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f3629c0ef1
Now that the vCPU doesn't dirty every page on the first iteration for architectures that support the dirty ring, honor vcpu_stop in the dirty ring's vCPU worker, i.e. stop when the main thread says "stop". This will allow plumbing vcpu_stop into the guest so that the vCPU doesn't need to periodically exit to userspace just to see if it should stop. Add a comment explaining that marking all pages as dirty is problematic for the dirty ring, as it results in the guest getting stuck on "ring full". This could be addressed by adding a GUEST_SYNC() in that initial loop, but it's not clear how that would interact with s390's behavior. Link: https://lore.kernel.org/r/20250111003004.1235645-10-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
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.