Re: [Xen-users] passthrough PCI SCSI device

[listmail <listmail@xxxxxxxxxxxx>]

That seems weird to suggest dom0_mem=-128M.  I think you can specify 
swiotlb=XXX to allocate some memory, but i'm not sure if its bytes or 
kbytes by default.
James Pifer wrote:
> On Mon, 2010-04-26 at 12:58 -0400, listmail wrote:
>   
> > If I got this right, on the extra line if direct booting or on the pv's 
> > grub menu.lst kernel line.
> > You may also need iommu=soft ahead of that.
> >     
>
> Thanks. Tried that and got:
> # xm start vmtest03 -c
> Linux version 2.6.16.60-0.54.5-xenpae (geeko@buildhost) (gcc version 4.1.2 
> 20070115 (SUSE Linux)) #1 SMP Fri Sep 4 01:28:03 UTC 2009
> BIOS-provided physical RAM map:
>  Xen: 0000000000000000 - 0000000040800000 (usable)
> 304MB HIGHMEM available.
> 727MB LOWMEM available.
> NX (Execute Disable) protection: active
> ACPI in unprivileged domain disabled
> Allocating PCI resources starting at 50000000 (gap: 40800000:bf800000)
> Built 1 zonelists
> Kernel command line: iommu=soft swiotlb=force 
> Enabling fast FPU save and restore... done.
> Enabling unmasked SIMD FPU exception support... done.
> Initializing CPU#0
> PID hash table entries: 4096 (order: 12, 65536 bytes)
> Xen reported: 2399.316 MHz processor.
> Console: colour dummy device 80x25
> Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
> Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
> Kernel panic - not syncing: No suitable physical memory available for SWIOTLB 
> buffer!
> Use dom0_mem Xen boot parameter to reserve
> some DMA memory (e.g., dom0_mem=-128M).
>
> Thanks,
> James
>
>
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