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| <section id="skiboot-5-10-6"> |
| <span id="id1"></span><h1>skiboot-5.10.6<a class="headerlink" href="#skiboot-5-10-6" title="Link to this heading">ΒΆ</a></h1> |
| <p>skiboot 5.10.6 was released on Monday May 28th, 2018. It replaces |
| <a class="reference internal" href="skiboot-5.10.5.html#skiboot-5-10-5"><span class="std std-ref">skiboot-5.10.5</span></a> as the current stable release in the 5.10.x series.</p> |
| <p>It is recommended that 5.10.6 be used instead of any previous 5.10.x version, |
| especially due to the locking bug fixes.</p> |
| <p>It is expected that this will be the final 5.10.x version, with 6.0.x taking |
| over as the main stable branch.</p> |
| <p>Over <a class="reference internal" href="skiboot-5.10.5.html#skiboot-5-10-5"><span class="std std-ref">skiboot-5.10.5</span></a>, we have the following fixes:</p> |
| <ul> |
| <li><p>opal-prd: Do not error out on first failure for soft/hard offline.</p> |
| <p>The memory errors (CEs and UEs) that are detected as part of background |
| memory scrubbing are reported by PRD asynchronously to opal-prd along with |
| affected memory ranges. hservice_memory_error() converts these ranges into |
| page granularity before hooking up them to soft/hard offline-ing |
| infrastructure.</p> |
| <p>But the current implementation of hservice_memory_error() does not hookup |
| all the pages to soft/hard offline-ing if any of the page offline action |
| fails. e.g hard offline can fail for:</p> |
| <ul class="simple"> |
| <li><p>Pages that are not part of buddy managed pool.</p></li> |
| <li><p>Pages that are reserved by kernel using memblock_reserved()</p></li> |
| <li><p>Pages that are in use by kernel.</p></li> |
| </ul> |
| <p>But for the pages that are in use by user space application, the hard |
| offline marks the page as hwpoison, sends SIGBUS signal to kill the |
| affected application as recovery action and returns success.</p> |
| <p>Hence, It is possible that some of the pages in that memory range are in |
| use by application or free. By stopping on first error we loose the |
| opportunity to hwpoison the subsequent pages which may be free or in use by |
| application. This patch fixes this issue.</p> |
| </li> |
| <li><p>xive: fix missing unlock in error path</p> |
| <p>Found with sparse and some added lock annotations.</p> |
| </li> |
| <li><p>OPAL_PCI_SET_POWER_STATE: fix locking in error paths</p> |
| <p>Otherwise we could exit OPAL holding locks, potentially leading |
| to all sorts of problems later on.</p> |
| </li> |
| </ul> |
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