Re: [regression] Bug 217114 - Tiger Lake SATA Controller not operating correctly [bisected]

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On 03.03.23 08:10, Linux regression tracking (Thorsten Leemhuis) wrote:
> Hi, this is your Linux kernel regression tracker.
> 
> I noticed a regression report in bugzilla.kernel.org that apparently
> affects 6.2 and later as well as 6.1.13 and later, as it was already
> backported there.
> 
> As many (most?) kernel developer don't keep an eye on bugzilla, I
> decided to forward the report by mail. Quoting from
> https://bugzilla.kernel.org/show_bug.cgi?id=217114 :
> 
>>  emmi@xxxxxxxxxxx 2023-03-02 11:25:00 UTC
>>
>> As per kernel problem found in https://bbs.archlinux.org/viewtopic.php?id=283906 ,
>>
>> Commit 104ff59af73aba524e57ae0fef70121643ff270e
> 
> [FWIW: That's "ata: ahci: Add Tiger Lake UP{3,4} AHCI controller" from
> Simon Gaiser]

BTW, there is one thing I wondered after sending above mail: was it
really wise to merge this to mainline two days before 6.2 was released?
Yes, the change subject's makes it sounds like this is a hardware
enablement, but the `Mark the Tiger Lake UP{3,4} AHCI controller as
"low_power"` at the beginning of the change description shines a
different light on it.

Ciao, Thorsten

>> seems to have broken Intel Tiger Lake SATA controllers in a way that prevents boot, as the sysroot partition will not be found. 
>>
>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=104ff59af73aba524e57ae0fef70121643ff270e
>>
>> [tag] [reply] [−]
>> Private
>> Comment 1 schwagsucks@xxxxxxxxx 2023-03-02 17:31:53 UTC
>>
>> As some people in the reference arch forum post reported this seems to have started in 6.1.13.  6.1.12 loads as expected.  
>>
>> The problem is the sata disks can not be recognized any longer which is why the reported sysroot partition can't be found.  
>>
>> My primary disk is nvme and as long as I remove all sata references from my fstab I can boot but then can't mount the device partitions because the devices are not present in /dev.  
>>
>> Any attempts to boot with a sata disk in fstab results in a boot failure with emergency shell.
>>
>> [tag] [reply] [−]
>> Private
>> Comment 2 schwagsucks@xxxxxxxxx 2023-03-02 19:31:28 UTC
>>
>> I can provide any details required
>>
>> My sata controller:
>> 10000:e0:17.0 SATA controller: Intel Corporation Tiger Lake-LP SATA Controller (rev 20) (prog-if 01 [AHCI 1.0])
>> 	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
>> 	Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>> 	Latency: 0
>> 	Interrupt: pin A routed to IRQ 146
>> 	Region 0: Memory at 50100000 (32-bit, non-prefetchable) [size=8K]
>> 	Region 1: Memory at 50102800 (32-bit, non-prefetchable) [size=256]
>> 	Region 5: Memory at 50102000 (32-bit, non-prefetchable) [size=2K]
>> 	Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
>> 		Address: fee01000  Data: 0000
>> 	Capabilities: [70] Power Management version 3
>> 		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold-)
>> 		Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
>> 	Capabilities: [a8] SATA HBA v1.0 BAR4 Offset=00000004
>> 	Kernel driver in use: ahci
>>
> 
> 
> See the ticket for more details.
> 
> 
> [TLDR for the rest of this mail: I'm adding this report to the list of
> tracked Linux kernel regressions; the text you find below is based on a
> few templates paragraphs you might have encountered already in similar
> form.]
> 
> BTW, let me use this mail to also add the report to the list of tracked
> regressions to ensure it's doesn't fall through the cracks:
> 
> #regzbot introduced: 104ff59af73a
> https://bugzilla.kernel.org/show_bug.cgi?id=217114
> #regzbot title: ata: ahci: Tiger Lake SATA Controller not operating
> correctly
> #regzbot ignore-activity
> 
> This isn't a regression? This issue or a fix for it are already
> discussed somewhere else? It was fixed already? You want to clarify when
> the regression started to happen? Or point out I got the title or
> something else totally wrong? Then just reply and tell me -- ideally
> while also telling regzbot about it, as explained by the page listed in
> the footer of this mail.
> 
> Developers: When fixing the issue, remember to add 'Link:' tags pointing
> to the report (e.g. the buzgzilla ticket and maybe this mail as well, if
> this thread sees some discussion). See page linked in footer for details.
> 
> Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
> --
> Everything you wanna know about Linux kernel regression tracking:
> https://linux-regtracking.leemhuis.info/about/#tldr
> If I did something stupid, please tell me, as explained on that page.



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