On 12/15/20 3:27 PM, Mark Johnston wrote:
I'm seeing the following panic:
panic("vm_wait in early boot")
vm_wait_domain()
kmem_alloc_contig_pages()
kmem_alloc_contig_domainset()
kmem_alloc_contig()
contigmalloc()
x86bios_alloc()
vesa_configure()
vesa_mod_event()
vesa_module_register_init()
mi_startup()
Is it on a NUMA system? I see that the new logic won't work properly if
there are empty domains, so this suggests that we really do need a
special contig iterator as discussed in the review.
Yes, this is a numa system.
I just noticed, that before r368523 "flags" was updated by
_vm_domainset_iter_policy_init() to always contain M_NOWAIT and that
avoids the wait logic, but I think x86bios_alloc() doesn't get its
memory then.
I'm not sure if x86bios_alloc() needs to be attached a bit later anyway?
--HPS
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