All of lore.kernel.org
 help / color / mirror / Atom feed
From: Jisheng Zhang <jszhang3@mail.ustc.edu.cn>
To: Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] riscv: Move EXCEPTION_TABLE to RO_DATA segment
Date: Mon, 9 Aug 2021 01:26:41 +0800	[thread overview]
Message-ID: <20210809012641.1b7916a9@xhacker> (raw)
In-Reply-To: <20210809012509.4983c1d6@xhacker>

From: Jisheng Zhang <jszhang@kernel.org>

The _ex_table section is read-only, so move it to RO_DATA.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
---
 arch/riscv/kernel/vmlinux-xip.lds.S | 1 -
 arch/riscv/kernel/vmlinux.lds.S     | 4 ++--
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/riscv/kernel/vmlinux-xip.lds.S b/arch/riscv/kernel/vmlinux-xip.lds.S
index af776555ded9..9c9f35091ef0 100644
--- a/arch/riscv/kernel/vmlinux-xip.lds.S
+++ b/arch/riscv/kernel/vmlinux-xip.lds.S
@@ -121,7 +121,6 @@ SECTIONS
 	}
 
 	BSS_SECTION(PAGE_SIZE, PAGE_SIZE, 0)
-	EXCEPTION_TABLE(0x10)
 
 	.rel.dyn : AT(ADDR(.rel.dyn) - LOAD_OFFSET) {
 		*(.rel.dyn*)
diff --git a/arch/riscv/kernel/vmlinux.lds.S b/arch/riscv/kernel/vmlinux.lds.S
index 502d0826ecb1..5104f3a871e3 100644
--- a/arch/riscv/kernel/vmlinux.lds.S
+++ b/arch/riscv/kernel/vmlinux.lds.S
@@ -4,6 +4,8 @@
  * Copyright (C) 2017 SiFive
  */
 
+#define RO_EXCEPTION_TABLE_ALIGN	16
+
 #ifdef CONFIG_XIP_KERNEL
 #include "vmlinux-xip.lds.S"
 #else
@@ -112,8 +114,6 @@ SECTIONS
 		*(.srodata*)
 	}
 
-	EXCEPTION_TABLE(0x10)
-
 	. = ALIGN(SECTION_ALIGN);
 	_data = .;
 
-- 
2.32.0



_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

WARNING: multiple messages have this Message-ID (diff)
From: Jisheng Zhang <jszhang3@mail.ustc.edu.cn>
To: Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] riscv: Move EXCEPTION_TABLE to RO_DATA segment
Date: Mon, 9 Aug 2021 01:26:41 +0800	[thread overview]
Message-ID: <20210809012641.1b7916a9@xhacker> (raw)
In-Reply-To: <20210809012509.4983c1d6@xhacker>

From: Jisheng Zhang <jszhang@kernel.org>

The _ex_table section is read-only, so move it to RO_DATA.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
---
 arch/riscv/kernel/vmlinux-xip.lds.S | 1 -
 arch/riscv/kernel/vmlinux.lds.S     | 4 ++--
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/riscv/kernel/vmlinux-xip.lds.S b/arch/riscv/kernel/vmlinux-xip.lds.S
index af776555ded9..9c9f35091ef0 100644
--- a/arch/riscv/kernel/vmlinux-xip.lds.S
+++ b/arch/riscv/kernel/vmlinux-xip.lds.S
@@ -121,7 +121,6 @@ SECTIONS
 	}
 
 	BSS_SECTION(PAGE_SIZE, PAGE_SIZE, 0)
-	EXCEPTION_TABLE(0x10)
 
 	.rel.dyn : AT(ADDR(.rel.dyn) - LOAD_OFFSET) {
 		*(.rel.dyn*)
diff --git a/arch/riscv/kernel/vmlinux.lds.S b/arch/riscv/kernel/vmlinux.lds.S
index 502d0826ecb1..5104f3a871e3 100644
--- a/arch/riscv/kernel/vmlinux.lds.S
+++ b/arch/riscv/kernel/vmlinux.lds.S
@@ -4,6 +4,8 @@
  * Copyright (C) 2017 SiFive
  */
 
+#define RO_EXCEPTION_TABLE_ALIGN	16
+
 #ifdef CONFIG_XIP_KERNEL
 #include "vmlinux-xip.lds.S"
 #else
@@ -112,8 +114,6 @@ SECTIONS
 		*(.srodata*)
 	}
 
-	EXCEPTION_TABLE(0x10)
-
 	. = ALIGN(SECTION_ALIGN);
 	_data = .;
 
-- 
2.32.0



  parent reply	other threads:[~2021-08-08 17:33 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-08 17:25 [PATCH 0/2] riscv: improve __ex_table section handling Jisheng Zhang
2021-08-08 17:25 ` Jisheng Zhang
2021-08-08 17:25 ` [PATCH 1/2] riscv: Enable BUILDTIME_TABLE_SORT Jisheng Zhang
2021-08-08 17:25   ` Jisheng Zhang
2021-08-08 17:26 ` Jisheng Zhang [this message]
2021-08-08 17:26   ` [PATCH 2/2] riscv: Move EXCEPTION_TABLE to RO_DATA segment Jisheng Zhang
2021-08-26  6:47 ` [PATCH 0/2] riscv: improve __ex_table section handling Palmer Dabbelt
2021-08-26  6:47   ` Palmer Dabbelt
2021-08-26 14:06   ` Jisheng Zhang
2021-08-26 14:06     ` Jisheng Zhang

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210809012641.1b7916a9@xhacker \
    --to=jszhang3@mail.ustc.edu.cn \
    --cc=aou@eecs.berkeley.edu \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-riscv@lists.infradead.org \
    --cc=palmer@dabbelt.com \
    --cc=paul.walmsley@sifive.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.