On Tue, Sep 26, 2017 at 02:02:56PM +0200, Juergen Gross wrote: > Long ago domains to be saved were limited to 1TB size due to the > migration stream v1 limitations which used a 32 bit value for the > PFN and the frame type (4 bits) leaving only 28 bits for the PFN. > > Migration stream V2 uses a 64 bit value for this purpose, so there > is no need to refuse saving (or migrating) domains larger than 1 TB. > > For 32 bit toolstacks there is still a size limit, as domains larger > than about 1TB will lead to an exhausted virtual address space of the > saving process. So keep the test for 32 bit, but don't base it on the > page type macros. As a migration could lead to the situation where a > 32 bit toolstack would have to handle such a large domain (in case the > sending side is 64 bit) the same test should be added for restoring a > domain. > > Signed-off-by: Juergen Gross <jgr...@suse.com>
I will leave this to Andrew. I don't really have an opinion here. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
