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

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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]

> 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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