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5910ccf03d
Move initialization of KVM's IRQ FD workqueue below arch hardware setup as a step towards consolidating arch "init" and "hardware setup", and eventually towards dropping the hooks entirely. There is no dependency on the workqueue being created before hardware setup, the workqueue is used only when destroying VMs, i.e. only needs to be created before /dev/kvm is exposed to userspace. Move the destruction of the workqueue before the arch hooks to maintain symmetry, and so that arch code can move away from the hooks without having to worry about ordering changes. Reword the comment about kvm_irqfd_init() needing to come after kvm_arch_init() to call out that kvm_arch_init() must come before common KVM does _anything_, as x86 very subtly relies on that behavior to deal with multiple calls to kvm_init(), e.g. if userspace attempts to load kvm_amd.ko and kvm_intel.ko. Tag the code with a FIXME, as x86's subtle requirement is gross, and invoking an arch callback as the very first action in a helper that is called only from arch code is silly. Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20221130230934.1014142-3-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.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.