Re: [Xen-devel] [PATCH v13 3/3] iommu: add rmrr Xen command line option for extra rmrrs

2017-01-20 Thread Jan Beulich
>>> On 19.01.17 at 18:44, wrote: > On Thu, Jan 19, 2017 at 01:29:15AM -0700, Jan Beulich wrote: >> >>> On 18.01.17 at 20:56, wrote: >> > I am looking at rmrr_identity_mapping where the RMRR paddr get converted >> > to pfn and then mapped

Re: [Xen-devel] [PATCH v13 3/3] iommu: add rmrr Xen command line option for extra rmrrs

2017-01-19 Thread Elena Ufimtseva
On Thu, Jan 19, 2017 at 01:29:15AM -0700, Jan Beulich wrote: > >>> On 18.01.17 at 20:56, wrote: > > I am looking at rmrr_identity_mapping where the RMRR paddr get converted > > to pfn and then mapped with iommu. > > If ( rmrr->end_address & ~PAGE_SHIFT_MASK_4K ) == 0,

Re: [Xen-devel] [PATCH v13 3/3] iommu: add rmrr Xen command line option for extra rmrrs

2017-01-19 Thread Jan Beulich
>>> On 18.01.17 at 20:56, wrote: > I am looking at rmrr_identity_mapping where the RMRR paddr get converted > to pfn and then mapped with iommu. > If ( rmrr->end_address & ~PAGE_SHIFT_MASK_4K ) == 0, the while loop > while ( base_pfn < end_pfn ) > will not map

Re: [Xen-devel] [PATCH v13 3/3] iommu: add rmrr Xen command line option for extra rmrrs

2017-01-18 Thread Elena Ufimtseva
On Thu, Jan 12, 2017 at 04:44:42AM -0700, Jan Beulich wrote: > >>> On 10.01.17 at 23:57, wrote: > > Changes in v13: > > - Implement feedback from Kevin Tian. > > > > https://lists.xenproject.org/archives/html/xen-devel/2015-10/msg03169.html > > > >

Re: [Xen-devel] [PATCH v13 3/3] iommu: add rmrr Xen command line option for extra rmrrs

2017-01-12 Thread Jan Beulich
>>> On 10.01.17 at 23:57, wrote: > Changes in v13: > - Implement feedback from Kevin Tian. >https://lists.xenproject.org/archives/html/xen-devel/2015-10/msg03169.html >https://lists.xenproject.org/archives/html/xen-devel/2015-10/msg03170.html >

[Xen-devel] [PATCH v13 3/3] iommu: add rmrr Xen command line option for extra rmrrs

2017-01-10 Thread Venu Busireddy
From: Elena Ufimtseva On some platforms firmware fails to specify RMRR regions in ACPI tables and thus those regions will not be mapped in dom0 or guests and may cause IO Page Faults and prevent dom0 from booting if "iommu=dom0-strict" option is specified on the Xen