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Paolo Bonzini 22b2ca023f KVM x86 fixes and a selftest fix for 6.17-rcN
- Use array_index_nospec() to sanitize the target vCPU ID when handling PV
    IPIs and yields as the ID is guest-controlled.
 
  - Drop a superfluous cpumask_empty() check when reclaiming SEV memory, as
    the common case, by far, is that at least one CPU will have entered the
    VM, and wbnoinvd_on_cpus_mask() will naturally handle the rare case where
    the set of have_run_cpus is empty.
 
  - Rename the is_signed_type() macro in kselftest_harness.h to is_signed_var()
    to fix a collision with linux/overflow.h.  The collision generates compiler
    warnings due to the two macros having different implementations.
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Merge tag 'kvm-x86-fixes-6.17-rc7' of https://github.com/kvm-x86/linux into HEAD

KVM x86 fixes and a selftest fix for 6.17-rcN

 - Use array_index_nospec() to sanitize the target vCPU ID when handling PV
   IPIs and yields as the ID is guest-controlled.

 - Drop a superfluous cpumask_empty() check when reclaiming SEV memory, as
   the common case, by far, is that at least one CPU will have entered the
   VM, and wbnoinvd_on_cpus_mask() will naturally handle the rare case where
   the set of have_run_cpus is empty.

 - Rename the is_signed_type() macro in kselftest_harness.h to is_signed_var()
   to fix a collision with linux/overflow.h.  The collision generates compiler
   warnings due to the two macros having different implementations.
History 2025-08-27 04:18:01 -04:00
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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.