Re: [MINUTES] Monthly Xen.org Technical Call (2015-07-22)

[David Vrabel <david.vrabel@citrix.com>]

On 23/07/15 10:08, Ian Campbell wrote:
> 
>               * For Linux:
>                       * The Xen entrypoint shall point to a "stub" in
>                         the same vein of the UEFI stub.
>                       * The stub will set up a basic initial set of
>                         page tables, fills in bootinfo and then jump to
>                         the native 32- or 64-bit entry point as
>                         appropriate. 
>                       * The stub can/should live in linux.git
>                         (presumably arch/x86/xen) but should be self
>                         -contained and isolated from the main body of
>                         Linux code. It does setup to impedance match
>                         the Xen entry point to the Linux native entry
>                         point.
>                       * Other things (e.g. lack of ACPI) should be
>                         addressed by fixing the native Linux entry path
>                         to be able to cope without them. Likewise
>                         installing PV hooks may need hypervisor
>                         detection to be moved earlier in the native
>                         boot path.

Agreed.

The goal here is to use as much of the native code paths as possible to
reduce the chance of Xen support being broken by x86 changes.

David