On 28/10/2019 09:06, Jan Beulich wrote: > On 28.10.2019 09:56, Sergey Dyasli wrote: >> Converting a guest from PV to PV-in-PVH makes the guest to have 384k >> less memory, which may confuse guest's balloon driver. This happens >> because Xen unconditionally reserves 640k - 1M region in E820 despite >> the fact that it's really a usable RAM in PVH boot mode. > > This is a PVH property according to your description and according > to my understanding. Why would you then ... > >> Fix this by skipping the region type change for pv-shim mode. > > ... alter behavior for shim mode only, rather than when booted in > PVH mode in general?
This is just me being cautious. My original email does have this text after --- "The condition can be relaxed to be just !pvh_boot if there are no plans to support VGA MMIO / ROMs for PVH guests." I wanted to check with the community about this first. Thanks, Sergey _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
