Hello, Shane.  Sorry about the delay.  Got caught up in other stuff.

Shane Huang wrote:
> Quoting Tejun:
>> Uh-oh, wait a bit. Nope. Until we figure out what the something
>> else
> is
>> and positively verify 64bit DMA works fine, the quirk stays in.
> Our HW engineer has confirmed that our SB600 SATA controller indeed
> has some MSI issue, and we do not have any workaround.
> The workaround "quirk_msi_intx_disable_bug" to SB700 SATA controller 
> can NOT work to SB600 SATA controller in my debug, while disablement
> to RS690 MSI in kernel source can fix it.

Hmmm... Okay.  Is the SB600 SATA controller culprit or the north bridge
- RS690?  If the former is the case, proper way to work around it is to

> As to the SB600 64 bit DMA capacity, do you have any methods to do 
> further verification? I do NOT find any problem in my debug after I
> disabled RS690 MSI in kernel 2.6.24-rc7.

The problem is that we didn't actually prove anything.  In the tests
you've done, pci=nomsi didn't fix the problem but disable_all_msi quirk
did.  pci=nomsi and disable_all_msi quirk are identical.  Also,
Srihari's problem was not reproduced, so currently we can't say much
from the test results.  Srihari, do you still have the system around?


To unsubscribe from this list: send the line "unsubscribe linux-ide" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Reply via email to