Messages in this thread | | | From | Andi Kleen <> | Subject | Re: [PATCH 0/2] Remove 32-bit Xen PV guest support | Date | Mon, 15 Jul 2019 09:34:00 -0700 |
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Juergen Gross <jgross@suse.com> writes:
> The long term plan has been to replace Xen PV guests by PVH. The first > victim of that plan are now 32-bit PV guests, as those are used only > rather seldom these days. Xen on x86 requires 64-bit support and with > Grub2 now supporting PVH officially since version 2.04 there is no > need to keep 32-bit PV guest support alive in the Linux kernel. > Additionally Meltdown mitigation is not available in the kernel running > as 32-bit PV guest, so dropping this mode makes sense from security > point of view, too.
Normally we have a deprecation period for feature removals like this. You would make the kernel print a warning for some releases, and when no user complains you can then remove. If a user complains you can't.
-Andi
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