CONFIG_MAX_IRQ_LINES

This option specifies the number of IRQ lines in the system. It can be tuned to save some bytes in ROM, as it determines the size of the _irq_to_interrupt_vector_table, which is used at runtime to program to the PIC the association between vectors and interrupts.

Symbol:

MAX_IRQ_LINES
Type:

int
Value:

“128”
User value:

(no user value)
Visibility:

“y”
Is choice item:

false
Is defined:

true
Is from env.:

false
Is special:

false
Ranges:
  • [0, 256]
Prompts:
  • “Number of IRQ lines”
Default values:
  • 128 (value: “n”)
  • Condition: (none)
Selects:

(no selects)
Reverse (select-related) dependencies:
 

(no reverse dependencies)
Additional dependencies from enclosing menus and ifs:
 

X86 (value: “y”)
Locations:
  • ../arch/x86/core/Kconfig:51