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Add helpers to check if a specific CR0/CR4 bit is set to avoid a plethora of implicit casts from the "unsigned long" return of kvm_read_cr*_bits(), and to make each caller's intent more obvious. Defer converting helpers that do truly ugly casts from "unsigned long" to "int", e.g. is_pse(), to a future commit so that their conversion is more isolated. Opportunistically drop the superfluous pcid_enabled from kvm_set_cr3(); the local variable is used only once, immediately after its declaration. Suggested-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Binbin Wu <binbin.wu@linux.intel.com> Link: https://lore.kernel.org/r/20230322045824.22970-2-binbin.wu@linux.intel.com [sean: move "obvious" conversions to this commit, massage changelog] 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 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.