From: Zong Li <zong.li@sifive.com>
To: palmer@dabbelt.com, paul.walmsley@sifive.com,
aou@eecs.berkeley.edu, linux-riscv@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: Zong Li <zong.li@sifive.com>
Subject: [PATCH v2 4/9] riscv: move exception table immediately after RO_DATA
Date: Mon, 9 Mar 2020 16:22:24 +0800 [thread overview]
Message-ID: <96f4735f9845ddf7f778d4977c25d405ade92644.1583741997.git.zong.li@sifive.com> (raw)
In-Reply-To: <cover.1583741997.git.zong.li@sifive.com>
Move EXCEPTION_TABLE immediately after RO_DATA. Make it easy to set the
attribution of the sections which should be read-only at a time.
Add _data to specify the start of data section with write permission.
This patch is prepared for STRICT_KERNEL_RWX support.
Signed-off-by: Zong Li <zong.li@sifive.com>
---
arch/riscv/kernel/vmlinux.lds.S | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/riscv/kernel/vmlinux.lds.S b/arch/riscv/kernel/vmlinux.lds.S
index 1e0193ded420..02e948b620af 100644
--- a/arch/riscv/kernel/vmlinux.lds.S
+++ b/arch/riscv/kernel/vmlinux.lds.S
@@ -58,6 +58,10 @@ SECTIONS
*(.srodata*)
}
+ EXCEPTION_TABLE(0x10)
+
+ _data = .;
+
RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
.sdata : {
__global_pointer$ = . + 0x800;
@@ -69,8 +73,6 @@ SECTIONS
BSS_SECTION(PAGE_SIZE, PAGE_SIZE, 0)
- EXCEPTION_TABLE(0x10)
-
.rel.dyn : {
*(.rel.dyn*)
}
--
2.25.1
next prev parent reply other threads:[~2020-03-09 8:22 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-09 8:22 [PATCH v2 0/9] Support strict kernel memory permissions for security Zong Li
2020-03-09 8:22 ` [PATCH v2 1/9] riscv: add ARCH_HAS_SET_MEMORY support Zong Li
2020-03-09 12:50 ` kbuild test robot
2020-03-09 8:22 ` [PATCH v2 2/9] riscv: add ARCH_HAS_SET_DIRECT_MAP support Zong Li
2020-03-09 8:22 ` [PATCH v2 3/9] riscv: add ARCH_SUPPORTS_DEBUG_PAGEALLOC support Zong Li
2020-03-09 8:22 ` Zong Li [this message]
2020-03-09 8:22 ` [PATCH v2 5/9] riscv: add alignment for text, rodata and data sections Zong Li
2020-03-09 8:22 ` [PATCH v2 6/9] riscv: add STRICT_KERNEL_RWX support Zong Li
2020-03-09 13:13 ` kbuild test robot
2020-03-09 8:22 ` [PATCH v2 7/9] riscv: add macro to get instruction length Zong Li
2020-03-09 8:22 ` [PATCH v2 8/9] riscv: introduce interfaces to patch kernel code Zong Li
2020-03-09 12:49 ` kbuild test robot
2020-03-09 13:12 ` kbuild test robot
2020-03-09 8:22 ` [PATCH v2 9/9] riscv: patch code by fixmap mapping Zong Li
2020-03-09 8:33 ` [PATCH v2 0/9] Support strict kernel memory permissions for security Zong Li
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=96f4735f9845ddf7f778d4977c25d405ade92644.1583741997.git.zong.li@sifive.com \
--to=zong.li@sifive.com \
--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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).