atom feed3 messages in org.freebsd.freebsd-ia64TLB miss handlers
FromSent OnAttachments
Christian HildnerJan 28, 2005 3:54 am 
Espen SkoglundJan 28, 2005 4:24 am 
Doug RabsonJan 30, 2005 2:57 am 
Subject:TLB miss handlers
From:Christian Hildner (chri@hob.de)
Date:Jan 28, 2005 3:54:17 am
List:org.freebsd.freebsd-ia64

Hi,

looking at entry 0x0400 of the interrupt table I am wondering about the following lines:

IVT_ENTRY(Instruction_TLB, 0x0400) mov r16=cr.ifa mov r17=pr ;; thash r18=r16 ttag r19=r16 ;; add r21=16,r18 // tag add r20=24,r18 // collision chain ;; ld8 r21=[r21] // check VHPT tag ^^^^^^^^^^ Are you sure you cannot enter a nested TLB miss fault here on IA64 implementations that do not have the VHPT walker implemented? You wouldn't get fault 0x0000 since there is no walker that throws that fault.

Christian