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

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> 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


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