4e103134b8
Modify kvm_mmu_invalidate_zap_pages_in_memslot(), a.k.a. the x86 MMU's handler for kvm_arch_flush_shadow_memslot(), to zap only the pages/PTEs that actually belong to the memslot being removed. This improves performance, especially why the deleted memslot has only a few shadow entries, or even no entries. E.g. a microbenchmark to access regular memory while concurrently reading PCI ROM to trigger memslot deletion showed a 5% improvement in throughput. Cc: Xiao Guangrong <guangrong.xiao@gmail.com> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.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 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.