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-rw-r--r-- | doc/release-notes/skiboot-6.0.11.rst | 57 |
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diff --git a/doc/release-notes/skiboot-6.0.11.rst b/doc/release-notes/skiboot-6.0.11.rst new file mode 100644 index 0000000..a09f381 --- /dev/null +++ b/doc/release-notes/skiboot-6.0.11.rst @@ -0,0 +1,57 @@ +.. _skiboot-6.0.11: + +============== +skiboot-6.0.11 +============== + +skiboot 6.0.11 was released on Friday November 2nd, 2018. It replaces +:ref:`skiboot-6.0.10` as the current stable release in the 6.0.x series. + +It is recommended that 6.0.11 be used instead of any previous 6.0.x version +due to the bug fixes it contains. + +The bug fixes are: + +- phb4/capp: Only reset FIR bits that cause capp machine check + + During CAPP recovery do_capp_recovery_scoms() will reset the CAPP Fir + register just after CAPP recovery is completed. This has an + unintentional side effect of preventing PRD from analyzing and + reporting this error. If PRD tries to read the CAPP FIR after opal has + already reset it, then it logs a critical error complaining "No active + error bits found". + + To prevent this from happening we update do_capp_recovery_scoms() to + only reset fir bits that cause CAPP machine check (local xstop). This + is done by reading the CAPP Fir Action0/1 & Mask registers and + generating a mask which is then written on CAPP_FIR_CLEAR register. +- phb4: Check for RX errors after link training + + Some PHB4 PHYs can get stuck in a bad state where they are constantly + retraining the link. This happens transparently to skiboot and Linux + but will causes PCIe to be slow. Resetting the PHB4 clears the + problem. + + We can detect this case by looking at the RX errors count where we + check for link stability. This patch does this by modifying the link + optimal code to check for RX errors. If errors are occurring we + retrain the link irrespective of the chip rev or card. + + Normally when this problem occurs, the RX error count is maxed out at + 255. When there is no problem, the count is 0. We chose 8 as the max + rx errors value to give us some margin for a few errors. There is also + a knob that can be used to set the error threshold for when we should + retrain the link. i.e. :: + + nvram -p ibm,skiboot --update-config phb-rx-err-max=8 + +- core/flash: Log return code when ffs_init() fails +- libflash/ipmi-hiomap: Use error codes rather than abort() +- libflash/ipmi-hiomap: Restore window state on window/protocol reset +- libflash/ipmi-hiomap: Improve event handling +- p9dsu: Describe platform BMC register configuration + + Provide the p9dsu-specific BMC configuration values required for the + host kernel to drive the VGA display correctly. +- p9dsu: Add HIOMAP-over-IPMI support +- libflash/ipmi-hiomap: Cleanup allocation on init failure |