| Message ID | 20210819132617.10668-1-iwj@xenproject.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | SUPPORT.md: Explicitly desupport pvgrub1; and support grub-pv | expand |
On 19.08.21 15:26, Ian Jackson wrote: > We can no longer conveniently even test pv-grub1; osstest tests for > this have just been dropped from all Xen branches > (by osstest.git#8dee6e333622). > > This is without prejudice to its eventual removal. We should perhaps > proceed cautiously with that since it may be helpful for some old > guests. Probably, yes. OTOH keeping just old binaries should work without any problem. This might be worth considering. Especially as this would open up the path to drop the support of 32-bit libxenctrl/libxenguest support on 64-bit platforms in case we want to got that route. > Under the circumstances, I think this patch has to be a backport > candidate to all still-supported trees. > > CC: Juergen Gross <jgross@suse.com> > CC: Jan Beulich <jbeulich@suse.com>, > CC: Wei Liu <wl@xen.org> > Backport-requested-by: Ian Jackson <iwj@xenproject.org> > Signed-off-by: Ian Jackson <iwj@xenproject.org> > --- > SUPPORT.md | 22 ++++++++++++++++++++++ > 1 file changed, 22 insertions(+) > > diff --git a/SUPPORT.md b/SUPPORT.md > index 317392d8f3..9db027a85f 100644 > --- a/SUPPORT.md > +++ b/SUPPORT.md > @@ -832,6 +832,28 @@ OVMF firmware implements the UEFI boot protocol. > > Status, qemu-xen: Supported > > +### grub-pv aka pvgrub2 (guest bootloader) > + > + Status: Supported > + > +Support in upstream GRUB2 for running in Xen PV, to booting Xen PV > +guests. > + > +Collaboration (and security coordination) and fixes will be provided > +by the Xen Project, as needed. > + > +### x86/HVM pvgrub1 (aka stubdom pv-grub) s/HVM/PV/ > + > + Status: Obsolescent, limited support > + > +GRUB1 compiled with minios and Xen stubdom, to run in guest context. > +This is provided in the Xen source distribution for the benefit of > +very old guests; it is no longer tested, but build and functionality > +fixes are welcome. > + > +pvgrub1 is not security-supported. However, it runs in guest context, > +so there should be no implications for host security. > + Juergen
Juergen Gross writes ("Re: [PATCH] SUPPORT.md: Explicitly desupport pvgrub1; and support grub-pv"):
> Probably, yes. OTOH keeping just old binaries should work without
> any problem. This might be worth considering.
Mmm.
> > +### x86/HVM pvgrub1 (aka stubdom pv-grub)
>
> s/HVM/PV/
Oops, fixed in my tree.
Ian.
diff --git a/SUPPORT.md b/SUPPORT.md index 317392d8f3..9db027a85f 100644 --- a/SUPPORT.md +++ b/SUPPORT.md @@ -832,6 +832,28 @@ OVMF firmware implements the UEFI boot protocol. Status, qemu-xen: Supported +### grub-pv aka pvgrub2 (guest bootloader) + + Status: Supported + +Support in upstream GRUB2 for running in Xen PV, to booting Xen PV +guests. + +Collaboration (and security coordination) and fixes will be provided +by the Xen Project, as needed. + +### x86/HVM pvgrub1 (aka stubdom pv-grub) + + Status: Obsolescent, limited support + +GRUB1 compiled with minios and Xen stubdom, to run in guest context. +This is provided in the Xen source distribution for the benefit of +very old guests; it is no longer tested, but build and functionality +fixes are welcome. + +pvgrub1 is not security-supported. However, it runs in guest context, +so there should be no implications for host security. + # Format and definitions This file contains prose, and machine-readable fragments.
We can no longer conveniently even test pv-grub1; osstest tests for this have just been dropped from all Xen branches (by osstest.git#8dee6e333622). This is without prejudice to its eventual removal. We should perhaps proceed cautiously with that since it may be helpful for some old guests. Under the circumstances, I think this patch has to be a backport candidate to all still-supported trees. CC: Juergen Gross <jgross@suse.com> CC: Jan Beulich <jbeulich@suse.com>, CC: Wei Liu <wl@xen.org> Backport-requested-by: Ian Jackson <iwj@xenproject.org> Signed-off-by: Ian Jackson <iwj@xenproject.org> --- SUPPORT.md | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+)