iommu/arm-smmu-v3: Add suspend and resume support #236
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Hi @wangzhimin1179. Thanks for your PR. I'm waiting for a deepin-community member to verify that this patch is reasonable to test. If it is, they should reply with Once the patch is verified, the new status will be reflected by the I understand the commands that are listed here. Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. |
| /* Saves the msg (base addr of msi irq) and restores it during resume */ | ||
| desc->msg.address_lo = msg->address_lo; | ||
| desc->msg.address_hi = msg->address_hi; | ||
| desc->msg.data = msg->data; |
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下面3222行只用到了address_hi和address_lo,这个data没用到? 是不是不用赋值?
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这里有用到desc->msg->data 第一版本的是对的 |
Add suspend and resume support for smmuv3. The smmu is stopped when suspending and started when resuming. When the smmu is suspended, it is powered off and the registers are cleared. So saves the msi_msg context during msi interrupt initialization of smmu. When resume happens it calls arm_smmu_device_reset() to restore the registers. Closes: https://gitee.com/openeuler/kernel/issues/I4DZ7Q Signed-off-by: Bixuan Cui <cuibixuan@huawei.com> Signed-off-by: Zhou Guanghui <zhouguanghui1@huawei.com> Reviewed-by: Hanjun Guo <guohanjun@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Signed-off-by: Wang Xu <wangxu@phytium.com.cn> Signed-off-by: Li Mingzhe <limingzhe1839@phytium.com.cn> Signed-off-by: Wang Zhimin <wangzhimin1179@phytium.com.cn>
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deepin pr auto review关键摘要:
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Add suspend and resume support for smmuv3. The smmu is stopped when suspending and started when resuming.
When the smmu is suspended, it is powered off and the registers are cleared. So saves the msi_msg context during msi interrupt initialization of smmu. When resume happens it calls arm_smmu_device_reset() to restore the registers.
Closes: https://gitee.com/openeuler/kernel/issues/I4DZ7Q