Commit a1fab3e6 authored by Sohil Mehta's avatar Sohil Mehta Committed by Thomas Gleixner
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x86/irq: Fix comment on IRQ vector layout 



commit f5a3562e ("x86/irq: Reserve a per CPU IDT vector for posted
MSIs") changed the first system vector from LOCAL_TIMER_VECTOR to
POSTED_MSI_NOTIFICATION_VECTOR. Reflect this change in the vector layout
comment as well.

However, instead of pointing to the specific vector, use the
FIRST_SYSTEM_VECTOR indirection which essentially refers to the same.

This avoids unnecessary modifications to the same comment whenever
additional system vectors get added.

Signed-off-by: default avatarSohil Mehta <sohil.mehta@intel.com>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Reviewed-by: default avatarJacob Pan <jacob.jun.pan@linux.intel.com>
Link: https://lore.kernel.org/all/20240812214318.2715360-1-sohil.mehta@intel.com
parent 2db5f86c

arch/x86/include/asm/irq_vectors.h

+2 −2
Original line number Diff line number Diff line
@@ -18,8 +18,8 @@ 
 *  Vectors   0 ...  31 : system traps and exceptions - hardcoded events

 *  Vectors  32 ... 127 : device interrupts

 *  Vector  128         : legacy int80 syscall interface

 *  Vectors 129 ... LOCAL_TIMER_VECTOR-1

 *  Vectors LOCAL_TIMER_VECTOR ... 255 : special interrupts

 *  Vectors 129 ... FIRST_SYSTEM_VECTOR-1 : device interrupts

 *  Vectors FIRST_SYSTEM_VECTOR ... 255   : special interrupts

 *

 * 64-bit x86 has per CPU IDT tables, 32-bit has one shared IDT table.

 *