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powerpc/vdso: Mark the vDSO code read-only after init

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VDSO text is fixed-up during init so it can't be const,
but it can be read-only after init.

Do the same as x86 in commit 018ef8dcf3 ("x86/vdso: Mark the vDSO
code read-only after init") and arm in commit 11bf9b8658 ("ARM/vdso:
Mark the vDSO code read-only after init"), move it into
ro_after_init section.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/e9892d288b646cbdfeef0b2b73edbaf6d3c6cabe.1734174500.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2024-12-14 12:09:31 +01:00 • committed by Madhavan Srinivasan
parent f66dbe4379
commit 9fa9712644
2 changed files with 2 additions and 2 deletions
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2
arch/powerpc/kernel/vdso32_wrapper.S
View file

@ -2,7 +2,7 @@
#include <linux/linkage.h>
#include <asm/page.h>
__PAGE_ALIGNED_DATA
.section ".data..ro_after_init", "aw"
.globl vdso32_start, vdso32_end
.balign PAGE_SIZE

2
arch/powerpc/kernel/vdso64_wrapper.S
View file

@ -2,7 +2,7 @@
#include <linux/linkage.h>
#include <asm/page.h>
__PAGE_ALIGNED_DATA
.section ".data..ro_after_init", "aw"
.globl vdso64_start, vdso64_end
.balign PAGE_SIZE