Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) #ifndef _ASM_GENERIC_HUGETLB_ENCODE_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #define _ASM_GENERIC_HUGETLB_ENCODE_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Several system calls take a flag to request "hugetlb" huge pages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Without further specification, these system calls will use the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * system's default huge page size.  If a system supports multiple
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * huge page sizes, the desired huge page size can be specified in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  * bits [26:31] of the flag arguments.  The value in these 6 bits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  * will encode the log2 of the huge page size.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  * The following definitions are associated with this huge page size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  * encoding in flag arguments.  System call specific header files
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)  * that use this encoding should include this file.  They can then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  * provide definitions based on these with their own specific prefix.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  * for example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  * #define MAP_HUGE_SHIFT HUGETLB_FLAG_ENCODE_SHIFT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define HUGETLB_FLAG_ENCODE_SHIFT	26
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define HUGETLB_FLAG_ENCODE_MASK	0x3f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define HUGETLB_FLAG_ENCODE_16KB	(14 << HUGETLB_FLAG_ENCODE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define HUGETLB_FLAG_ENCODE_64KB	(16 << HUGETLB_FLAG_ENCODE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define HUGETLB_FLAG_ENCODE_512KB	(19 << HUGETLB_FLAG_ENCODE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define HUGETLB_FLAG_ENCODE_1MB		(20 << HUGETLB_FLAG_ENCODE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define HUGETLB_FLAG_ENCODE_2MB		(21 << HUGETLB_FLAG_ENCODE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define HUGETLB_FLAG_ENCODE_8MB		(23 << HUGETLB_FLAG_ENCODE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define HUGETLB_FLAG_ENCODE_16MB	(24 << HUGETLB_FLAG_ENCODE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define HUGETLB_FLAG_ENCODE_32MB	(25 << HUGETLB_FLAG_ENCODE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define HUGETLB_FLAG_ENCODE_256MB	(28 << HUGETLB_FLAG_ENCODE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define HUGETLB_FLAG_ENCODE_512MB	(29 << HUGETLB_FLAG_ENCODE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define HUGETLB_FLAG_ENCODE_1GB		(30 << HUGETLB_FLAG_ENCODE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define HUGETLB_FLAG_ENCODE_2GB		(31 << HUGETLB_FLAG_ENCODE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define HUGETLB_FLAG_ENCODE_16GB	(34 << HUGETLB_FLAG_ENCODE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #endif /* _ASM_GENERIC_HUGETLB_ENCODE_H_ */