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113386ca98
Channel offers are requested during VMBus initialization and resume from hibernation. Add support to wait for all boot-time channel offers to be delivered and processed before returning from vmbus_request_offers. This is in analogy to a PCI bus not returning from probe until it has scanned all devices on the bus. Without this, user mode can race with VMBus initialization and miss channel offers. User mode has no way to work around this other than sleeping for a while, since there is no way to know when VMBus has finished processing boot-time offers. With this added functionality, remove earlier logic which keeps track of count of offered channels post resume from hibernation. Once all offers delivered message is received, no further boot-time offers are going to be received. Consequently, logic to prevent suspend from happening after previous resume had missing offers, is also removed. Co-developed-by: John Starks <jostarks@microsoft.com> Signed-off-by: John Starks <jostarks@microsoft.com> Signed-off-by: Naman Jain <namjain@linux.microsoft.com> Reviewed-by: Easwar Hariharan <eahariha@linux.microsoft.com> Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com> Reviewed-by: Michael Kelley <mhklinux@outlook.com> Link: https://lore.kernel.org/r/20250102130712.1661-2-namjain@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <20250102130712.1661-2-namjain@linux.microsoft.com> |
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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 reStructuredText 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.