Re: [PATCH v2 0/4] Remove 32-bit Xen PV guest support

From: Peter Zijlstra
Date: Thu Jul 02 2020 - 04:18:55 EST


On Wed, Jul 01, 2020 at 01:06:46PM +0200, Juergen Gross wrote:
> 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.

Hooray!!! Much thanks!