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Re: [Xen-devel] (v2) Design proposal for RMRR fix

>>> On 14.01.15 at 21:42, <konrad.wilk@xxxxxxxxxx> wrote:
> On Wed, Jan 14, 2015 at 08:13:14AM +0000, Tian, Kevin wrote:
>> > From: Konrad Rzeszutek Wilk [mailto:konrad.wilk@xxxxxxxxxx]
>> > Sent: Wednesday, January 14, 2015 12:46 AM
>> > 
>> > 
>> > Perhaps an easier way of this is to use the existing
>> > mechanism we have - that is the XENMEM_memory_map (which
>> > BTW e820_host uses). If all of this is done in the libxl (which
>> > already does this based on the host E820, thought it can
>> > be modified to query the hypervisor for other 'reserved
>> > regions') and hvmloader is modified to use XENMEM_memory_map
>> > and base its E820 on that (and also QEMU-xen), then we solve
>> > this problem and also the http://bugs.xenproject.org/xen/bug/28? 
>> > 
>> I'm not familiar with that option, but a quick search looks saying
>> it's only for PV guest?
> It was originally for PV, but the hypercall can be executed under
> HVM now too (thanks for PVH patches).

Except that XENMEM_set_memory_map refuses to work on HVM
guests (but that clause is easily dropped).


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