From: Wei Li liwei391@huawei.com
[ Upstream commit cf02ce742f09188272bcc8b0e62d789eb671fc4c ]
When 32-bit MIPS huge page support is enabled, we halve the number of pointers a PTE page holds, making its last half go to waste. Correspondingly, we should halve the number of kmap entries, as we just initialized only a single pte table for that in pagetable_init().
Fixes: 35476311e529 ("MIPS: Add partial 32-bit huge page support") Signed-off-by: Wei Li liwei391@huawei.com Signed-off-by: Thomas Bogendoerfer tsbogend@alpha.franken.de Signed-off-by: Sasha Levin sashal@kernel.org --- arch/mips/include/asm/highmem.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/mips/include/asm/highmem.h b/arch/mips/include/asm/highmem.h index 9d84aafc33d0..9a6bf4f011b5 100644 --- a/arch/mips/include/asm/highmem.h +++ b/arch/mips/include/asm/highmem.h @@ -36,7 +36,7 @@ extern pte_t *pkmap_page_table; * easily, subsequent pte tables have to be allocated in one physical * chunk of RAM. */ -#ifdef CONFIG_PHYS_ADDR_T_64BIT +#if defined(CONFIG_PHYS_ADDR_T_64BIT) || defined(CONFIG_MIPS_HUGE_TLB_SUPPORT) #define LAST_PKMAP 512 #else #define LAST_PKMAP 1024