Re: [PATCH v2 2/2] x86/dom0: attempt to fixup p2m page-faults for PVH dom0

2025-02-28 Thread Oleksii Kurochko
On 2/18/25 3:35 PM, Roger Pau Monne wrote: When building a PVH dom0 Xen attempts to map all (relevant) MMIO regions into the p2m for dom0 access. However the information Xen has about the host memory map is limited. Xen doesn't have access to any resources described in ACPI dynamic tables, an

Re: [PATCH v2 2/2] x86/dom0: attempt to fixup p2m page-faults for PVH dom0

2025-02-18 Thread Roger Pau Monné
On Tue, Feb 18, 2025 at 04:58:20PM +0100, Jan Beulich wrote: > On 18.02.2025 16:44, Roger Pau Monné wrote: > > On Tue, Feb 18, 2025 at 03:35:04PM +0100, Roger Pau Monne wrote: > >> --- a/docs/misc/xen-command-line.pandoc > >> +++ b/docs/misc/xen-command-line.pandoc > >> @@ -822,7 +822,8 @@ Specify

Re: [PATCH v2 2/2] x86/dom0: attempt to fixup p2m page-faults for PVH dom0

2025-02-18 Thread Jan Beulich
On 18.02.2025 16:44, Roger Pau Monné wrote: > On Tue, Feb 18, 2025 at 03:35:04PM +0100, Roger Pau Monne wrote: >> --- a/docs/misc/xen-command-line.pandoc >> +++ b/docs/misc/xen-command-line.pandoc >> @@ -822,7 +822,8 @@ Specify the bit width of the DMA heap. >> >> ### dom0 >> = List of [ pv

Re: [PATCH v2 2/2] x86/dom0: attempt to fixup p2m page-faults for PVH dom0

2025-02-18 Thread Jan Beulich
On 18.02.2025 15:35, Roger Pau Monne wrote: > When building a PVH dom0 Xen attempts to map all (relevant) MMIO regions > into the p2m for dom0 access. However the information Xen has about the > host memory map is limited. Xen doesn't have access to any resources > described in ACPI dynamic table

Re: [PATCH v2 2/2] x86/dom0: attempt to fixup p2m page-faults for PVH dom0

2025-02-18 Thread Roger Pau Monné
On Tue, Feb 18, 2025 at 03:35:04PM +0100, Roger Pau Monne wrote: > When building a PVH dom0 Xen attempts to map all (relevant) MMIO regions > into the p2m for dom0 access. However the information Xen has about the > host memory map is limited. Xen doesn't have access to any resources > described

[PATCH v2 2/2] x86/dom0: attempt to fixup p2m page-faults for PVH dom0

2025-02-18 Thread Roger Pau Monne
When building a PVH dom0 Xen attempts to map all (relevant) MMIO regions into the p2m for dom0 access. However the information Xen has about the host memory map is limited. Xen doesn't have access to any resources described in ACPI dynamic tables, and hence the p2m mappings provided might not be