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30d583fd4e
For now, this is basically an excuse to add back the void* argument to the function, while removing some knowledge of vcpu->arch.pio* from its callers. The WARN that vcpu->arch.pio.count is zero is also extended to OUT operations. The vcpu->arch.pio* fields still need to be filled even when the PIO is handled in-kernel as __emulator_pio_in() is always followed by complete_emulator_pio_in(). But after fixing that, it will be possible to to only populate the vcpu->arch.pio* fields on userspace exits. No functional change intended. Signed-off-by: Paolo Bonzini <pbonzini@redhat.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 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.