Date: Sun, 17 Jan 2021 11:49:40 +0200 From: Konstantin Belousov <kostikbel@gmail.com> To: rhurlin@freebsd.org Cc: freebsd-current <freebsd-current@freebsd.org> Subject: Re: Waiting for bufdaemon Message-ID: <YAQINMoEi7ysBSD5@kib.kiev.ua> In-Reply-To: <adb9d42c-d855-1edf-a57c-9b16aad481b7@gwdg.de> References: <7c4da243-52ff-c5ee-3d56-1ae651286e0e@alvermark.net> <369b3d82-98c5-b31e-6168-4003a042f174@FreeBSD.org> <YAGua8f8G57SbUMT@kib.kiev.ua> <556d40b8-92d7-303e-7d87-ea496d0ca733@FreeBSD.org> <YAG4g7dJbRWM7act@kib.kiev.ua> <ed52f8c1-5f43-b71e-1d56-625e2e064a7e@gwdg.de> <9ae3cc65-193a-39c3-4067-0d42e9f634b0@gwdg.de> <YAO9/cxnbGv5u3Bg@kib.kiev.ua> <adb9d42c-d855-1edf-a57c-9b16aad481b7@gwdg.de>
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On Sun, Jan 17, 2021 at 10:37:18AM +0100, Rainer Hurling wrote:
> Am 17.01.21 um 05:33 schrieb Konstantin Belousov:
> > On Sat, Jan 16, 2021 at 07:41:01PM +0100, Rainer Hurling wrote:
> >> During another shutdown after heavy usage of the box, the following
> >> messages were also seen:
> >>
> >>
> >> [...]
> >> Syncing disks, vnodes remaining... 22 EFI rt_settime call faulted, error 14
> >> efirtc0: CLOCK_SETTIME error 14
> >
> > This means that BIOS code faulted during RTC settime call. I doubt that
> > it is related.
> >
> > On the other hand, it is good that the onfault EFI RT code got tested finally.
> >
>
> Thanks for clarification :)
>
>
> Any chance of getting a fix for the AMD CPUs in the foreseeable future?
>
> Or should I revert commit 9e680e4005b7 on affected boxes until further
> notice (as a workaround)?
I am working on it, no ETA.
Interesting point would be to check on machines of other testers,
if the following hides the problem.
diff --git a/sys/x86/x86/tsc.c b/sys/x86/x86/tsc.c
index 85924df98312..5700a8ca98e5 100644
--- a/sys/x86/x86/tsc.c
+++ b/sys/x86/x86/tsc.c
@@ -639,7 +639,7 @@ init_TSC_tc(void)
* on Intel, and MFENCE;RDTSC on AMD.
* - For really old CPUs, just use RDTSC.
*/
- if ((cpu_vendor_id == CPU_VENDOR_AMD ||
+ if (false && (cpu_vendor_id == CPU_VENDOR_AMD ||
cpu_vendor_id == CPU_VENDOR_HYGON) &&
CPUID_TO_FAMILY(cpu_id) >= 0x17) {
tsc_timecounter.tc_get_timecount = shift > 0 ?
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