Hi, On 6/7/21 9:18 PM, Hans de Goede wrote: > Hi, > > On 6/7/21 6:08 PM, Mika Westerberg wrote: >> Hi, >> >> Tried now on ADL-P and TGL systems and the _OSC still works properly. >> >> Thanks Hans for fixing! >> >> Feel free to add my Tested-by. > > Thank you for testing, unfortunately so far from the comments here: > > https://bugzilla.kernel.org/show_bug.cgi?id=213023 > > it seems that my patch does not help resolve the issues caused > by commit 719e1f561afb ("ACPI: Execute platform _OSC also with query > bit clear"), where as reverting that commit does resolve them :| > > Does anyone have any other ideas how to fix this ? The reporter who has done the bisect has commented out the new/second _OSC call and that fixes things for them. So I've written a new fix (attached), note just as before this is untested ATM. Mika, if you can test this one (it replaces the previous one) on machines with native USB4 support to check those don't regress then that would be great. I've asked the various reporters from the 2 bugzilla's for this to also test this new patch. I'll let you know how that goes. Regards, Hans >> On Mon, Jun 07, 2021 at 01:01:59PM +0000, Mario Limonciello wrote: >>> Mika, >>> >>> Can you have a try and make sure this modification still works properly >>> on the series in the hardware we originally did it for? >>> __________________________________________________________________ >>> >>> From: Rafael J. Wysocki >>> Sent: Monday, June 7, 2021 6:13:21 AM >>> To: Hans de Goede >>> Cc: Rafael J . Wysocki ; Mario Limonciello >>> ; linux-acpi >>> >>> Subject: Re: Some SSDT tables are not loading with kernel >= 5.12 >>> >>> On Mon, Jun 7, 2021 at 12:05 PM Hans de Goede >>> wrote: >>> > >>> > HI, >>> > >>> > On 6/7/21 11:43 AM, Hans de Goede wrote: >>> > > Hi, >>> > > >>> > > On 6/3/21 7:26 PM, Hans de Goede wrote: >>> > >> Hi Rafael, >>> > >> >>> > >> I've been helping some users with trying to get to the bottom of >>> some >>> > >> new ACPI errors with kernel 5.12, see: >>> > >> >>> > >> [1]https://bugzilla.kernel.org/show_bug.cgi?id=213023 >>> > >> >>> > >> After looking at dmesg output; and after editing the dmesg output >>> > >> a bit so that I could do diff -u on it, the following stands out: >>> > >> >>> > >> --- dmesg_5.10.38-1-lts 2021-06-03 16:29:41.372922210 +0200 >>> > >> +++ dmesg_linux-5.12.5-arch1-1 2021-06-03 16:30:01.013031634 >>> +0200 >>> > >> @@ -92,7 +92,7 @@ >>> > >> ACPI: IRQ9 used by override. >>> > >> Using ACPI (MADT) for SMP configuration information >>> > >> ACPI: HPET id: 0x8086a201 base: 0xfed00000 >>> > >> -ACPI: Core revision 20200925 >>> > >> +ACPI: Core revision 20210105 >>> > >> PM: Registering ACPI NVS region [mem 0x7156c000-0x7156cfff] (4096 >>> bytes) >>> > >> PM: Registering ACPI NVS region [mem 0x8a88f000-0x8af7efff] >>> (7274496 bytes) >>> > >> ACPI FADT declares the system doesn't support PCIe ASPM, so >>> disable it >>> > >> @@ -113,10 +113,6 @@ >>> > >> ACPI: Dynamic OEM Table Load: >>> > >> ACPI: SSDT 0xFFFF... 0003FF (v02 PmRef Cpu0Cst 00003001 INTL >>> 20160527) >>> > >> ACPI: Dynamic OEM Table Load: >>> > >> -ACPI: SSDT 0xFFFF... 0000BA (v02 PmRef Cpu0Hwp 00003000 INTL >>> 20160527) >>> > >> -ACPI: Dynamic OEM Table Load: >>> > >> -ACPI: SSDT 0xFFFF... 000628 (v02 PmRef HwpLvt 00003000 INTL >>> 20160527) >>> > >> -ACPI: Dynamic OEM Table Load: >>> > >> ACPI: SSDT 0xFFFF... 000D14 (v02 PmRef ApIst 00003000 INTL >>> 20160527) >>> > >> ACPI: Dynamic OEM Table Load: >>> > >> ACPI: SSDT 0xFFFF... 000317 (v02 PmRef ApHwp 00003000 INTL >>> 20160527) >>> > >> >>> > >> Note how for some reason the kernel is no longer loading the >>> Cpu0Hwp and >>> > >> HwpLvt SSDT-s ? >>> > >> >>> > >> Do you have any ideas what might be causing this ? >>> > > >>> > > Good news, a very similar bug is being tracked here: >>> > > >>> > > [2]https://bugzilla.redhat.com/show_bug.cgi?id=1963717 >>> > > >>> > > And one of the reporters there has done a git bisect and has found >>> the commit which is causing the problem for them: >>> > > >>> > > """ >>> > > git-bisect points to 719e1f561afbe020ed175825a9bd25ed62ed1697 : >>> > > "ACPI: Execute platform _OSC also with query bit clear". >>> > > >>> > > Tested 5.12.9 kernel with the commit reverted, and confirmed that >>> the error >>> > > messages are gone. (I had to revert >>> > > 5a6a2c0f0f43676df27632d657a3f18b151a7ef8 for dependency too.) >>> > > >>> > > It also brings back the /sys/devices/system/cpu/cpu0/acpi_cppc >>> which is absent >>> > > in the stable 5.12.x >>> > > >>> > > Hope this helps >>> > > """ >>> > >>> > I've taken a quick look at commit 719e1f561afb ("ACPI: Execute >>> platform _OSC also with query bit clear") and I think I may have found >>> the problem. >>> > >>> > I've attached a patch which I think may fix this (and I've asked the >>> reporters of the bugs to test this). >>> Thank you, the patch looks reasonable to me. >>> It looks like commit 719e1f561afb went a bit too far. >>> >>> References >>> >>> 1. https://bugzilla.kernel.org/show_bug.cgi?id=213023 >>> 2. https://bugzilla.redhat.com/show_bug.cgi?id=1963717 >>