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Date: Wed, 1 Sep 2021 16:37:55 -0700 From: Kees Cook <keescook@...omium.org> To: Josh Poimboeuf <jpoimboe@...hat.com> Cc: Kees Cook <keescook@...omium.org>, Arnd Bergmann <arnd@...db.de>, Peter Zijlstra <peterz@...radead.org>, linux-arch@...r.kernel.org, Jessica Yu <jeyu@...nel.org>, Heiko Carstens <hca@...ux.ibm.com>, Vasily Gorbik <gor@...ux.ibm.com>, Christian Borntraeger <borntraeger@...ibm.com>, Alexander Egorenkov <egorenar@...ux.ibm.com>, Sven Schnelle <svens@...ux.ibm.com>, Ilya Leoshkevich <iii@...ux.ibm.com>, "Steven Rostedt (VMware)" <rostedt@...dmis.org>, Ingo Molnar <mingo@...nel.org>, Sami Tolvanen <samitolvanen@...gle.com>, linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org, linux-hardening@...r.kernel.org Subject: [PATCH 2/4] vmlinux.lds.h: Split .static_call_sites from .static_call_tramp_key These two sections are ro_after_init and .rodata respectively. While they will ultimately become read-only, there's no reason to confuse their macro names. Cc: Arnd Bergmann <arnd@...db.de> Cc: Josh Poimboeuf <jpoimboe@...hat.com> Cc: Peter Zijlstra (Intel) <peterz@...radead.org> Cc: linux-arch@...r.kernel.org Signed-off-by: Kees Cook <keescook@...omium.org> --- include/asm-generic/vmlinux.lds.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 70c74fdf9c9b..4781a8154254 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -396,17 +396,22 @@ . = __start_init_task + THREAD_SIZE; \ __end_init_task = .; +/* Sorted during __init. */ #define JUMP_TABLE_RO_AFTER_INIT_DATA \ . = ALIGN(8); \ __start___jump_table = .; \ KEEP(*(__jump_table)) \ __stop___jump_table = .; +/* Sorted during __init. */ #define STATIC_CALL_RO_AFTER_INIT_DATA \ . = ALIGN(8); \ __start_static_call_sites = .; \ KEEP(*(.static_call_sites)) \ __stop_static_call_sites = .; \ + +#define STATIC_CALL_RODATA \ + . = ALIGN(8); \ __start_static_call_tramp_key = .; \ KEEP(*(.static_call_tramp_key)) \ __stop_static_call_tramp_key = .; @@ -434,6 +439,7 @@ __start_rodata = .; \ *(.rodata) *(.rodata.*) \ SCHED_RODATA \ + STATIC_CALL_RODATA \ RO_AFTER_INIT_DATA /* Read only after init */ \ . = ALIGN(8); \ __start___tracepoints_ptrs = .; \ -- 2.30.2
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