What's the meaning of this part of code in Linux source code?

0
ENTRY(gdt_table)
 .quad 0x0000000000000000 /* NULL descriptor */

 .quad 0x0000000000000000 /* not used */

 .quad 0x00cf9a000000ffff /* 0x10 kernel 4GB code at 0x00000000 */

 .quad 0x00cf92000000ffff /* 0x18 kernel 4GB data at 0x00000000 */

 .quad 0x00cffa000000ffff /* 0x23 user 4GB code at 0x00000000 */

 .quad 0x00cff2000000ffff /* 0x2b user 4GB data at 0x00000000 */

 .quad 0x0000000000000000 /* not used */

 .quad 0x0000000000000000 /* not used */
linux
asked on Stack Overflow May 19, 2021 by JASON CHAN • edited May 19, 2021 by Biffen

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