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author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2016-06-07 12:20:51 +0200 |
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committer | Amit Pundir <amit.pundir@linaro.org> | 2016-10-12 17:34:22 +0530 |
commit | 0827c0e185a17d42be07a8b17a310813dba84a62 (patch) | |
tree | bf88cb9166dfb724c1e354a5cd57846a0a2a9e27 /android | |
parent | c749e858e15c8409af272aa5d1bbd3fc6ce46439 (diff) |
UPSTREAM: vmlinux.lds.h: allow arch specific handling of ro_after_init data section
commit c74ba8b3480d ("arch: Introduce post-init read-only memory")
introduced the __ro_after_init attribute which allows to add variables
to the ro_after_init data section.
This new section was added to rodata, even though it contains writable
data. This in turn causes problems on architectures which mark the
page table entries read-only that point to rodata very early.
This patch allows architectures to implement an own handling of the
.data..ro_after_init section.
Usually that would be:
- mark the rodata section read-only very early
- mark the ro_after_init section read-only within mark_rodata_ro
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Bug: 31660652
Change-Id: If68cb4d86f88678c9bac8c47072775ab85ef5770
(cherry picked from commit 32fb2fc5c357fb99616bbe100dbcb27bc7f5d045)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Diffstat (limited to 'android')
0 files changed, 0 insertions, 0 deletions