linux-kernel - Re: [PATCH 0/4] xen: various cleanups

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Date:   Tue, 7 Aug 2018 12:43:37 -0400
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Juergen Gross <jgross@...e.com>, linux-kernel@...r.kernel.org,
        xen-devel@...ts.xenproject.org, x86@...nel.org
Cc:     hpa@...or.com, tglx@...utronix.de, mingo@...hat.com
Subject: Re: [PATCH 0/4] xen: various cleanups

On 08/07/2018 11:21 AM, Juergen Gross wrote:
> On 07/08/18 16:00, Boris Ostrovsky wrote:
>> On 08/07/2018 09:10 AM, Juergen Gross wrote:
>>> On 17/07/18 14:01, Juergen Gross wrote:
>>>> Some Xen related cleanups:
>>>> - move some pv-only code from CONFIG_XEN to CONFIG_XEN_PV
>>>> - use CONFIG_XEN_PVHVM in Makefile instead of #ifdef around a complete source
>>>> - add SPDX identifier where missing
>>>>
>>>> Juergen Gross (4):
>>>>   xen: move pv irq related functions under CONFIG_XEN_PV umbrella
>>>>   xen: move pv specific parts of arch/x86/xen/mmu.c to mmu_pv.c
>>>>   xen: link platform-pci-unplug.o only if CONFIG_XEN_PVHVM
>>>>   xen: add SPDX identifier in arch/x86/xen files
>>>>
>>>>  arch/x86/entry/entry_32.S          |   8 +-
>>>>  arch/x86/entry/entry_64.S          |   8 +-
>>>>  arch/x86/xen/Makefile              |  41 ++++++--
>>>>  arch/x86/xen/efi.c                 |  14 +--
>>>>  arch/x86/xen/enlighten.c           |   2 +
>>>>  arch/x86/xen/enlighten_hvm.c       |   2 +
>>>>  arch/x86/xen/grant-table.c         |  25 +----
>>>>  arch/x86/xen/mmu.c                 | 188 +------------------------------------
>>>>  arch/x86/xen/mmu_pv.c              | 140 +++++++++++++++++++++++++++
>>>>  arch/x86/xen/p2m.c                 |   2 +
>>>>  arch/x86/xen/pci-swiotlb-xen.c     |   2 +
>>>>  arch/x86/xen/platform-pci-unplug.c |  18 +---
>>>>  arch/x86/xen/vdso.h                |   2 +
>>>>  arch/x86/xen/xen-pvh.S             |  15 +--
>>>>  include/xen/interface/memory.h     |   6 --
>>>>  include/xen/xen-ops.h              | 133 +++++++++++++++++---------
>>>>  16 files changed, 287 insertions(+), 319 deletions(-)
>>>>
>>> Boris, any objections?
>>
>> This series had my R-b, but I was waiting for x86 maintainers to ack the
>> first patch.
>>
>> But now that I looked at this again, I wonder whether
>>
>> +#ifdef CONFIG_XEN
>>  BUILD_INTERRUPT3(xen_hvm_callback_vector, HYPERVISOR_CALLBACK_VECTOR,
>>           xen_evtchn_do_upcall)
>> +#endif
>>
>>
>> and
>>
>> +#ifdef CONFIG_XEN
>>  apicinterrupt3 HYPERVISOR_CALLBACK_VECTOR \
>>      xen_hvm_callback_vector xen_evtchn_do_upcall
>> +#endif
>>
>>
>> should be under XEN_PVHVM
> Hmm, right. Do you want to change that while committing or should I send
> V2?


This still needs an ack from x86 folks. And include/xen/events.h may
need some additional ifdefery for xen_hvm_callback_vector().

So a v2 (for this patch only) would be good.

-boris