Re: [PATCH] fix qla2xxx regression on sparc64

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> On Aug 21, 2020, at 12:49 PM, René Rebe <rene@xxxxxxxxxxxx> wrote:
> 
> Hi,
> 
>> On 21. Aug 2020, at 17:17, Himanshu Madhani <himanshu.madhani@xxxxxxxxxx> wrote:
>> 
>> Hi Rene, 
>> 
>>> On Aug 21, 2020, at 9:47 AM, René Rebe <rene@xxxxxxxxxxxx> wrote:
>>> 
>>> Hey,
>>> 
>>>> On 21. Aug 2020, at 15:49, Himanshu Madhani <himanshu.madhani@xxxxxxxxxx> wrote:
>>>> 
>>>> Hi Rene,
>>>> 
>>>> 
>>>>> On Aug 21, 2020, at 7:28 AM, Rene Rebe <rene@xxxxxxxxxxxxx> wrote:
>>>>> 
>>>>> 
>>>>> Commit 9a50aaefc1b896e734bf7faf3d085f71a360ce97 in 2014 broke
>>>>> qla2xxx on sparc64, e.g. as in the Sun Blade 1000 / 2000.
>>>>> Unbreak by fixing endianess in nvram firmware defaults
>>>>> initialization.
>>>>> 
>>>> 
>>>> I could not find this commit 9a50aaefc1b896e734bf7faf3d085f71a360ce97 in Linus or SCSI tree. 
>>> 
>>> Did I copy this wrong?
>>> 	https://urldefense.com/v3/__https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/scsi/qla2xxx?id=9a50aaefc1b896e734bf7faf3d085f71a360ce97__;!!GqivPVa7Brio!L6-irbVsNXqZh_TSb_WyaBZ1S3Evo18GqWr8hX2Z-tNl3rZbWv0orEt7Igy_n_89mkIf$ 
>>> 
>> 
>> Yes. The actual commit that change those lines is following 
>> 
>> https://urldefense.com/v3/__https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=98aee70d19a7e3203649fa2078464e4f402a0ad8__;!!GqivPVa7Brio!Jsf7iuXhoEimJ56ynA6RrwNm3nkfk3ATaMfNVTUhnU9-NfIZT3eVBiXtsQHXXzu7NMDs$ 
>> 
>> So your fixes tag should be 
>> 
>> Fixes: 98aee70d19a7e ("qla2xxx: Add endianizer to max_payload_size modifier.”)
>> 
>> And looking at the changes, I see that the frame_payload_size was changed to __le16 so this should not cause regression in your env. 
>> 
>> Interestingly this patch had fixed the regression and was originally tested on SunBlade-1000
>> 
>> https://urldefense.com/v3/__https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4e08df3f91837656c36712f559d5ce8d80852760__;!!GqivPVa7Brio!Jsf7iuXhoEimJ56ynA6RrwNm3nkfk3ATaMfNVTUhnU9-NfIZT3eVBiXtsQHXX5pZx4bu$ 
>> 
>> Can you try reverting 98aee70d19a7e and retest to confirm that this patch indeed introduced regression for you. 
> 
> Well, linux kernels since 3.17 did not work on this adapter on sparc64:
> 
> and I reverted the whole 9a50aaefc1b896e734bf7faf3d085f71a360ce97 and factored the changes out and tested what I sent with 5..8.1.
> 
> This was also reported back in the say, but somehow never applied, ..?
> 
> 	https://urldefense.com/v3/__https://lore.kernel.org/lkml/86A17A977688E04689F40F6B1EC20EC601940E06A9@xxxxxxxxxxxxxxxx/__;!!GqivPVa7Brio!Jsf7iuXhoEimJ56ynA6RrwNm3nkfk3ATaMfNVTUhnU9-NfIZT3eVBiXtsQHXX9w-_N_o$ 
> 

Wow. This should have been done the moment Author acknowledged the revert. I am stumped that we are still talking about this revert after 5+ yrs and its not done. Would you please send just plain revert request for commit 98aee70d19a7e rather than reverting whole merge window patch.

> Regards,
> 	René
> 
>>>> Can you please provide details of the commit which introduced this regression.
>>> 
>>> See above, there was plenty of more reworks and code shuffling, and the quoted commit is also a condensed changes of other /14 series and other scsi work, …
>>> 
>>> Have a nice weekend,
>>> 	René
>>> 
>>>> Also when you
>>>> resubmit this patch please use Fixes tag. See documentation here for the correct format.
>>>> 
>>>> https://urldefense.com/v3/__https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst__;!!GqivPVa7Brio!L6-irbVsNXqZh_TSb_WyaBZ1S3Evo18GqWr8hX2Z-tNl3rZbWv0orEt7Igy_n620C3iF$ 
>>>> 
>>>>> Signed-off-by: René Rebe <rene@xxxxxxxxxxxx>
>>>>> 
>>>>> --- linux-5.8/drivers/scsi/qla2xxx/qla_init.c.vanilla	2020-08-21 09:55:18.600926737 +0200
>>>>> +++ linux-5.8/drivers/scsi/qla2xxx/qla_init.c	2020-08-21 09:57:35.992926885 +0200
>>>>> @@ -4603,18 +4603,18 @@
>>>>> 			nv->firmware_options[1] = BIT_7 | BIT_5;
>>>>> 			nv->add_firmware_options[0] = BIT_5;
>>>>> 			nv->add_firmware_options[1] = BIT_5 | BIT_4;
>>>>> -			nv->frame_payload_size = 2048;
>>>>> +			nv->frame_payload_size = cpu_to_le16(2048);
>>>>> 			nv->special_options[1] = BIT_7;
>>>>> 		} else if (IS_QLA2200(ha)) {
>>>>> 			nv->firmware_options[0] = BIT_2 | BIT_1;
>>>>> 			nv->firmware_options[1] = BIT_7 | BIT_5;
>>>>> 			nv->add_firmware_options[0] = BIT_5;
>>>>> 			nv->add_firmware_options[1] = BIT_5 | BIT_4;
>>>>> -			nv->frame_payload_size = 1024;
>>>>> +			nv->frame_payload_size = cpu_to_le16(1024);
>>>>> 		} else if (IS_QLA2100(ha)) {
>>>>> 			nv->firmware_options[0] = BIT_3 | BIT_1;
>>>>> 			nv->firmware_options[1] = BIT_5;
>>>>> -			nv->frame_payload_size = 1024;
>>>>> +			nv->frame_payload_size = cpu_to_le16(1024);
>>>>> 		}
>>>>> 
>>>>> 		nv->max_iocb_allocation = cpu_to_le16(256);
>>>>> 
>>>>> -- 
>>>>> René Rebe, ExactCODE GmbH, Lietzenburger Str. 42, DE-10789 Berlin
>>>>> https://urldefense.com/v3/__https://exactcode.com__;!!GqivPVa7Brio!KU2euUgVJIRXqzU0RdhkxvMdgtotnSUfdk9KmK73n26lyGlTMhmSvyadcgXXxI-1EV4u$  | https://urldefense.com/v3/__https://t2sde.org__;!!GqivPVa7Brio!KU2euUgVJIRXqzU0RdhkxvMdgtotnSUfdk9KmK73n26lyGlTMhmSvyadcgXXxAAjd8CY$  | https://urldefense.com/v3/__https://rene.rebe.de__;!!GqivPVa7Brio!KU2euUgVJIRXqzU0RdhkxvMdgtotnSUfdk9KmK73n26lyGlTMhmSvyadcgXXxDUjMdad$ 
>>>> 
>>>> --
>>>> Himanshu Madhani	 Oracle Linux Engineering
>>>> 
>>> 
>>> -- 
>>> ExactCODE GmbH, Lietzenburger Str. 42, DE-10789 Berlin, https://urldefense.com/v3/__https://exactcode.com__;!!GqivPVa7Brio!L6-irbVsNXqZh_TSb_WyaBZ1S3Evo18GqWr8hX2Z-tNl3rZbWv0orEt7Igy_n-uIVWXr$ 
>>> https://urldefense.com/v3/__https://exactscan.com__;!!GqivPVa7Brio!L6-irbVsNXqZh_TSb_WyaBZ1S3Evo18GqWr8hX2Z-tNl3rZbWv0orEt7Igy_n2dniKkK$  | https://urldefense.com/v3/__https://ocrkit.com__;!!GqivPVa7Brio!L6-irbVsNXqZh_TSb_WyaBZ1S3Evo18GqWr8hX2Z-tNl3rZbWv0orEt7Igy_n-v2wVJD$  | https://urldefense.com/v3/__https://t2sde.org__;!!GqivPVa7Brio!L6-irbVsNXqZh_TSb_WyaBZ1S3Evo18GqWr8hX2Z-tNl3rZbWv0orEt7Igy_n9g--eFu$  | https://urldefense.com/v3/__https://rene.rebe.de__;!!GqivPVa7Brio!L6-irbVsNXqZh_TSb_WyaBZ1S3Evo18GqWr8hX2Z-tNl3rZbWv0orEt7Igy_nxllUxx0$
>> 
>> --
>> Himanshu Madhani	 Oracle Linux Engineering
>> 
> 
> -- 
> ExactCODE GmbH, Lietzenburger Str. 42, DE-10789 Berlin, https://urldefense.com/v3/__https://exactcode.com__;!!GqivPVa7Brio!Jsf7iuXhoEimJ56ynA6RrwNm3nkfk3ATaMfNVTUhnU9-NfIZT3eVBiXtsQHXX6haBk6D$ 
> https://urldefense.com/v3/__https://exactscan.com__;!!GqivPVa7Brio!Jsf7iuXhoEimJ56ynA6RrwNm3nkfk3ATaMfNVTUhnU9-NfIZT3eVBiXtsQHXX4W9vLaa$  | https://urldefense.com/v3/__https://ocrkit.com__;!!GqivPVa7Brio!Jsf7iuXhoEimJ56ynA6RrwNm3nkfk3ATaMfNVTUhnU9-NfIZT3eVBiXtsQHXX04ZQeL4$  | https://urldefense.com/v3/__https://t2sde.org__;!!GqivPVa7Brio!Jsf7iuXhoEimJ56ynA6RrwNm3nkfk3ATaMfNVTUhnU9-NfIZT3eVBiXtsQHXX6DRH0bV$  | https://urldefense.com/v3/__https://rene.rebe.de__;!!GqivPVa7Brio!Jsf7iuXhoEimJ56ynA6RrwNm3nkfk3ATaMfNVTUhnU9-NfIZT3eVBiXtsQHXXz0D-Wul$

--
Himanshu Madhani	 Oracle Linux Engineering





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