| skiboot-5.1.12 |
| -------------- |
| |
| skiboot-5.1.12 was released on Friday December 4th, 2015. |
| |
| skiboot-5.1.12 is the 13th stable release of 5.1, it follows skiboot-5.1.11 |
| (which was released November 13th, 2015). |
| |
| Skiboot 5.1.12 contains bug fixes and a performance improvement. |
| |
| opal-prd |
| ^^^^^^^^ |
| |
| - Display an explict and obvious message if running on a system that does |
| not support opal-prd, such as an IBM FSP based POWER system, where the |
| FSP takes on the role of opal-prd. |
| |
| pflash |
| ^^^^^^ |
| |
| - Fix a missing (C) header |
| - cherry-picked from master. |
| |
| General |
| ^^^^^^^ |
| |
| - Don't link with libgcc |
| - On some toolchains, we don't have libgcc available. |
| |
| POWER8 PHB (PCIe) specific |
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| |
| - hw/phb3: Flush cache line after updating P/Q bits |
| When doing an MSI EOI, we update the P and Q bits in the IVE. That causes |
| the corresponding cache line to be dirty in the L3 which will cause a |
| subsequent update by the PHB (upon receiving the next MSI) to get a few |
| retries until it gets flushed. |
| |
| We improve the situation (and thus performance) by doing a dcbf |
| instruction to force a flush of the update we do in SW. |
| |
| This improves interrupt performance, reducing latency per interrupt. |
| The improvement will vary by workload. |
| |
| IBM FSP based machines |
| ^^^^^^^^^^^^^^^^^^^^^^ |
| |
| - FSP: Give up PSI link on shutdown |
| This clears up some erroneous SRCs (error logs) in some situations. |
| - Correctly report back Real Time Clock errors to host |
| Under certain rare error conditions, we could return an error code |
| to the host OS that would cause current Linux kernels to get stuck |
| in an infinite loop during boot. |
| This was introduced in skiboot-5.0-rc1. |
