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4f0dcb5440
Remove a bogus write to vcpu->arch.cr0 that immediately precedes vmx_set_cr0() during vCPU RESET/INIT. For RESET, this is a nop since the "old" CR0 value is meaningless. But for INIT, if the vCPU is coming from paging enabled mode, crushing vcpu->arch.cr0 will cause the various is_paging() checks in vmx_set_cr0() to get false negatives. For the exit_lmode() case, the false negative is benign as vmx_set_efer() is called immediately after vmx_set_cr0(). For EPT without unrestricted guest, the false negative will cause KVM to unnecessarily run with CR3 load/store exiting. But again, this is benign, albeit sub-optimal. Reviewed-by: Reiji Watanabe <reijiw@google.com> Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20210713163324.627647-23-seanjc@google.com> 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.