compute_checksum 209 arch/x86/boot/compressed/acpi.c if (compute_checksum((u8 *)rsdp, ACPI_RSDP_CHECKSUM_LENGTH)) compute_checksum 214 arch/x86/boot/compressed/acpi.c (compute_checksum((u8 *)rsdp, ACPI_RSDP_XCHECKSUM_LENGTH)))