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7ae15e2f69
TDX 1.0 defines baseline behaviour of TDX guest platform. TDX 1.0 generates a #VE when accessing topology-related CPUID leafs (0xB and 0x1F) and the X2APIC_APICID MSR. The kernel returns all zeros on CPUID topology. In practice, this means that the kernel can only boot with a plain topology. Any complications will cause problems. The ENUM_TOPOLOGY feature allows the VMM to provide topology information to the guest. Enabling the feature eliminates topology-related #VEs: the TDX module virtualizes accesses to the CPUID leafs and the MSR. Enable ENUM_TOPOLOGY if it is available. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Kai Huang <kai.huang@intel.com> Link: https://lore.kernel.org/all/20241104103803.195705-5-kirill.shutemov%40linux.intel.com |
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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.