On Wed, Feb 28, 2018 at 6:38 PM, Hans-Joachim Kliemeck <i...@kliemeck.de> wrote: > > George Dunlap: > > /On 01/23/2018 04:06 AM, Simon Gaiser wrote:/ > /> George Dunlap:/ > />> Part of our solution to XSA-254 SP3 (aka "Meltdown") is to backport/ > />> the PVH mode from 4.10 to 4.9 and 4.8. This will first allow people/ > />> able to run PVH kernels to switch their PV guests directly to PVH/ > />> guests; and second, eventually enable the backport of patches which/ > />> will enable transparent changing of PV guests into PVH guests./ > />>/ > />> All of the hypervisor support seems to have existed already in 4.8, so/ > />> the only backports involve toolstack patches./ > />>/ > />> I've put up two trees for a first-cut backport of the PVH/ > />> functionality, to 4.9 and 4.8 here:/ > />>/ > />> git://xenbits.xen.org/people/gdunlap/xen.git/ > />>/ > />> Branches out/pvh-backport/4.8/v1 and out/pvh-backport/4.9/v1/ > />>/ > />> Below are the patches backported from 4.10 to 4.9 (23 patches total):/ > /> [...]/ > />/ > /> So future 4.8 releases will include the backports, right? Asking because/ > /> the AFAICS the 4.8.3-pre-shim-comet branch include them but staging-4.8/ > /> does not./ > // > /Some of us have had informal conversations about backporting PVH and/ > /Comet host/toolstack patches to 4.8, and a number of us think it's a/ > /good idea, but we haven't had an official discussion with all the/ > /stakeholders yet. We'll come back to it once more of the fires have/ > /been put out./ > // > /Feel free to remind us in a month or so if you still haven't seen any/ > /patches in the stable-4.8 branch. :-)/ > > Ok, thank you for the quick reply. In Qubes we are using PVH with 4.8 > using the old device_model_version=none config option. And changing this > would be much easier before release (So the change should be in our rc > now). Anyway if it's not decided yet, we will have to guess what ends up > in future 4.8.z releases. > > > > Hi, > > is there an update for the backports for 4.8 and 4.9? Or is there some > documentation available to see which parts are missing on 4.9 vs 4.10 (or > 4.8 vs 4.10) to get PVH running (device_model_version=none, ...)?
[CC'ing some more people] Have we come to any firm conclusion about backported PVH functionality for 4.8? I'd be in favor of merging the 4.8.3pre-shim-comet and 4.10.0-shim-comet branches into staging-4.8 and staging-4.10 respectively (assuming that's suitable). Are there any other fixes to PVH / PVshim hosting that we'd need to backport as well? -George _______________________________________________ Xen-devel mailing list Xenfirstname.lastname@example.org https://lists.xenproject.org/mailman/listinfo/xen-devel