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After sending device capability queries and requests to the vNIC Server, an interrupt is triggered and the responses are written to the driver's CRQ response buffer. Since the interrupt can be triggered before all responses are written and visible to the partition, there is a danger that the interrupt handler or tasklet can terminate before all responses are read, resulting in a failure to initialize the device. To avoid this scenario, when capability commands are sent, we set a flag that will be checked in the following interrupt tasklet that will handle the capability responses from the server. Once all responses have been handled, the flag is disabled; and the tasklet is allowed to terminate. Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.