[Skiboot] skiboot 5.1.0 released

Benjamin Herrenschmidt benh at au1.ibm.com
Tue Aug 18 08:14:19 AEST 2015


On Tue, 2015-08-18 at 08:10 +1000, Stewart Smith wrote:
> Release notes are as follows:
> 

> New features:
> - Centaur i2c support

This isn't fuctional yet, we don't yet have the code to hookup on the
new SBE timer facility, I was waiting for HB to procide the timer
facility in their official builds. Dunno if that is the case yet...

We will need a release once we have that.

Ben.

> - Add Naples chip (CPU, PHB, LPC serial interrupts) support
> - Added qemu platform
> - improvements to FSI error handling
> - improvements in chip TOD failover (some only on FSP systems)
> - Set Relative Priority Register (RPR) to recommended value
>   - this affects thread priority in SMT modes
> - greatly reduce memory consumption by CPU stacks for non-present 
> CPUs
>   - Previously we would reserve enough memory for max PIR for each 
> CPU
>     type.
>   - This fix frees up 77MB of RAM on a typical P8 system.
> - increased OPAL API documentation
> - Asynchronous preloading of resources from FSP/flash
>   - improves boot time on some systems
> - Basic Garrison platform support
> - Add Mambo platform (P8 Functional Simulator, systemsim)
>   - includes fake NVRAM, RTC
> - Support building with GCOV, increasing memory for skiboot binary to 
> 2MB
>   - includes boot code coverage testing
> - Increased skiboot HEAP size.
>   - We are not aware of any system where you would run out, but on 
> large
>     systems it was getting closer than we liked.
> - add boot_tests.sh for helping automate boot testing on FSP and BMC 
> machines
> - Versioning of pflash and gard utilities to help Linux (or other OS)
>   distributions with packaging.
> - OCC throttle status messages to host
> - CAPP timebase sync ("ibm,capp-timebase-sync" in DT to indicate CAPP 
> timebase
>   was synced by OPAL)
> - opal-api: Add OPAL call to handle abnormal reboots.
>      OPAL_CEC_REBOOT2
>      Currently it will support two reboot types (0). normal reboot, 
> that
>      will behave similar to that of opal_cec_reboot() call, and
>      (1). platform error reboot.
> 
>      Long term, this is designed to replace OPAL_CEC_REBOOT.
> 
> New features for FSP based machines:
> - in-band IPMI support
> - ethernet adaptor location codes
> - add DIMM frequency information to device tree
> - improvements in FSP error log code paths
> - fix some boot time memory leaks
>   - harmless to end user
> 
> New features for AMI BMC based machines:
> - PCIe power workaround for K80
> - Added support for Macronix 128Mbit flash chips
> - Initial PRD support for Firestone platform
> - improved reliability when BMC reboots
> 
> The following bugs have been fixed:
> - Increase PHB3 timeout for electrical links coming up to 2 seconds.
>   - fixes issues with some Mellanox cards
> - Hang in opal_reinit_cpus() that could prevent kdump from 
> functioning
> - PHB3: fix crash in phb3_init
> - PHB3: fix crash with fenced PHB in phb3_init_hw()
> - Fix bugs in hw/bt.c (interface for IPMI on BMC machines) that could 
> possibly
>   lead to a crash (dereferencing invalid address, deadlock)
> - ipmi/sel: fix use-after-free
> - Bug fixes in EEH handling
>   - opal_pci_next_error() cleared OPAL_EVENT_PCI_ERROR 
> unconditionally, possibly
>     leading to missed errors.
> - external/opal-prd: Only map each PRD range once
>   - could eventually lead to failing to map PRD ranges
> - On skiboot crash, don't try to print symbol when we didn't find one
>   - makes backtrace prettier
> - On skiboot crash, dump hssr0 and hsrr1 registers correctly.
> - Better support old and biarch compilers
>   - test "new" compiler flags before using them
>   - Specify -mabi=elfv1 if supported (which means it's needed)
> - fix boot-coverage-report makefile target
> - ipmi: Fix the opal_ipmi_recv() call to handle the error path
>   - Could make kernel a sad panda when in continues with other IPMI 
> commands
> - IPMI: truncate SELs at 2kb
>   - it's the limit of the astbmc. We think.
> - IPMI/SEL/PEL:
>   - As per PEL spec, we should log events with severity >= 0x22 and 
> "service
>     action flag" is "on". But in our case, all logs OPAL originagted 
> logs
>     are makred as report externally.
>     We now only report logs with severity >= 0x22
> - IPMI: fixes to eSEL logging
> - hw/phb3: Change reserved PE to 255
>   -  Currently, we have reserved PE#0 to which all RIDs are mapped 
> prior
>      to PE assignment request from kernel. The last M64 BAR is 
> configured
>      to have shared mode. So we have to cut off the first M64 
> segment,
>      which corresponds to reserved PE#0 in kernel. If the first BAR
>      (for example PF's IOV BAR) requires huge alignment in kernel, we
>      have to waste huge M64 space to accomodate the alignment. If we
>      have reserved PE#256, the waste of M64 space will be avoided.
> 
> FSP-specific bugs fixed:
> - (also fixed in skiboot-5.0.2) Fix race in firenze_get_slot_info() 
> leading to
>   assert() with many PCI cards
>     With many PCI cards, we'd hit a race where calls to
>     firenze_add_pcidev_to_fsp_inventory would step on each other 
> leading to
>     memory corruption and finally an assert() in the allocator being 
> hit
>     during boot.
> - PCIe power workaround for K80 cards
> - /ibm,opal/led renamed to /ibm,opal/leds in Device Tree
>   - compatible change as no FSP based systems shipped with skiboot
> -5.0
> 
> General improvements:
> - don't run pollers on non-boot CPUs in time_wait
> - improvements to opal-prd, pflash, libflash
>   - including new blocklevel interface in libflash
> - many minor fixes to issues found by static analysis
> - improvements in FSP error log code paths
> - code cleanup in memory allocator
> - Don't expose individual nvram partitions in the device tree, just 
> the whole
>   flash device.
> - build improvements for building on ppc64el host
> - improvements in cpu_relax() for idle threads, needed for GCOV on 
> large
>   machines.
> - Optimized memset() for POWER8, greatly reducing number of 
> instructions
>   executed for boot, which helps boot time in simulators.
> - Major improvements in hello_world kernel
>   - Bloat of huge 17 instruction test case reduced to 10.
> - Disable bust_locks for general calls of abort()
>   - Should enable better error messages during abort() when other 
> users of
>     LPC bus exist (e.g. flash)
> - unified version numbers for bundled utilities
> - external/boot_test/boot_test.sh
>   - better usable for automated boot testing
> 
> Contributors
> ------------
> Since skiboot-5.0, we've had the following changesets:
> 
> Processed 372 csets from 27 developers
> 2 employers found
> A total of 15868 lines added, 3359 removed (delta 12509)
> 
> Developers with the most changesets
> Stewart Smith              117 (31.5%)
> Jeremy Kerr                 37 (9.9%)
> Cyril Bur                   33 (8.9%)
> Vasant Hegde                32 (8.6%)
> Benjamin Herrenschmidt      32 (8.6%)
> Kamalesh Babulal            22 (5.9%)
> Joel Stanley                12 (3.2%)
> Mahesh Salgaonkar           12 (3.2%)
> Alistair Popple             12 (3.2%)
> Neelesh Gupta                9 (2.4%)
> Gavin Shan                   8 (2.2%)
> Cédric Le Goater            8 (2.2%)
> Ananth N Mavinakayanahalli    8 (2.2%)
> Vipin K Parashar             6 (1.6%)
> Michael Neuling              6 (1.6%)
> Samuel Mendoza-Jonas         3 (0.8%)
> Frederic Bonnard             3 (0.8%)
> Andrew Donnellan             2 (0.5%)
> Vaidyanathan Srinivasan      2 (0.5%)
> Philippe Bergheaud           1 (0.3%)
> Shilpasri G Bhat             1 (0.3%)
> Daniel Axtens                1 (0.3%)
> Hari Bathini                 1 (0.3%)
> Michael Ellerman             1 (0.3%)
> Andrei Warkentin             1 (0.3%)
> Dan Horák                   1 (0.3%)
> Anton Blanchard              1 (0.3%)
> 
> Developers with the most changed lines
> Stewart Smith             4499 (27.3%)
> Benjamin Herrenschmidt    3782 (22.9%)
> Jeremy Kerr               1887 (11.4%)
> Cyril Bur                 1654 (10.0%)
> Vasant Hegde               959 (5.8%)
> Mahesh Salgaonkar          886 (5.4%)
> Neelesh Gupta              473 (2.9%)
> Samuel Mendoza-Jonas       387 (2.3%)
> Vipin K Parashar           332 (2.0%)
> Philippe Bergheaud         171 (1.0%)
> Shilpasri G Bhat           165 (1.0%)
> Alistair Popple            151 (0.9%)
> Joel Stanley               105 (0.6%)
> Cédric Le Goater           89 (0.5%)
> Gavin Shan                  83 (0.5%)
> Frederic Bonnard            76 (0.5%)
> Kamalesh Babulal            65 (0.4%)
> Michael Neuling             46 (0.3%)
> Daniel Axtens               31 (0.2%)
> Andrew Donnellan            22 (0.1%)
> Ananth N Mavinakayanahalli   20 (0.1%)
> Anton Blanchard              3 (0.0%)
> Vaidyanathan Srinivasan      2 (0.0%)
> Hari Bathini                 2 (0.0%)
> Michael Ellerman             1 (0.0%)
> Andrei Warkentin             1 (0.0%)
> Dan Horák                   1 (0.0%)
> 
> Developers with the most lines removed
> Michael Neuling             24 (0.7%)
> Hari Bathini                 1 (0.0%)
> 
> Developers with the most signoffs (total 253)
> Stewart Smith              249 (98.4%)
> Mahesh Salgaonkar            4 (1.6%)
> 
> Developers with the most reviews (total 24)
> Vasant Hegde                 9 (37.5%)
> Joel Stanley                 3 (12.5%)
> Gavin Shan                   2 (8.3%)
> Kamalesh Babulal             2 (8.3%)
> Samuel Mendoza-Jonas         2 (8.3%)
> Alistair Popple              2 (8.3%)
> Stewart Smith                1 (4.2%)
> Andrei Warkentin             1 (4.2%)
> Preeti U Murthy              1 (4.2%)
> Ananth N Mavinakayanahalli    1 (4.2%)
> 
> Developers with the most test credits (total 1)
> Chad Larson                  1 (100.0%)
> 
> Developers who gave the most tested-by credits (total 1)
> Gavin Shan                   1 (100.0%)
> 
> Developers with the most report credits (total 4)
> Benjamin Herrenschmidt       2 (50.0%)
> Chad Larson                  1 (25.0%)
> Andrei Warkentin             1 (25.0%)
> 
> Developers who gave the most report credits (total 4)
> Stewart Smith                3 (75.0%)
> Gavin Shan                   1 (25.0%)
> 
> Top changeset contributors by employer
> IBM                        369 (99.2%)
> (Unknown)                    3 (0.8%)
> 
> Top lines changed by employer
> IBM                       16497 (100.0%)
> (Unknown)                    3 (0.0%)
> 
> Employers with the most signoffs (total 253)
> IBM                        253 (100.0%)
> 
> Employers with the most hackers (total 27)
> IBM                         24 (88.9%)
> (Unknown)                    3 (11.1%)
> 
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