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| author | Markos Chandras <markos.chandras@imgtec.com> | 2014-11-05 08:25:37 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-11-24 07:44:04 +0100 |
| commit | 83fd43449baaf88fe5c03dd0081a062041837c51 (patch) | |
| tree | c7b79fe22f2b864d082ad7c685b3dfc66d93af5e /arch | |
| parent | 7f0dd7683c4d7e01dc99d8922190af6bcc9a0860 (diff) | |
| download | linux-83fd43449baaf88fe5c03dd0081a062041837c51.tar.gz linux-83fd43449baaf88fe5c03dd0081a062041837c51.tar.bz2 linux-83fd43449baaf88fe5c03dd0081a062041837c51.zip | |
MIPS: r4kcache: Add EVA case for protected_writeback_dcache_line
Commit de8974e3f76c0 ("MIPS: asm: r4kcache: Add EVA cache flushing
functions") added cache function for EVA using the cachee instruction.
However, it didn't add a case for the protected_writeback_dcache_line.
mips_dsemul() calls r4k_flush_cache_sigtramp() which in turn uses
the protected_writeback_dcache_line() to flush the trampoline code
back to memory. This used the wrong "cache" instruction leading to
random userland crashes on non-FPU cores.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: <stable@vger.kernel.org> # v3.15+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8331/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/include/asm/r4kcache.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/mips/include/asm/r4kcache.h b/arch/mips/include/asm/r4kcache.h index 4520adc8699b..cd6e0afc6833 100644 --- a/arch/mips/include/asm/r4kcache.h +++ b/arch/mips/include/asm/r4kcache.h @@ -257,7 +257,11 @@ static inline void protected_flush_icache_line(unsigned long addr) */ static inline void protected_writeback_dcache_line(unsigned long addr) { +#ifdef CONFIG_EVA + protected_cachee_op(Hit_Writeback_Inv_D, addr); +#else protected_cache_op(Hit_Writeback_Inv_D, addr); +#endif } static inline void protected_writeback_scache_line(unsigned long addr) |