On 07/14/2015 11:17 PM, Jiang Liu wrote: > On 2015/7/15 1:22, Joseph Salisbury wrote: >> On 07/13/2015 10:42 PM, Jiang Liu wrote: >>> On 2015/7/14 3:36, Joseph Salisbury wrote: >>>> Hello Jiang, >>>> >>>> A kernel bug report was opened against Ubuntu [0]. It was found that >>>> reverting the following commit resolves this bug: >>>> >>>> commit cd68f6bd53cf89d1d5ed889b8af65e9c3574a079 >>>> Author: Jiang Liu <jiang....@linux.intel.com> >>>> Date: Mon Oct 27 16:11:52 2014 +0800 >>>> >>>> x86, irq, acpi: Get rid of special handling of GSI for ACPI SCI >>>> >>>> The regression was introduced as of v3.19-rc1. >>>> >>>> I was hoping to get your feedback, since you are the patch author. Do >>>> you think gathering any additional data will help diagnose this issue, >>>> or would it be best to submit a revert request? >>> Hi Joseph, >>> Sorry for the trouble. It would be great if we could get >>> more information about the bug, such as bug report info, dmesg and >>> acpidump from the reporting system. >>> Thanks! >>> Gerry >> Comments 3 and 4 have the requested information in the bugzilla bug: >> https://bugzilla.kernel.org/show_bug.cgi?id=101301 >> >> Thanks again for the help! > Hi Joseph, > According to my investigation, it's an ACPI BIOS issue instead > of a kernel bug. But it's actually a regression. Now we enforce stricter > check for ACPI SCI interrupt, which exposes an implementation flaw in > the virtual BIOS. > > I have posted the analysis at > https://bugzilla.kernel.org/show_bug.cgi?id=101301 > But I have no account at launchpad, so could you please help to copy > the message to launchpad? > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1440072 > > Thanks! > Gerry Thanks for the analysis and feedback, Gerry. I'll update the launchpad bug with your info.
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