>>> On 09.02.16 at 15:36, <boris.ostrov...@oracle.com> wrote: > On 02/09/2016 06:58 AM, Roger Pau Monné wrote: >> El 9/2/16 a les 11:56, Andrew Cooper ha escrit: >>> On 08/02/16 19:03, Roger Pau Monné wrote: >>>> >>>> Description of physical hardware devices will always come from ACPI, in the >>>> absence of any physical hardware device no ACPI tables will be provided. >>>> The >>>> presence of ACPI tables can be detected by finding the RSDP, just like on >>>> bare metal. >>> As we are extending the base structure, why not have an RSDP paddr in it >>> as well? This avoids the need to scan RAM, and also serves as an >>> indication of "No ACPI". >> Right, this seems fine to me. I can send a patch later to expand the >> structure unless anyone else complains. >> > > Isn't scanning memory the standard procedure for finding RSDP? Even if > we provide the address, guests will still search the memory (or is it > just Linux that does that?)
Not with e.g. EFI, so there's a precedent of avoiding that (legacy) scan. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
