[PATCH 07/29] x86: Restore "text" Program Header with dummy section
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- To: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
- Subject: [PATCH 07/29] x86: Restore "text" Program Header with dummy section
- From: Kees Cook <keescook@xxxxxxxxxxxx>
- Date: Thu, 26 Sep 2019 10:55:40 -0700
- Cc: Kees Cook <keescook@xxxxxxxxxxxx>, Rick Edgecombe <rick.p.edgecombe@xxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, linux-arch@xxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-alpha@xxxxxxxxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-c6x-dev@xxxxxxxxxxxxx, Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>, Michal Simek <monstr@xxxxxxxxx>, linux-parisc@xxxxxxxxxxxxxxx, linux-xtensa@xxxxxxxxxxxxxxxx, x86@xxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
- In-reply-to: <20190926175602.33098-1-keescook@chromium.org>
- References: <20190926175602.33098-1-keescook@chromium.org>
Instead of depending on markings in the section following NOTES to
restore the associated Program Header, use a dummy section, as done
in other architectures. This is preparation for moving NOTES into the
RO_DATA macro.
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
arch/x86/kernel/vmlinux.lds.S | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index e2feacf921a0..788e78978030 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -147,8 +147,9 @@ SECTIONS
} :text = 0x9090
NOTES :text :note
+ .dummy : { *(.dummy) } :text
- EXCEPTION_TABLE(16) :text = 0x9090
+ EXCEPTION_TABLE(16)
/* .text should occupy whole number of pages */
. = ALIGN(PAGE_SIZE);
--
2.17.1
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