diff options
Diffstat (limited to 'arch/loongarch/mm/cache.c')
| -rw-r--r-- | arch/loongarch/mm/cache.c | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/arch/loongarch/mm/cache.c b/arch/loongarch/mm/cache.c index 6be04d36ca07..06dc570eb429 100644 --- a/arch/loongarch/mm/cache.c +++ b/arch/loongarch/mm/cache.c @@ -31,16 +31,6 @@ void cache_error_setup(void) set_merr_handler(0x0, &except_vec_cex, 0x80); } -/* - * LoongArch maintains ICache/DCache coherency by hardware, - * we just need "ibar" to avoid instruction hazard here. - */ -void local_flush_icache_range(unsigned long start, unsigned long end) -{ - asm volatile ("\tibar 0\n"::); -} -EXPORT_SYMBOL(local_flush_icache_range); - static void flush_cache_leaf(unsigned int leaf) { int i, j, nr_nodes; @@ -160,8 +150,8 @@ void cpu_cache_init(void) static const pgprot_t protection_map[16] = { [VM_NONE] = __pgprot(_CACHE_CC | _PAGE_USER | - _PAGE_PROTNONE | _PAGE_NO_EXEC | - _PAGE_NO_READ), + _PAGE_NO_EXEC | _PAGE_NO_READ | + (_PAGE_PROTNONE ? : _PAGE_PRESENT)), [VM_READ] = __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT | _PAGE_NO_EXEC), @@ -180,8 +170,8 @@ static const pgprot_t protection_map[16] = { [VM_EXEC | VM_WRITE | VM_READ] = __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT), [VM_SHARED] = __pgprot(_CACHE_CC | _PAGE_USER | - _PAGE_PROTNONE | _PAGE_NO_EXEC | - _PAGE_NO_READ), + _PAGE_NO_EXEC | _PAGE_NO_READ | + (_PAGE_PROTNONE ? : _PAGE_PRESENT)), [VM_SHARED | VM_READ] = __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT | _PAGE_NO_EXEC), |