iommu/arm-smmu-v3: disable stall for quiet_cd
hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8MCHF CVE: NA Reference: https://lore.kernel.org/all/20231206005517.46005-1-zhangfei.gao@linaro.org/#r -------------------------------- In the stall model, invalid transactions were expected to be stalled and aborted by the IOPF handler. However, when killing a test case with a huge amount of data, the accelerator streamline can not stop until all data is consumed even if the page fault handler reports errors. As a result, the kill may take a long time, about 10 seconds with numerous iopf interrupts. So disable stall for quiet_cd in the non-force stall model, since force stall model (STALL_MODEL==0b10) requires CD.S must be 1. Signed-off-by:Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by:
Wenkai Lin <linwenkai6@hisilicon.com> Suggested-by:
Jean-Philippe Brucker <jean-philippe@linaro.org> Signed-off-by:
Chen Jun <chenjun102@huawei.com>
Loading
Please sign in to comment