Messages in this thread | | | Subject | Re: [PATCH v2 0/4] Remove 32-bit Xen PV guest support | From | Jürgen Groß <> | Date | Thu, 2 Jul 2020 17:45:23 +0200 |
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On 02.07.20 16:48, Brian Gerst wrote: > On Wed, Jul 1, 2020 at 7:07 AM Juergen Gross <jgross@suse.com> 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. > > One thing that you missed is removing VDSO_NOTE_NONEGSEG_BIT from > vdso32/note.S. With that removed there is no difference from the > 64-bit version.
Oh, this means we can probably remove arch/x86/xen/vdso.h completely.
> > Otherwise this series looks good to me.
Thanks,
Juergen
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