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| author | Lucas Stach <l.stach@pengutronix.de> | 2018-07-25 16:44:37 +0200 |
|---|---|---|
| committer | Lucas Stach <l.stach@pengutronix.de> | 2018-07-27 10:44:26 +0200 |
| commit | c52b0baf0f69420b9fd1b88cdb2dd321bdd9c4be (patch) | |
| tree | f00866cfc20de8332753c893a2a3dadd36dc9ca0 /images | |
| parent | 4996ed5efbb2d7cd38a17fe456f8da820f1a1ef3 (diff) | |
| download | barebox-c52b0baf0f69420b9fd1b88cdb2dd321bdd9c4be.tar.gz barebox-c52b0baf0f69420b9fd1b88cdb2dd321bdd9c4be.tar.xz | |
ARM: mmu: fix cache flushing when replacing a section with a PTE
When replacing a section with a PTE, we must make sure that the newly
initialized PTE entries are flushed from the cache before changing the
entry in the TTB. Otherwise a L1 TLB miss causes the hardware pagetable
walker to walk into a PTE with undefined content, causing exactly that
behaviour.
Move all the necessary cache flushing to arm_create_pte(), to avoid any
caller getting this wrong in the future.
Fixes: e3e54c644180 (ARM: mmu: Implement on-demand PTE allocation)
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Diffstat (limited to 'images')
0 files changed, 0 insertions, 0 deletions