From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org,
Michael Ellerman <mpe@ellerman.id.au>,
Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH v2 7/7] powerpc/build: put sys_call_table in .data.rel.ro if RELOCATABLE
Date: Fri, 16 Sep 2022 14:07:55 +1000 [thread overview]
Message-ID: <20220916040755.2398112-8-npiggin@gmail.com> (raw)
In-Reply-To: <20220916040755.2398112-1-npiggin@gmail.com>
Const function pointers by convention live in .data.rel.ro if they need
to be relocated. Now that .data.rel.ro is linked into the read-only
region, put them in the right section. This doesn't make much practical
difference, but it will make the C conversion of sys_call_table a
smaller change as far as linking goes.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
arch/powerpc/kernel/systbl.S | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/powerpc/kernel/systbl.S b/arch/powerpc/kernel/systbl.S
index cb3358886203..0bec33e86f50 100644
--- a/arch/powerpc/kernel/systbl.S
+++ b/arch/powerpc/kernel/systbl.S
@@ -12,7 +12,11 @@
#include <asm/ppc_asm.h>
+#ifdef CONFIG_RELOCATABLE
+.section .data.rel.ro,"aw"
+#else
.section .rodata,"a"
+#endif
#ifdef CONFIG_PPC64
.p2align 3
--
2.37.2
next prev parent reply other threads:[~2022-09-16 4:12 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-16 4:07 [PATCH v2 0/7] powerpc: build / linker improvements Nicholas Piggin
2022-09-16 4:07 ` [PATCH v2 1/7] powerpc: move __end_rodata to cover arch read-only sections Nicholas Piggin
2022-09-16 4:07 ` [PATCH v2 2/7] powerpc/32/build: move got1/got2 sections out of text Nicholas Piggin
2022-09-16 4:07 ` [PATCH v2 3/7] powerpc/build: move got, toc, plt, branch_lt sections to read-only Nicholas Piggin
2022-09-17 20:15 ` kernel test robot
2022-09-19 5:39 ` Michael Ellerman
2022-09-19 5:39 ` Michael Ellerman
2022-09-20 10:50 ` Nicholas Piggin
2022-09-20 10:50 ` Nicholas Piggin
2022-09-20 10:50 ` Nicholas Piggin
2022-09-16 4:07 ` [PATCH v2 4/7] powerpc/build: move .data.rel.ro, .sdata2 " Nicholas Piggin
2022-09-16 4:07 ` [PATCH v2 5/7] powerpc/64/build: only include .opd with ELFv1 Nicholas Piggin
2022-09-16 4:07 ` [PATCH v2 6/7] powerpc/64/build: merge .got and .toc input sections Nicholas Piggin
2022-09-16 18:45 ` Christophe Leroy
2022-09-17 6:36 ` Michael Ellerman
2022-09-16 4:07 ` Nicholas Piggin [this message]
2022-10-04 13:24 ` [PATCH v2 0/7] powerpc: build / linker improvements Michael Ellerman
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