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The original name was vague regarding its functionality. This Kconfig option specifically enables and gates the kvm_gmem_populate() function, which is responsible for populating a GPA range with guest data. The new name, HAVE_KVM_ARCH_GMEM_POPULATE, describes the purpose of the option: to enable arch-specific guest_memfd population mechanisms. It also follows the same pattern as the other HAVE_KVM_ARCH_* configuration options. This improves clarity for developers and ensures the name accurately reflects the functionality it controls, especially as guest_memfd support expands beyond purely "private" memory scenarios. Temporarily keep KVM_GENERIC_PRIVATE_MEM as an x86-only config so as to minimize churn, and to hopefully make it easier to see what features require HAVE_KVM_ARCH_GMEM_POPULATE. On that note, omit GMEM_POPULATE for KVM_X86_SW_PROTECTED_VM, as regular ol' memset() suffices for software-protected VMs. As for KVM_GENERIC_PRIVATE_MEM, a future change will select KVM_GUEST_MEMFD for all 64-bit KVM builds, at which point the intermediate config will become obsolete and can/will be dropped. Reviewed-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Gavin Shan <gshan@redhat.com> Reviewed-by: Shivank Garg <shivankg@amd.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Co-developed-by: David Hildenbrand <david@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Signed-off-by: Fuad Tabba <tabba@google.com> Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com> Co-developed-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Sean Christopherson <seanjc@google.com> Message-ID: <20250729225455.670324-6-seanjc@google.com> 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 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.