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SubjectRe: Status of Marvell SATA driver (was Re: Trying latest sata_mv - and getting freeze)
>>>>>My hardware is SMP Supermicro with 6 disks on
>>>>>Marvell MV88SX6081 8-port SATA II PCI-X Controller (rev 03)
>>>>>and the sata_mv.c is version 0.25 dated 22 Oct 2005
>>>>>
>>>>>The thing works with "old" mvsata340 driver, but the "new" kernel with
>>>>>your driver freezes when it starts to probe disks. Even Magic SysRq
>>>>>does not work. The last lines I see on screen are like this:
>>>>>
>>>>>sata_mv version 0.25
>>>>>ACPI: PCI Interrupt 0000:02:03.0[A] -> GSI 56 (level, low) -> IRQ 185
>>>>>sata_mv(0000:02:03.0) 32 slots 8 ports unknown mode IRQ via MSI
>>>>>ata1: SATA max UDMA/133 cmd 0x0 ctl 0xF8C22120 bmdma 0x0 irq 185
>>>>>ata2: .... <same things> 0xF8C24120 ...
>>>>>...
>>>>>ata8: .... <same thing> 0xF8C38120 ...
>>>>>ATA: abnormal status 0x80 on port 0xF8C2211C
>>>>>... <five more lines identical to the above>
>>>>>ata1: dev 0 ATA-7, max UDMA/133, 781422768 sectors: LBA48
>>>>>
>>>>>- and at this point it freezes hard.
>>>>>Any suggestions for me? Any information I can collect to help
>>>>>troubleshooting?
>>>
>>>[...]
>>>
>>>
>>>>In the meantime, try turning off SMP and seeing if that makes a
>>>>difference. There still might be a problem with the spinlocks and if so
>>>>it should go away in uniprocessor mode.
>>>
>>>'nosmp' makes no difference.
>>
>>
>>Booting with nosmp isn't enough, you need to compile the kernel with
>>CONFIG_SMP turned off. Otherwise the spinlocks will still be used and
>>could cause a hard hang.
>
>
> Yeah, that was it! It boots with the kernel compiled for UP.
> (did not yet have a chance to check how it works).
> Any chance that somebody competent would fix the driver for SMP?

Umm, that sounds freakingly familiar to what I just had with sata_nv...
Try "noapic" in smp mode, will that help?

And just in case, did you try 2.6.14-rc5? That was the kernel that fixed
my similar problem "out-of-the-box".

Regards,
Vladimir
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