From c105f5c1fa0615eae0f30741c287e3ca0b64aa15 Mon Sep 17 00:00:00 2001
From: Konstantin Belousov <kib@FreeBSD.org>
Date: Wed, 18 Mar 2020 21:24:34 +0000
Subject: [PATCH] Widen the stored io_apic_id to 8 bits.

It seems that the newer Intel chipset did that, and Linux reads 8
bits. The only detail is that all seen datasheets, even under NDA,
claim that io apic id is 4 bits.

Submitted by:	jeff
Reviewed by:	jhb
Tested by:	flo, pho
MFC after:	2 weeks
Differential revision:	https://reviews.freebsd.org/D23965
---
 sys/x86/x86/io_apic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/x86/x86/io_apic.c b/sys/x86/x86/io_apic.c
index e66d00211546..8385ae6d04b0 100644
--- a/sys/x86/x86/io_apic.c
+++ b/sys/x86/x86/io_apic.c
@@ -94,7 +94,7 @@ struct ioapic_intsrc {
 struct ioapic {
 	struct pic io_pic;
 	u_int io_id:8;			/* logical ID */
-	u_int io_apic_id:4;
+	u_int io_apic_id:8;
 	u_int io_intbase:8;		/* System Interrupt base */
 	u_int io_numintr:8;
 	u_int io_haseoi:1;