Re: [PATCH v6 13/51] hw/xen: Add xen_overlay device for emulating shared xenheap pages

2023-01-16 Thread Paul Durrant
On 10/01/2023 12:20, David Woodhouse wrote: From: David Woodhouse For the shared info page and for grant tables, Xen shares its own pages from the "Xen heap" to the guest. The guest requests that a given page from a certain address space (XENMAPSPACE_shared_info, etc.) be mapped to a given GPA

[PATCH v6 13/51] hw/xen: Add xen_overlay device for emulating shared xenheap pages

2023-01-10 Thread David Woodhouse
From: David Woodhouse For the shared info page and for grant tables, Xen shares its own pages from the "Xen heap" to the guest. The guest requests that a given page from a certain address space (XENMAPSPACE_shared_info, etc.) be mapped to a given GPA using the XENMEM_add_to_physmap hypercall. To