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【OLK-5.10】大包2P启动，进OS后报SMMU CMD_SYNC timeout错误，调试网口上传文件出现CPU挂死
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2023-04-17 14:21
【严重程度】 严重 【特性】 【重现类型】 有条件必然重现 【定位分析】 </p><p>当核数大于ecmdq数时，会有多个核共用一个ecmdq。每个NUMA结点分摊到的ecmdq数小于该NUMA结点的核数。则编号为0到smmu->nr_ecmdq - 1的CPU并不能完全引用所有的ecmdq，初始化这些核使用的ecmdq不能完全初始化所有的ecmdq，导致出现测试报告的问题。</p><p> ---------------------------------------</p><p> | Node0 | Node1 |</p><p> |---------------------------------------|</p><p> | 0 1 2 3 | 4 5 6 7 | CPU ID</p><p> |---------------------------------------|</p><p> | 0 1 | 2 3 | ECMDQ ID</p><p> ---------------------------------------</p><p>如上图，遍历前4个核0-3，只能覆盖到前两个ECMDQ。</p><p><br></p><p><br></p><p> 【影响评估及测试建议】 None 【对外部影响描述】 None
【严重程度】 严重 【特性】 【重现类型】 有条件必然重现 【定位分析】 </p><p>当核数大于ecmdq数时，会有多个核共用一个ecmdq。每个NUMA结点分摊到的ecmdq数小于该NUMA结点的核数。则编号为0到smmu->nr_ecmdq - 1的CPU并不能完全引用所有的ecmdq，初始化这些核使用的ecmdq不能完全初始化所有的ecmdq，导致出现测试报告的问题。</p><p> ---------------------------------------</p><p> | Node0 | Node1 |</p><p> |---------------------------------------|</p><p> | 0 1 2 3 | 4 5 6 7 | CPU ID</p><p> |---------------------------------------|</p><p> | 0 1 | 2 3 | ECMDQ ID</p><p> ---------------------------------------</p><p>如上图，遍历前4个核0-3，只能覆盖到前两个ECMDQ。</p><p><br></p><p><br></p><p> 【影响评估及测试建议】 None 【对外部影响描述】 None
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