linux-kernel - Re: [PATCH 0/7] improve AP queue reset processing

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Message-ID: <be4eda2c-5dea-4dd3-245f-f7effd3fa534@linux.ibm.com>
Date:   Wed, 14 Dec 2022 14:10:39 -0500
From:   Anthony Krowiak <akrowiak@...ux.ibm.com>
To:     "Jason J. Herne" <jjherne@...ux.ibm.com>,
        linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Cc:     freude@...ux.ibm.com, borntraeger@...ibm.com, cohuck@...hat.com,
        mjrosato@...ux.ibm.com, pasic@...ux.ibm.com,
        alex.williamson@...hat.com, kwankhede@...dia.com,
        fiuczy@...ux.ibm.com
Subject: Re: [PATCH 0/7] improve AP queue reset processing


On 12/14/22 10:16 AM, Jason J. Herne wrote:
>
> On 12/13/22 10:44 AM, Tony Krowiak wrote:
>> This series introduces several improvements to the function that 
>> performs
>> AP queue resets:
>>
>> * Breaks up reset processing into multiple smaller, more concise 
>> functions.
>>
>> * Use TAPQ to verify completion of a reset in progress rather than 
>> mulitple
>>    invocations of ZAPQ.
>>
>> * Check TAPQ response codes when verifying successful completion of 
>> ZAPQ.
>>
>> * Fix erroneous handling of some error response codes.
>>
>> * Increase the maximum amount of time to wait for successful 
>> completion of
>>    ZAPQ.
>>
>> * Always clean up IRQ resources when the ZAPQ response code indicates an
>>    error.
>>
>> * Consider reset complete when ZAPQ response code indicates the 
>> adapter to
>>    which a queue is connected is deconfigured. All queues associated 
>> with an
>>    adapter are reset when it is deconfigured.
>>
>> Tony Krowiak (7):
>>    s390/vfio-ap: verify reset complete in separate function
>>    s390/vfio_ap: check TAPQ response code when waiting for queue reset
>>    s390/vfio_ap: use TAPQ to verify reset in progress completes
>>    s390/vfio_ap: verify ZAPQ completion after return of response code
>>      zero
>>    s390/vfio_ap: fix handling of error response codes
>>    s390/vfio_ap: increase max wait time for reset verification
>>    s390/vfio_ap: always clean up IRQ resources
>>
>>   drivers/s390/crypto/vfio_ap_ops.c | 106 ++++++++++++++++++++----------
>>   1 file changed, 73 insertions(+), 33 deletions(-)
>
>
> This series largely matches what I've already reviewed. I like the way 
> you broke this up, it does a better job telling the story.
>
> Here's my R-b for the entire series.
> Reviewed-by: Jason J. Herne <jjherne@...ux.ibm.com>


Thanks for the review Jason.