panic: pmap_mapdev: Couldn't alloc kernel virtual memory on
mpt_attach
Scott Long
scottl at freebsd.org
Sat Jan 8 06:55:39 PST 2005
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
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