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 <[email protected]> >>> 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
