On 16/10/2023 16:19, David Woodhouse wrote:
From: David Woodhouse <dwmw@xxxxxxxxxxxx>
The primary console is special because the toolstack maps a page at a
fixed GFN and also allocates the guest-side event channel. Add support
for that in emulated mode, so that we can have a primary console.
Add a *very* rudimentary stub of foriegnmem ops for emulated mode, which
supports literally nothing except a single-page mapping of the console
page. This might as well have been a hack in the xen_console driver, but
this way at least the special-casing is kept within the Xen emulation
code, and it gives us a hook for a more complete implementation if/when
we ever do need one.
Why can't you map the console page via the grant table like the xenstore
page?
Paul
