Re: [Xen-devel] Shared page tables between ETP and IOMMU issue

2015-02-27 Thread Jan Beulich
>>> On 26.02.15 at 19:02, wrote: > El 26/02/15 a les 17.43, Jan Beulich ha escrit: > On 26.02.15 at 17:29, wrote: >>> OK, I will try to take a look. All those faults come from physical >>> memory ranges that are supposed to be usable, and in fact the CPU seems >>> to be able to read/write fro

Re: [Xen-devel] Shared page tables between ETP and IOMMU issue

2015-02-26 Thread Elena Ufimtseva
On Thu, Feb 26, 2015 at 2:31 PM, Roger Pau Monné wrote: > El 26/02/15 a les 19.02, Roger Pau Monné ha escrit: >> El 26/02/15 a les 17.43, Jan Beulich ha escrit: >> On 26.02.15 at 17:29, wrote: OK, I will try to take a look. All those faults come from physical memory ranges that are

Re: [Xen-devel] Shared page tables between ETP and IOMMU issue

2015-02-26 Thread Roger Pau Monné
El 26/02/15 a les 19.02, Roger Pau Monné ha escrit: > El 26/02/15 a les 17.43, Jan Beulich ha escrit: > On 26.02.15 at 17:29, wrote: >>> OK, I will try to take a look. All those faults come from physical >>> memory ranges that are supposed to be usable, and in fact the CPU seems >>> to be able

Re: [Xen-devel] Shared page tables between ETP and IOMMU issue

2015-02-26 Thread Roger Pau Monné
El 26/02/15 a les 20.28, Konrad Rzeszutek Wilk ha escrit: > On Thu, Feb 26, 2015 at 07:02:22PM +0100, Roger Pau Monné wrote: >> El 26/02/15 a les 17.43, Jan Beulich ha escrit: >> On 26.02.15 at 17:29, wrote: OK, I will try to take a look. All those faults come from physical memory ra

Re: [Xen-devel] Shared page tables between ETP and IOMMU issue

2015-02-26 Thread Konrad Rzeszutek Wilk
On Thu, Feb 26, 2015 at 07:02:22PM +0100, Roger Pau Monné wrote: > El 26/02/15 a les 17.43, Jan Beulich ha escrit: > On 26.02.15 at 17:29, wrote: > >> OK, I will try to take a look. All those faults come from physical > >> memory ranges that are supposed to be usable, and in fact the CPU seem

Re: [Xen-devel] Shared page tables between ETP and IOMMU issue

2015-02-26 Thread Roger Pau Monné
El 26/02/15 a les 17.43, Jan Beulich ha escrit: On 26.02.15 at 17:29, wrote: >> OK, I will try to take a look. All those faults come from physical >> memory ranges that are supposed to be usable, and in fact the CPU seems >> to be able to read/write from them without problems, or else the gue

Re: [Xen-devel] Shared page tables between ETP and IOMMU issue

2015-02-26 Thread Jan Beulich
>>> On 26.02.15 at 16:45, wrote: > While testing PVH Dom0 support on a newer Core i3-5010U I've found that > sharing the page tables between EPT and the IOMMUs don't work. Booting > with iommu=no-sharept solves the problem, but I'm unsure what causes > this issue. Is FreeBSD fiddling with its

Re: [Xen-devel] Shared page tables between ETP and IOMMU issue

2015-02-26 Thread Roger Pau Monné
El 26/02/15 a les 16.57, Jan Beulich ha escrit: On 26.02.15 at 16:45, wrote: >> While testing PVH Dom0 support on a newer Core i3-5010U I've found that >> sharing the page tables between EPT and the IOMMUs don't work. Booting >> with iommu=no-sharept solves the problem, but I'm unsure what

Re: [Xen-devel] Shared page tables between ETP and IOMMU issue

2015-02-26 Thread Jan Beulich
>>> On 26.02.15 at 17:29, wrote: > OK, I will try to take a look. All those faults come from physical > memory ranges that are supposed to be usable, and in fact the CPU seems > to be able to read/write from them without problems, or else the guest > would have crashed much more early. Regarding s