linux-kernel - Re: [PATCH v2 0/6] improve AP queue reset processing

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Message-ID: <e51d751f-54c1-b292-7c86-e0b077f138c4@linux.ibm.com>
Date:   Fri, 20 Jan 2023 09:02:04 -0500
From:   Anthony Krowiak <akrowiak@...ux.ibm.com>
To:     Christian Borntraeger <borntraeger@...ibm.com>,
        linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Cc:     jjherne@...ux.ibm.com, freude@...ux.ibm.com, pasic@...ux.ibm.com,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>
Subject: Re: [PATCH v2 0/6] improve AP queue reset processing


On 1/20/23 5:25 AM, Christian Borntraeger wrote:
> Am 18.01.23 um 21:31 schrieb Tony Krowiak:
>> 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.
>>   Change log v1 => v2:
>> -------------------
>> Remove patch 7/7 to restore original behavior since we don't know 
>> whether
>> interrupts are disabled when an unexpected response code is returned 
>> from
>> ZAPQ. (Halil)
>>
>> Tony Krowiak (6):
>>    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
>>
>>   drivers/s390/crypto/vfio_ap_ops.c | 104 +++++++++++++++++++++---------
>>   1 file changed, 72 insertions(+), 32 deletions(-)
>>
>
> Thanks applied and queued for CI and regression runs. Will likely go 
> via s390 tree.


Got it, thanks.