>>> On 12.06.17 at 17:11, <jbeul...@suse.com> wrote: > We place the trampoline no lower than at 256k, so we have ample space > to read the MBRs of BIOS disks into an aligned buffer right below the > trampoline (not doing so has been found to be a problem on a buggy BIOS > coming with a Skull Canyon NUC). To facilitate that move MBR reading > past EDD info retrieval. > > Also add a wrap check to the EDD info retrieval loop, to match that in > the MBR reading one. > > Reported-by: Paul Durrant <paul.durr...@citrix.com> > Signed-off-by: Jan Beulich <jbeul...@suse.com> > Tested-by: Paul Durrant <paul.durr...@citrix.com>
As to 4.9 inclusion, I think I should have mentioned right away that such a change of course isn't without risk: We're trying to work around a BIOS bug by relying on other information coming from the BIOS being correct / usable. Obviously there is the risk that this regresses with some other BIOS having a bug elsewhere. I'm therefore leaning towards suggesting to take this change only for master right now, and consider pulling it into the 4.9 branch in a couple of weeks time, when the patch has seen at least a little more testing on a wider set of systems. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
