asm-generic: optimize generic uaccess for 8-byte loads and stores (6edd1dba) · Commits · 戴 / test

include/asm-generic/uaccess.h

+10 −0

Original line number	Diff line number	Diff line
		@@ -24,6 +24,11 @@ raw_copy_from_user(void to, const void __user from, unsigned long n)
		case 4:
		(u32 )to = (u32 __force )from;
		return 0;
		#ifdef CONFIG_64BIT
		case 8:
		(u64 )to = (u64 __force )from;
		return 0;
		#endif
		}
		}

		@@ -45,6 +50,11 @@ raw_copy_to_user(void __user to, const void from, unsigned long n)
		case 4:
		(u32 __force )to = (u32 )from;
		return 0;
		#ifdef CONFIG_64BIT
		case 8:
		(u64 __force )to = (u64 )from;
		return 0;
		#endif
		default:
		break;
		}