f1c6366e30
When a guest is running under SEV-ES, the hypervisor cannot access the guest register state. There are numerous places in the KVM code where certain registers are accessed that are not allowed to be accessed (e.g. RIP, CR0, etc). Add checks to prevent register accesses and add intercept update support at various points within the KVM code. Also, when handling a VMGEXIT, exceptions are passed back through the GHCB. Since the RDMSR/WRMSR intercepts (may) inject a #GP on error, update the SVM intercepts to handle this for SEV-ES guests. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> [Redo MSR part using the .complete_emulated_msr callback. - Paolo] 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.