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| author | Will Deacon <will.deacon@arm.com> | 2014-08-29 18:28:54 +0100 |
|---|---|---|
| committer | Prasad Sodagudi <psodagud@codeaurora.org> | 2017-02-24 09:42:33 -0800 |
| commit | 2845235d531769c4a2e9885ee10ee30151d98ebe (patch) | |
| tree | 028b643bc13f4a64cdb05c9d14770d2fdbce67cc /tools/perf/util/trace-event-scripting.c | |
| parent | f419890fd6558b73f835457246666d6ab8c34d7a (diff) | |
arm64: mm: allow enforcing of strict break-before-make for page tables
The ARM ARM strongly recommends using break-before-make when updating
page table entries in the following circumstances:
* A change of the memory type.
* A change of the cacheability attributes.
* A change of the output address (OA), if the OA of at least one of
the old translation table entry and the new translation table entry
is writable.
This patch adds a debug option to the kernel so that we can detect
break-before-make violations in set_pte and print a warning.
Change-Id: I038fd175d880355419b0795bf9967efea767e681
Git-commit: 07eea9d556ab76995119f0d034cf5f8280be278f
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions