On 19/12/14 09:11, Jan Beulich wrote: >>>> On 18.12.14 at 19:51, <andrew.coop...@citrix.com> wrote: >> On 18/12/14 18:27, Roger Pau Monne wrote: >>> Prevent Dom0 from accessing HPET MMIO region by adding it to the list of >>> denied memory regions. >>> >>> Signed-off-by: Roger Pau Monné <roger....@citrix.com> >>> Cc: Jan Beulich <jbeul...@suse.com> >>> Cc: Andrew Cooper <andrew.coop...@citrix.com> >> Apologies that this reply is split between patch 0 and 2 - I replied to >> your cover letter before reading this patch. >> >> Denying access is only valid if acpi_table_hpet.flags & >> ACPI_HPET_PAGE_PROTECT4 is true. > Having just checked (as an example) the most modern Intel box I > have direct access to, I wonder how many systems actually supply > other than 0 here. Perhaps we ought to at once add a command > line option to trigger the denial?
I also can't find a server which sets this flag. I wonder how many systems actually have other things sitting in the remainder of the page. ~Andrew _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel