusamy <nagarathnam.muthusamy@oracle.com>,
	 Shannon Nelson <sln@onemain.com>
Cc: linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org,
	linux-kselftest@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev,
	linux-mips@vger.kernel.org, linux-s390@vger.kernel.org,
	"Thomas Weißschuh" <thomas.weissschuh@linutronix.de>
Subject: [PATCH v4 26/35] sparc64: vdso: Remove obsolete "fake section table" reservation
Date: Tue, 14 Oct 2025 08:49:12 +0200	[thread overview]
Message-ID: <20251014-vdso-sparc64-generic-2-v4-26-e0607bf49dea@linutronix.de> (raw)
In-Reply-To: <20251014-vdso-sparc64-generic-2-v4-0-e0607bf49dea@linutronix.de>

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 d31e57e8a3bbffd3afb187cd631e2491fde64148..9e0804789d11696948f11be367480b530a1f18d9 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 dc81240aab6fd31a72b8a751cc2a4a821a3c4e4e..b97af5ec9f35c01f2a976b6213b1768b677ad231 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))

-- 
2.51.0


  parent reply	other threads:[~2025-10-14  6:49 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-14  6:48 [PATCH v4 00/35] sparc64: vdso: Switch to the generic vDSO library Thomas Weißschuh
2025-10-14  6:48 ` [PATCH v4 01/35] selftests: vDSO: vdso_test_correctness: Handle different tv_usec types Thomas Weißschuh
2025-10-14  6:48 ` [PATCH v4 02/35] arm64: vDSO: getrandom: Explicitly include asm/alternative.h Thomas Weißschuh
2025-10-14  6:48 ` [PATCH v4 03/35] arm64: vDSO: gettimeofday: Explicitly include vdso/clocksource.h Thomas Weißschuh
2025-10-14  6:48 ` [PATCH v4 04/35] arm64: vDSO: compat_gettimeofday: Add explicit includes Thomas Weißschuh
2025-10-14  6:48 ` [PATCH v4 05/35] ARM: vdso: gettimeofday: " Thomas Weißschuh
2025-10-14  6:48 ` [PATCH v4 06/35] powerpc/vdso/gettimeofday: Explicitly include vdso/time32.h Thomas Weißschuh
2025-10-14  7:42   ` Christophe Leroy
2025-10-14  6:48 ` [PATCH v4 07/35] powerpc/vdso: Explicitly include asm/cputable.h and asm/feature-fixups.h Thomas Weißschuh
2025-10-14  6:48 ` [PATCH v4 08/35] LoongArch: vDSO: Explicitly include asm/vdso/vdso.h Thomas Weißschuh
2025-10-14  6:48 ` [PATCH v4 09/35] MIPS: vdso: Add include guard to asm/vdso/vdso.h Thomas Weißschuh
2025-10-14  6:48 ` [PATCH v4 10/35] MIPS: vdso: Explicitly include asm/vdso/vdso.h Thomas Weißschuh
2025-10-14  6:48 ` [PATCH v4 11/35] random: vDSO: Add explicit includes Thomas Weißschuh
2025-10-14  6:48 ` [PATCH v4 12/35] vdso/gettimeofday: " Thomas Weißschuh
2025-10-14  6:48 ` [PATCH v4 13/35] vdso/helpers: Explicitly include vdso/processor.h Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 14/35] vdso/datapage: Remove inclusion of gettimeofday.h Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 15/35] vdso/datapage: Trim down unnecessary includes Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 16/35] random: vDSO: trim vDSO includes Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 17/35] random: vDSO: remove ifdeffery Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 18/35] random: vDSO: split out datapage update into helper functions Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 19/35] random: vDSO: only access vDSO datapage after random_init() Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 20/35] s390/time: Set up vDSO datapage later Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 21/35] vdso/datastore: Reduce scope of some variables in vvar_fault() Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 22/35] vdso/datastore: Drop inclusion of linux/mmap_lock.h Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 23/35] vdso/datastore: Map pages through struct page Thomas Weißschuh
2025-11-03 15:24   ` Mark Brown
2025-11-03 15:54     ` Thomas Gleixner
2025-11-03 16:55       ` Mark Brown
     [not found]     ` <CGME20251104084442eucas1p2af1bd88393f4d6a532df1cd41f32a287@eucas1p2.samsung.com>
2025-11-04  8:44       ` Marek Szyprowski
2025-11-04  8:58         ` Thomas Weißschuh
2025-11-04 13:14         ` Mark Brown
2025-11-04 15:43           ` Thomas Weißschuh
2025-11-04 15:47             ` Mark Brown
2025-11-04 16:03               ` Thomas Weißschuh
2025-11-04 16:21                 ` Mark Brown
2025-11-04 13:29         ` Mark Brown
2025-11-06 13:28         ` Mark Brown
2025-11-06 13:32           ` Thomas Weißschuh
2025-11-06 13:39             ` Mark Brown
2025-10-14  6:49 ` [PATCH v4 24/35] vdso/datastore: Allocate data pages dynamically Thomas Weißschuh
2025-11-04  8:49   ` [tip: timers/vdso] " Lad Prabhakar
2025-11-05 15:34   ` [PATCH v4 24/35] " Heiko Carstens
2025-11-05 16:13     ` Thomas Weißschuh
2025-11-06 12:43     ` Aithal, Srikanth
2025-10-14  6:49 ` [PATCH v4 25/35] sparc64: vdso: Link with -z noexecstack Thomas Weißschuh
2025-10-14  6:49 ` Thomas Weißschuh [this message]
2025-10-14  6:49 ` [PATCH v4 27/35] sparc64: vdso: Replace code patching with runtime conditional Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 28/35] sparc64: vdso: Move hardware counter read into header Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 29/35] sparc64: vdso: Move syscall fallbacks " Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 30/35] sparc64: vdso: Introduce vdso/processor.h Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 31/35] sparc64: vdso: Switch to the generic vDSO library Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 32/35] sparc64: vdso2c: Drop sym_vvar_start handling Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 33/35] sparc64: vdso2c: Remove symbol handling Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 34/35] sparc64: vdso: Implement clock_gettime64() Thomas Weißschuh
2025-10-14  6:49 ` [PATCH v4 35/35] clocksource: remove ARCH_CLOCKSOURCE_DATA Thomas Weißschuh

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