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Re: [PATCH RFC 0/6] x86/ioapic: fix edge triggered interrupt migration
- To: Roger Pau Monné <roger.pau@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Fri, 20 May 2022 14:46:39 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>, Paul Durrant <paul@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Fri, 20 May 2022 12:46:49 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 20.05.2022 14:36, Roger Pau Monné wrote:
> On Thu, Apr 21, 2022 at 03:21:08PM +0200, Roger Pau Monne wrote:
>> Hello,
>>
>> Following series attempts to solve the issue with IO-APIC edge triggered
>> interrupts seeing an inconsistent RTE or IRTE when injected while being
>> migrated.
>>
>> It's currently RFC because some patches have post commit message notes,
>> and because I'm not sure if patch 1 is really needed. I originally had
>> the idea of suggesting to only backport patch 1 in order to fix the
>> issue in older releases, while leaving the more complex (and thus
>> error prone) IOMMU changes in unstable. Note however that patch 1 is
>> just a workaround to prevent interrupts seeing inconsistent entries
>> while being updated, masking the entry just makes the warning go away,
>> but the interrupt will be lost.
>
> Ping?
Sorry, the usual thing with RFCs: They take lower priority than other
work items. This series is certainly the first of the several pending
RFC series which I mean to get to, but it's hard to predict when this
would be.
Jan
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