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| author | John David Anglin <dave.anglin@bell.net> | 2022-03-29 18:54:36 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-15 14:18:36 +0200 |
| commit | abb1f310e7f02bb8d7ab5a85df1706c027473377 (patch) | |
| tree | 150eecc896a3c6e7577464148b34c959a559d7b1 /mm | |
| parent | bab8e3b4f68ac393c42da73d0bce891d281ded55 (diff) | |
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