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Increase IOAPIC_MAX_ID to 255 (from 254) 

A test system provided by AMD panicked with "madt_parse_apics:
I/O APIC ID 255 too high".  I/O APIC ID 255 is acceptable, so increase
the limit.

Reviewed by:	jhb, kib
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D45157
This commit is contained in:
Ed Maste 2024-05-10 13:40:59 -04:00
parent 9d8a3718e2
commit 4e32868183
1 changed files with 6 additions and 1 deletions
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7
sys/x86/include/apicvar.h
View File

@ -78,7 +78,12 @@
#define MAX_APIC_ID 0x800 #define MAX_APIC_ID 0x800
#define APIC_ID_ALL 0xffffffff #define APIC_ID_ALL 0xffffffff
#define IOAPIC_MAX_ID xAPIC_MAX_APIC_ID /*
* The 0xff ID is used for broadcast IPIs for local APICs when not using
* x2APIC. IPIs are not sent to I/O APICs so it's acceptable for an I/O APIC
* to use that ID.
*/
#define IOAPIC_MAX_ID 0xff
/* I/O Interrupts are used for external devices such as ISA, PCI, etc. */ /* I/O Interrupts are used for external devices such as ISA, PCI, etc. */
#define APIC_IO_INTS (IDT_IO_INTS + 16) #define APIC_IO_INTS (IDT_IO_INTS + 16)