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Re: [PATCH 0/2] xen: Fix PV-only build
- To: Juergen Gross <jgross@xxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 6 Aug 2026 13:31:53 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Jason Andryuk <jason.andryuk@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, x86@xxxxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxx>
- Delivery-date: Thu, 06 Aug 2026 11:32:03 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 06.08.2026 12:55, Juergen Gross wrote:
> On 06.08.26 03:52, Jason Andryuk wrote:
>> Allow disabling XEN_PVHVM for a PV-only. A stub in the event channel
>> code needs to be fixed first.
>>
>> Jason Andryuk (2):
>> xen/events: Fix xen_set_upcall_vector stub
>> xen/Kconfig: select XEN_PVHVM
>>
>> arch/x86/xen/Kconfig | 8 +++++---
>> drivers/xen/events/events_base.c | 2 +-
>> 2 files changed, 6 insertions(+), 4 deletions(-)
>>
>
> I did a comparison of a kernel built with your patches disabling XEN_PVHVM
> and my patches with XEN_PVHVM_GUEST disabled.
>
> The kernel built with my patches is 6 bytes smaller than the one with your
> patches.
Isn't this a sign of something else needing tweaking, somewhere?
> So I don't see any reason to take your patches, which conflict with mine,
> especially as my patches have a negative diffstat on source level, too.
Hmm, Jason's patches look to move things into a more adequate direction,
though. In which case I think a negative diffstat becomes an irrelevant
argument?
Jan
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