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authorAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
committerAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
commitaf1a266670d040d2f4083ff309d732d648afba2a (patch)
tree2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/skiboot/doc/release-notes/skiboot-5.1.4.rst
parente02cda008591317b1625707ff8e115a4841aa889 (diff)
Add submodule dependency filesHEADmaster
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+skiboot-5.1.4
+-------------
+
+skiboot-5.1.4 was released on September 26th, 2015.
+
+skiboot-5.1.4 is the 5th stable release of 5.1, it follows skiboot-5.1.3
+(which was released September 15th, 2015).
+
+Skiboot 5.1.4 contains all fixes from skiboot-5.1.3 and is an important bug
+fix release and a strongly recommended update from any prior skiboot-5.1.x
+release.
+
+Changes
+^^^^^^^
+Over skiboot-5.1.3, we have the following changes:
+
+- Rate limit OPAL_MSG_OCC to only one outstanding message to host
+
+ In the event of a lot of OCC events (or many CPU cores), we could
+ send many OCC messages to the host, which if it wasn't calling
+ opal_get_msg really often, would cause skiboot to malloc() additional
+ messages until we ran out of skiboot heap and things didn't end up
+ being much fun.
+
+ When running certain hardware exercisers, they seem to steal all time
+ from Linux being able to call opal_get_msg, causing these to queue up
+ and get "opalmsg: No available node in the free list, allocating" warnings
+ followed by tonnes of backtraces of failing memory allocations.
+
+- Ensure reserved memory ranges are exposed correctly to host
+ (fix corrupted SLW image)
+
+ We seem to have not hit this on ASTBMC based OpenPower machines, but was
+ certainly hit on FSP based machines