linux-kernel - [tip: x86/apic] x86/irq: Fix comment on IRQ vector layout

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Message-ID: <172354351806.2215.7659432951782407821.tip-bot2@tip-bot2>
Date: Tue, 13 Aug 2024 10:05:18 -0000
From: "tip-bot2 for Sohil Mehta" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Sohil Mehta <sohil.mehta@...el.com>, Thomas Gleixner <tglx@...utronix.de>,
 Jacob Pan <jacob.jun.pan@...ux.intel.com>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: x86/apic] x86/irq: Fix comment on IRQ vector layout

The following commit has been merged into the x86/apic branch of tip:

Commit-ID:     a1fab3e69d9d0e9b62aab4450cb97da432ac3ef2
Gitweb:        https://git.kernel.org/tip/a1fab3e69d9d0e9b62aab4450cb97da432ac3ef2
Author:        Sohil Mehta <sohil.mehta@...el.com>
AuthorDate:    Mon, 12 Aug 2024 21:43:18 
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Tue, 13 Aug 2024 12:00:09 +02:00

x86/irq: Fix comment on IRQ vector layout

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

Signed-off-by: Sohil Mehta <sohil.mehta@...el.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Reviewed-by: Jacob Pan <jacob.jun.pan@...ux.intel.com>
Link: https://lore.kernel.org/all/20240812214318.2715360-1-sohil.mehta@intel.com

---
 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 13aea8f..4705187 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.
  *