Re: [Xen-devel] pv-grub boot hangs when iommu=soft. Booting kernel directly with the flags works. MiniOS screws around with page flags.

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Tue, Jul 06, 2010 at 05:36:33PM -0400, Richie wrote:
> Konrad Rzeszutek Wilk wrote:
> >[    0.000000] Kernel command line: ro root=/dev/mapper/vg_vs03-lv_root 
> >rd_LVM_LV=vg_vs03/lv_root rd_LVM_LV=vg_vs03/lv_swap rd_NO_LUKS rd_NO_MD 
> >rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us debug 
> >earlyprintk=xen console=hvc0 iommu=swiotlb swiotlb=force
> >[    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
> shouldn't that be iommu=soft or is it another valid spec.?

It should be as iommu=soft. If you use the override (swiotlb=force) it
can also automatically turn SWIOTLB on.


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