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| author | John David Anglin <dave.anglin@bell.net> | 2022-03-29 21:54:36 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-13 21:59:14 +0300 |
| commit | 93a8347f72c046c1af2bb180867d18c598c20d11 (patch) | |
| tree | 7603eb8a239d2a40e15d0b406949ac6ee1d6a353 /mm | |
| parent | f77f482ec31a1f38eb38079622ca367b4b7d7442 (diff) | |
| download | linux-93a8347f72c046c1af2bb180867d18c598c20d11.tar.xz | |
parisc: Fix patch code locking and flushing
[ Upstream commit a9fe7fa7d874a536e0540469f314772c054a0323 ]
This change fixes the following:
1) The flags variable is not initialized. Always use raw_spin_lock_irqsave
and raw_spin_unlock_irqrestore to serialize patching.
2) flush_kernel_vmap_range is primarily intended for DMA flushes. Since
__patch_text_multiple is often called with interrupts disabled, it is
better to directly call flush_kernel_dcache_range_asm and
flush_kernel_icache_range_asm. This avoids an extra call.
3) The final call to flush_icache_range is unnecessary.
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions