From: Qingfang Deng <dqfext@gmail.com>
To: Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Cc: Qingfang Deng <qingfang.deng@siflower.com.cn>
Subject: [PATCH] riscv: do not select MODULE_SECTIONS by default
Date: Sat, 11 May 2024 09:57:25 +0800 [thread overview]
Message-ID: <20240511015725.1162-1-dqfext@gmail.com> (raw)
From: Qingfang Deng <qingfang.deng@siflower.com.cn>
Since commit aad15bc85c18 ("riscv: Change code model of module to
medany to improve data accessing"), kernel modules have not been built
with -fPIC, so they wouldn't have R_RISCV_GOT_HI20 or R_RISCV_CALL_PLT
relocations, and handling of those relocations is unnecessary.
If RELOCATABLE=y, kernel modules will be built with -fPIE, which would
reintroduce said relocations, so only select MODULE_SECTIONS when
RELOCATABLE.
Signed-off-by: Qingfang Deng <qingfang.deng@siflower.com.cn>
---
arch/riscv/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 6bec1bce6586..3f92dd3b45d2 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -169,7 +169,6 @@ config RISCV
select LOCK_MM_AND_FIND_VMA
select MMU_GATHER_RCU_TABLE_FREE if SMP && MMU
select MODULES_USE_ELF_RELA if MODULES
- select MODULE_SECTIONS if MODULES
select OF
select OF_EARLY_FLATTREE
select OF_IRQ
@@ -858,6 +857,7 @@ config PARAVIRT_TIME_ACCOUNTING
config RELOCATABLE
bool "Build a relocatable kernel"
depends on MMU && 64BIT && !XIP_KERNEL
+ select MODULE_SECTIONS if MODULES
help
This builds a kernel as a Position Independent Executable (PIE),
which retains all relocation metadata required to relocate the
--
2.34.1
next reply other threads:[~2024-05-11 1:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-11 1:57 Qingfang Deng [this message]
2024-05-14 22:03 ` [PATCH] riscv: do not select MODULE_SECTIONS by default Charlie Jenkins
2024-05-22 14:10 ` patchwork-bot+linux-riscv
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