George T. Joseph (development) wrote:
Hi Jeff,
Two issues with the patch...
msi has to be disabled for the Marvell or the driver load will throw a
"nobody cared" message and eventually hang before discovering all the
drives.
Light I/O works fine but heavy I/O generates
"exception Emask 0x0 Sact 0xb Serr 0x0 action 0x2 frozen"
Then softreset and identify failures.
Adding AHCI_FLAG_NO_NCQ to the flags fixes this.
I've been running with both these changes over your original patch for a
few months now with no problems. This is on a very heavily used 4 drive
mdraid10 array.
I poked Marvell about this, we'll see what they say.
If I don't hear anything useful, I'll push the no-MSI, no-NCQ version
upstream.
Jeff
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