[PATCH v2] x86/irq: Fix comment on IRQ vector layout

From: Sohil Mehta
Date: Wed Jun 26 2024 - 15:45:34 EST


commit f5a3562ec9dd ("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 would avoid unnecessary modifications to the same comment whenever
additional system vectors get added.

Signed-off-by: Sohil Mehta <sohil.mehta@xxxxxxxxx>
---
v2: Update the table to denote the other device interrupts range. [Jacob Pan]

v1: https://lore.kernel.org/lkml/20240618201320.2066726-1-sohil.mehta@xxxxxxxxx/

arch/x86/include/asm/irq_vectors.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/irq_vectors.h b/arch/x86/include/asm/irq_vectors.h
index 13aea8fc3d45..47051871b436 100644
--- a/arch/x86/include/asm/irq_vectors.h
+++ b/arch/x86/include/asm/irq_vectors.h
@@ -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.
*
--
2.34.1