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14442a159c
Add support for generating VMX feature names in capflags.c and use the resulting x86_vmx_flags to print the VMX flags in /proc/cpuinfo. Don't print VMX flags if no bits are set in word 0, which holds Pin Controls. Pin Control's INTR and NMI exiting are fundamental pillars of VMX, if they are not supported then the CPU is broken, it does not actually support VMX, or the kernel wasn't built with support for the target CPU. Print the features in a dedicated "vmx flags" line to avoid polluting the common "flags" and to avoid having to prefix all flags with "vmx_", which results in horrendously long names. Keep synthetic VMX flags in cpufeatures to preserve /proc/cpuinfo's ABI for those flags. This means that "flags" and "vmx flags" will have duplicate entries for tpr_shadow (virtual_tpr), vnmi, ept, flexpriority, vpid and ept_ad, but caps the pollution of "flags" at those six VMX features. The vendor-specific code that populates the synthetic flags will be consolidated in a future patch to further minimize the lasting damage. Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/20191221044513.21680-12-sean.j.christopherson@intel.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.