On 06/09/17 13:17, Olaf Hering wrote: > On Wed, Sep 06, Andrew Cooper wrote: > >> On 01/09/17 17:08, Olaf Hering wrote: >>> + /* No superpage in 1st 2MB due to VGA hole */ >>> + xc_sr_set_bit(0, &ctx->x86_hvm.restore.attempted_1g); >>> + xc_sr_set_bit(0, &ctx->x86_hvm.restore.attempted_2m); >> This is false for PVH guests. > How can I detect a PVH guest?
You (hopefully) can't, and it would be a layering violation if you could. The exact set of emulation available to/used by a guest is not relevant to how we move its memory. If a PVH guest has got MTRRs disabled, then it genuinely can run on an unshattered 1G superpage at 0. ~Andrew _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
