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b93d2ec34e
Reword the MSR filtering documentatiion to more precisely define the
behavior of filtering using common virtualization terminology.
- Explicitly document KVM's behavior when an MSR is denied
- s/handled/allowed as there is no guarantee KVM will "handle" the
MSR access
- Drop the "fall back" terminology, which incorrectly suggests that
there is existing KVM behavior to fall back to
- Fix an off-by-one error in the range (the end is exclusive)
- Call out the interaction between MSR filtering and
KVM_CAP_X86_USER_SPACE_MSR's KVM_MSR_EXIT_REASON_FILTER
- Delete the redundant paragraph on what '0' and '1' in the bitmap
means, it's covered by the sections on KVM_MSR_FILTER_{READ,WRITE}
- Delete the clause on x2APIC MSR behavior depending on APIC base, this
is covered by stating that KVM follows architectural behavior when
emulating/virtualizing MSR accesses
Reported-by: Aaron Lewis <aaronlewis@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20220831001706.4075399-3-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.