On 19/12/14 08:04, Roger Pau Monné wrote: > Hello, > > El 18/12/14 a les 19.51, Andrew Cooper ha escrit: >> 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. > Thanks, if ACPI_HPET_PAGE_PROTECT4 is set then we can prevent access to > the full page and if ACPI_HPET_PAGE_PROTECT64 is set we can prevent > access to this page and the adjacent 60KB (15 pages). Will send an > updated version. > > Roger. >
ACPI_HPET_PAGE_PROTECT64 stems from ia64 land, where pages can be 64k. I believe it can safely be ignored for x86, or perhaps used to imply ACPI_HPET_PAGE_PROTECT4 ~Andrew _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
