On 04/12/12 10:53, Colin Ian King wrote:
Jeff,
I've updated the bug. It looks like the _SRS control can be passed in
two types of buffer (as created by the associated _CRS). However, the
_SRS assumes it has the the largest buffer when it creates the DRQL
and DMAC byte fields, and hence it falls off the end of the smaller
buffer.
I am not sure if the _SRS fails to execute the SIRQ (0x02, IRQL) when
it is given the smaller buffer or not; I'd have to produce a debug
kernel to trace the AML op code execution to figure this out. As it
stands, if this fails to execute then we may have some PCI
misconfiguration going on. If it does execute, we are OK, but we get
this kernel error being reported on each S3 cycle.
As it stands, I think it would be prudent to see if the firmware can
be fixed. Realistically we can't quirk around this bug.
I'm seeing a similar failure (on a different machine) with a different
field ([IRQE]). What's the best route to getting these bugs fixed by
Dell in the firmware?
Colin
On 03/12/12 22:13, Jeff Lane wrote:
Could someone take a look at this log from FWTS:
https://launchpadlibrarian.net/122454479/results.log
That is part of this bug:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1076979
This was run on a system and while the system did indeed suspend and
resume 30 times, the test overall failed because of a bunch of the
following errors:
FAILED [CRITICAL] KlogACPIErrorFieldexceedsBuffer: Test 1, CRITICAL
Kernel message: [77191.628764]
ACPI Error: Field [DRQL] at 144 exceeds Buffer [NULL] size 104 (bits)
(20110623/dsopcode-236)
ADVICE: The field exceeds the allocated buffer size. This can lead to
unexpected results when
fetching data outside this region.
FAILED [HIGH] KlogACPIErrorMethodExecutionParse: Test 1, HIGH Kernel
message: [77191.628769] ACPI
Error: Method parse/execution failed [\_SB_.PCI0.SBRG.LPTE._SRS] (Node
ffff88002cfc0488),
AE_AML_BUFFER_LIMIT (20110623/psparse-536)
ADVICE: Method failed: ResourceSourceIndex is present but ResourceSource
is not.
So ultimately, what I'm interested in is if this is a misconfiguration
in Klog or something, or if this will legitimately impact the stability
and usability of a system, thus failing certification.
Thanks
Jeff
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