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author | Stewart Smith <stewart@linux.ibm.com> | 2018-10-12 11:59:58 +1100 |
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committer | Stewart Smith <stewart@linux.ibm.com> | 2018-10-12 11:59:58 +1100 |
commit | 19484fa4338f84617ae8282f17b43d658afc3589 (patch) | |
tree | 7ca06f667794223c9c6630e473ec80bc7a84e953 | |
parent | d597d8d996163d1069e4c4a8f5fdd29bdef398ed (diff) | |
download | skiboot-6.0.9.zip skiboot-6.0.9.tar.gz skiboot-6.0.9.tar.bz2 |
skiboot 6.0.9 release notesv6.0.9
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
-rw-r--r-- | doc/release-notes/skiboot-6.0.9.rst | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/doc/release-notes/skiboot-6.0.9.rst b/doc/release-notes/skiboot-6.0.9.rst new file mode 100644 index 0000000..87eb797 --- /dev/null +++ b/doc/release-notes/skiboot-6.0.9.rst @@ -0,0 +1,139 @@ +.. _skiboot-6.0.9: + +============= +skiboot-6.0.9 +============= + +skiboot 6.0.9 was released on Friday October 12th, 2018. It replaces +:ref:`skiboot-6.0.8` as the current stable release in the 6.0.x series. + +It is recommended that 6.0.9 be used instead of any previous 6.0.x version +due to the bug fixes it contains. + +The bug fixes are: + +- opal/hmi: Ignore debug trigger inject core FIR. + + Core FIR[60] is a side effect of the work around for the CI Vector Load + issue in DD2.1. Usually this gets delivered as HMI with HMER[17] where + Linux already ignores it. But it looks like in some cases we may happen + to see CORE_FIR[60] while we are already in Malfunction Alert HMI + (HMER[0]) due to other reasons e.g. CAPI recovery or NPU xstop. If that + happens then just ignore it instead of crashing kernel as not recoverable. + +- opal/hmi: Handle early HMIs on thread0 when secondaries are still in OPAL. + + When primary thread receives a CORE level HMI for timer facility errors + while secondaries are still in OPAL, thread 0 ends up in rendez-vous + waiting for secondaries to get into hmi handling. This is because OPAL + runs with MSR(EE=0) and hence HMIs are delayed on secondary threads until + they are given to Linux OS. Fix this by adding a check for secondary + state and force them in hmi handling by queuing job on secondary threads. + + I have tested this by injecting HDEC parity error very early during Linux + kernel boot. Recovery works fine for non-TB errors. But if TB is bad at + this very eary stage we already doomed. + + Without this patch we see: :: + + [ 285.046347408,7] OPAL: Start CPU 0x0843 (PIR 0x0843) -> 0x000000000000a83c + [ 285.051160609,7] OPAL: Start CPU 0x0844 (PIR 0x0844) -> 0x000000000000a83c + [ 285.055359021,7] HMI: Received HMI interrupt: HMER = 0x0840000000000000 + [ 285.055361439,7] HMI: [Loc: U78D3.ND1.WZS004A-P1-C48]: P:8 C:17 T:0: TFMR(2e12002870e14000) Timer Facility Error + [ 286.232183823,3] HMI: Rendez-vous stage 1 timeout, CPU 0x844 waiting for thread 1 (sptr=0000ccc1) + [ 287.409002056,3] HMI: Rendez-vous stage 1 timeout, CPU 0x844 waiting for thread 2 (sptr=0000ccc1) + [ 289.073820164,3] HMI: Rendez-vous stage 1 timeout, CPU 0x844 waiting for thread 3 (sptr=0000ccc1) + [ 290.250638683,3] HMI: Rendez-vous stage 1 timeout, CPU 0x844 waiting for thread 1 (sptr=0000ccc2) + [ 291.427456821,3] HMI: Rendez-vous stage 1 timeout, CPU 0x844 waiting for thread 2 (sptr=0000ccc2) + [ 293.092274807,3] HMI: Rendez-vous stage 1 timeout, CPU 0x844 waiting for thread 3 (sptr=0000ccc2) + [ 294.269092904,3] HMI: Rendez-vous stage 1 timeout, CPU 0x844 waiting for thread 1 (sptr=0000ccc3) + [ 295.445910944,3] HMI: Rendez-vous stage 1 timeout, CPU 0x844 waiting for thread 2 (sptr=0000ccc3) + [ 297.110728970,3] HMI: Rendez-vous stage 1 timeout, CPU 0x844 waiting for thread 3 (sptr=0000ccc3) + + After this patch: :: + + [ 259.401719351,7] OPAL: Start CPU 0x0841 (PIR 0x0841) -> 0x000000000000a83c + [ 259.406259572,7] OPAL: Start CPU 0x0842 (PIR 0x0842) -> 0x000000000000a83c + [ 259.410615534,7] OPAL: Start CPU 0x0843 (PIR 0x0843) -> 0x000000000000a83c + [ 259.415444519,7] OPAL: Start CPU 0x0844 (PIR 0x0844) -> 0x000000000000a83c + [ 259.419641401,7] HMI: Received HMI interrupt: HMER = 0x0840000000000000 + [ 259.419644124,7] HMI: [Loc: U78D3.ND1.WZS004A-P1-C48]: P:8 C:17 T:0: TFMR(2e12002870e04000) Timer Facility Error + [ 259.419650678,7] HMI: Sending hmi job to thread 1 + [ 259.419652744,7] HMI: Sending hmi job to thread 2 + [ 259.419653051,7] HMI: Received HMI interrupt: HMER = 0x0840000000000000 + [ 259.419654725,7] HMI: Sending hmi job to thread 3 + [ 259.419654916,7] HMI: Received HMI interrupt: HMER = 0x0840000000000000 + [ 259.419658025,7] HMI: Received HMI interrupt: HMER = 0x0840000000000000 + [ 259.419658406,7] HMI: [Loc: U78D3.ND1.WZS004A-P1-C48]: P:8 C:17 T:2: TFMR(2e12002870e04000) Timer Facility Error + [ 259.419663095,7] HMI: [Loc: U78D3.ND1.WZS004A-P1-C48]: P:8 C:17 T:3: TFMR(2e12002870e04000) Timer Facility Error + [ 259.419655234,7] HMI: [Loc: U78D3.ND1.WZS004A-P1-C48]: P:8 C:17 T:1: TFMR(2e12002870e04000) Timer Facility Error + [ 259.425109779,7] OPAL: Start CPU 0x0845 (PIR 0x0845) -> 0x000000000000a83c + [ 259.429870681,7] OPAL: Start CPU 0x0846 (PIR 0x0846) -> 0x000000000000a83c + [ 259.434549250,7] OPAL: Start CPU 0x0847 (PIR 0x0847) -> 0x000000000000a83c + +- hw/bt.c: quieten all the noisy BT/IPMI messages +- npu2: Use correct kill type for TCE invalidation + + kill_type is enum of OPAL_PCI_TCE_KILL_PAGES, OPAL_PCI_TCE_KILL_PE, + OPAL_PCI_TCE_KILL_ALL and phb4_tce_kill() gets it right but + npu2_tce_kill() uses OPAL_PCI_TCE_KILL which is an OPAL API token. + +- hw/npu2-opencapi: Fix setting of supported OpenCAPI templates + + In opal_npu_tl_set(), we made a typo that means the OPAL_NPU_TL_SET call + may not clear the enable bits for templates that were previously enabled + but are now disabled. + + Fix the typo so we clear NPU2_OTL_CONFIG1_TX_TEMP2_EN as well as + TEMP{1,3}_EN. + +- phb4: Workaround PHB errata with CFG write UR/CA errors + + If the PHB encounters a UR or CA status on a CFG write, it will + incorrectly freeze the wrong PE. Instead of using the PE# specified + in the CONFIG_ADDRESS register, it will use the PE# of whatever + MMIO occurred last. + + Work around this disabling freeze on such errors + +- phb4: Handle allocation errors in phb4_eeh_dump_regs() + + If the zalloc fails (and it can be a rather large allocation), + we will overwite memory at 0 instead of failing. + +- phb4: Don't try to access non-existent PEST entries + + In a POWER9 chip, some PHB4s have 256 PEs, some have 512. + + Currently, the diagnostics code retrieves 512 unconditionally, + which is wrong and causes us to incorrectly report bogus values + for the "high" PEs on the small PHBs. + + Use the actual number of implemented PEs instead + +- phb4: Don't probe a PHB if its garded + + Presently phb4_probe_stack() causes an exception while trying to probe + a PHB if its garded. This causes skiboot to go into a reboot loop with + following exception log: :: + + *********************************************** + Fatal MCE at 000000003006ecd4 .probe_phb4+0x570 + CFAR : 00000000300b98a0 + <snip> + Aborting! + CPU 0018 Backtrace: + S: 0000000031cc37e0 R: 000000003001a51c ._abort+0x4c + S: 0000000031cc3860 R: 0000000030028170 .exception_entry+0x180 + S: 0000000031cc3a40 R: 0000000000001f10 * + S: 0000000031cc3c20 R: 000000003006ecb0 .probe_phb4+0x54c + S: 0000000031cc3e30 R: 0000000030014ca4 .main_cpu_entry+0x5b0 + S: 0000000031cc3f00 R: 0000000030002700 boot_entry+0x1b8 + + This is caused as phb4_probe_stack() will ignore all xscom read/write + errors to enable PHB Bars and then tries to perform an mmio to read + PHB Version registers that cause the fatal MCE. + + We fix this by ignoring the PHB probe if the first xscom_write() to + populate the PHB Bar register fails, which indicates that there is + something wrong with the PHB. |