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For SEV-ES guests, the interception of control register write access is not recommended. Control register interception occurs prior to the control register being modified and the hypervisor is unable to modify the control register itself because the register is located in the encrypted register state. SEV-ES guests introduce new control register write traps. These traps provide intercept support of a control register write after the control register has been modified. The new control register value is provided in the VMCB EXITINFO1 field, allowing the hypervisor to track the setting of the guest control registers. Add support to track the value of the guest CR8 register using the control register write trap so that the hypervisor understands the guest operating mode. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Message-Id: <5a01033f4c8b3106ca9374b7cadf8e33da852df1.1607620209.git.thomas.lendacky@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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| kernel | ||
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| README | ||
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.