>>> On 09.01.15 at 03:29, <kevin.t...@intel.com> wrote: >> From: Jan Beulich [mailto:jbeul...@suse.com] >> Sent: Thursday, January 08, 2015 8:59 PM >> >> >>> On 08.01.15 at 13:49, <george.dun...@eu.citrix.com> wrote: >> > One question: where are these RMRRs typically located in memory? Are >> > they normally up in the MMIO region? Or can they occur anywhere (even >> > in really low areas, say, under 1GiB)? >> >> They would typically sit in the MMIO hole or below 1Mb; that latter case >> is particularly problematic as it might conflict with what we want to put >> there (BIOS etc). >> > > and later case is not solvable, which is then related to other discussion > whether > we want to fail such case
That latter case is partially solvable: The BIOS put below 1Mb has a permanent and a transient part. Dealing with the transient part overlapping an RMRR ought to be possible (e.g. by delaying the actual device assignment until the point where hvmloader knows it is safe to do). An overlap of the permanent part with an RMRR is of course fatal. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
