diff options
| author | Scott Wood <scottwood@freescale.com> | 2015-04-16 00:40:23 (GMT) |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2015-08-08 03:59:20 (GMT) |
| commit | 2f7d2b74a9dd9140053f143e1c94da0fef3c1109 (patch) | |
| tree | cc90ce077e6bfa19440953c1914b78e690182403 /arch/powerpc/include | |
| parent | 501c8de7b061d2dc0c21a0a79fee3eddf30af8dd (diff) | |
| download | linux-2f7d2b74a9dd9140053f143e1c94da0fef3c1109.tar.xz | |
powerpc/mm: Don't call __flush_dcache_icache_phys() with PA>VA
__flush_dcache_icache_phys() requires the ability to access the
memory with the MMU disabled, which means that on a 32-bit system
any memory above 4 GiB is inaccessible. In particular, mpc86xx is
32-bit and can have more than 4 GiB of RAM.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/cacheflush.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/cacheflush.h b/arch/powerpc/include/asm/cacheflush.h index 30b35ff..6229e6b 100644 --- a/arch/powerpc/include/asm/cacheflush.h +++ b/arch/powerpc/include/asm/cacheflush.h @@ -40,7 +40,12 @@ extern void __flush_dcache_icache(void *page_va); extern void flush_dcache_icache_page(struct page *page); #if defined(CONFIG_PPC32) && !defined(CONFIG_BOOKE) extern void __flush_dcache_icache_phys(unsigned long physaddr); -#endif /* CONFIG_PPC32 && !CONFIG_BOOKE */ +#else +static inline void __flush_dcache_icache_phys(unsigned long physaddr) +{ + BUG(); +} +#endif extern void flush_dcache_range(unsigned long start, unsigned long stop); #ifdef CONFIG_PPC32 |