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If an internal task abort timeout occurs, the controller has developed a fault, and needs to be reset to be recovered. When this occurs during error handling, the current policy is to allow error handling to continue, and the inevitable nexus ha reset will handle the required reset. However various steps of error handling need to taken before this happens. These also involve some level of HW interaction, which will also fail with various timeouts. Speed up this process by recording a HW fault bit for an internal abort timeout - when this is set, just automatically error any HW interaction, and essentially go straight to clear nexus ha (to reset the controller). Link: https://lore.kernel.org/r/1623058179-80434-6-git-send-email-john.garry@huawei.com Signed-off-by: Luo Jiaxing <luojiaxing@huawei.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> |
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README |
Linux kernel ============ There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. The formatted documentation can also be read online at: https://www.kernel.org/doc/html/latest/ There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.