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85592114ff
On VHE, the Fine Grain Traps registers are written to hardware in
kvm_arch_vcpu_load()->..->__activate_traps_hfgxtr(), but the fgt array is
computed later, in kvm_vcpu_load_fgt(). This can lead to zero being written
to the FGT registers the first time a VCPU is loaded. Also, any changes to
the fgt array will be visible only after the VCPU is scheduled out, and
then back in, which is not the intended behaviour.
Fix it by computing the fgt array just before the fgt traps are written
to hardware.
Fixes:
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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 reStructuredText 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.