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Date: Sat, 08 Jan 2005 07:53:54 -0700
From: Scott Long <scottl@freebsd.org>
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To: Pawel Worach <pawel.worach@telia.com>
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cc: freebsd-current@freebsd.org
Subject: Re: panic: pmap_mapdev: Couldn't alloc kernel virtual memory on
	mpt_attach
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Pawel Worach wrote:
> Pawel Worach wrote:
> 
>> mpt0: soft reset
>> mpt1: <LSILogic 1030 Ultra4 Adapter> port 0x2700-0x27ff mem 
>> 0xf7fc0000-0xf7fcffff,0xf7fd0000-0xf7fdffff irq 28 at device 7.1 on pci8
>> mpt1: linking with peer (mpt0)
>> mpt1: Reserved 0x10000 bytes for rid 0x14 type 3 at 0xf7fd0000
>> panic: pmap_mapdev: Couldn't alloc kernel virtual memory
> 
> 
> After a quick binary search I found the commit that sunk the mpt 
> battleship.
> 2004-11-21 04:30:00 UTC works
> 2004-11-21 05:00:00 UTC panics
> 
> Can KTR be used during the boot process, the busdma stuff seems pretty well
> instrumented?
> 
> scottl      2004-11-21 04:43:28 UTC
> 
>   FreeBSD src repository
> 
>   Modified files:
>     sys/i386/i386        busdma_machdep.c
>   Log:
>   MFC amd64:
>     Consolidate all of the bounce tests into the BUS_DMA_COULD_BOUNCE flag.
>     Allocate the bounce zone at either tag creation or map creation to help
>     avoid null-pointer derefs later on.  Track total pages per zone so that
>     each zone can get a minimum allocation at tag creation time instead of
>     being defeated by mis-behaving tags that suck up the max amount.
> 
>   Revision  Changes    Path
>   1.66      +45 -29    src/sys/i386/i386/busdma_machdep.c
> 

Ok, I'll look at this, thanks.

Scott