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a2b00f85d7
The Xen emulation in KVM modifies certain CPUID leaves to expose TSC information to the guest. Previously, these CPUID leaves were updated whenever guest time changed, but this conflicts with KVM_SET_CPUID/KVM_SET_CPUID2 ioctls which reject changes to CPUID entries on running vCPUs. Fix this by updating the TSC information directly in the CPUID emulation handler instead of modifying the vCPU's CPUID entries. Signed-off-by: Fred Griffoul <fgriffo@amazon.co.uk> Reviewed-by: Paul Durrant <paul@xen.org> Reviewed-by: David Woodhouse <dwmw@amazon.co.uk> Link: https://lore.kernel.org/r/20250124150539.69975-1-fgriffo@amazon.co.uk Signed-off-by: Sean Christopherson <seanjc@google.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 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.