Re: [Xen-devel] [PATCH RFC] p2m: p2m_mmio_direct set RW permissions

[Elena Ufimtseva <elena.ufimtseva@xxxxxxxxxx>]

----- JBeulich@xxxxxxxx wrote:

> >>> On 22.01.15 at 16:18, <elena.ufimtseva@xxxxxxxxxx> wrote:
> > ----- JBeulich@xxxxxxxx wrote:
> >> >>> On 22.01.15 at 12:37, <roger.pau@xxxxxxxxxx> wrote:
> >> > I don't think we are setting proper IOMMU entries for this
> regions
> >> at
> >> > all with the current PVH Dom0 code. IMHO instead of just adding
> >> IOMMU
> >> > entries for every MMIO region we should just add IOMMU entries
> for
> >> the
> >> > RMRR regions.
> >> 
> >> Yes, RMRR regions should certainly be put there as r/w entries.
> > 
> > How it will help in cases like this when this regions are not
> reported as 
> > RMRRs in ACPI?
> 
> It won't help - I was merely commenting on Roger's statement.
> 
> > Also, pv dom0 has no such problem.
> 
> Even with "iommu=dom0-strict"?
> 
> Jan

Even with iommu=dom0-strict pv dom0 boots just fine.

Elena


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