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lapic: skip setting intrcnt if lapic is not present

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Instead of panicking. Legacy PVH mode doesn't provide a lapic, and
since native_lapic_intrcnt is called unconditionally this would cause
the assert to trigger. Change the assert into a continue in order to
take into account the possibility of systems without a lapic.

Reviewed by:		jhb
Approved by:		re (gjb)
Sponsored by:		Citrix Systems R&D
Differential revision:	https://reviews.freebsd.org/D17015
This commit is contained in:
Roger Pau Monné 2018-09-13 07:13:13 +00:00
parent 4edbde911b
commit d7627401ec
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=338630
1 changed files with 2 additions and 1 deletions
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3
sys/x86/x86/local_apic.c
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@ -855,7 +855,8 @@ native_lapic_intrcnt(void *dummy __unused)
STAILQ_FOREACH(pc, &cpuhead, pc_allcpu) {
la = &lapics[pc->pc_apic_id];
KASSERT(la->la_present, ("missing APIC structure"));
if (!la->la_present)
continue;
snprintf(buf, sizeof(buf), "cpu%d:timer", pc->pc_cpuid);
intrcnt_add(buf, &la->la_timer_count);