|
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH RFC] libxl: set 1GB MMIO hole for PVH
On 09/05/18 18:12, Juergen Gross wrote: > On 09/05/18 18:07, Roger Pau Monne wrote: >> This prevents page-shattering, by being able to populate the RAM >> regions below 4GB using 1GB pages, provided the guest memory size is >> set to a multiple of a GB. >> >> Note that there are some special and ACPI pages in the MMIO hole that >> will be populated using smaller order pages, but those shouldn't be >> accessed as often as RAM regions. > > Would it be possible somehow to put a potential firmware into that > 1GB region, too, if it needs any memory in high memory? Seabios e.g. > is taking the last RAM page of the guest for its hypercall page, which > will again shatter GB mappings. Clearly out of coffee, sorry. I manged to read HVM instead of PVH. Sorry for the noise. Juergen _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
|
 |
Lists.xenproject.org is hosted with RackSpace, monitoring our |