mbox series

[0/7] improve AP queue reset processing

Message ID 20221213154437.15480-1-akrowiak@linux.ibm.com
Headers
Series improve AP queue reset processing |

Message

Anthony Krowiak Dec. 13, 2022, 3:44 p.m. UTC 
  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(-)

Comments

Jason J. Herne Dec. 14, 2022, 3:16 p.m. UTC | #1 
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@linux.ibm.com>
Anthony Krowiak Dec. 14, 2022, 7:10 p.m. UTC | #2 
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@linux.ibm.com>


Thanks for the review Jason.