2b9663d8a1
Pass the address space ID to TDP MMU's primary "zap gfn range" helper to allow the MMU notifier paths to iterate over memslots exactly once. Currently, both the legacy MMU and TDP MMU iterate over memslots when looking for an overlapping hva range, which can be quite costly if there are a large number of memslots. Add a "flush" parameter so that iterating over multiple address spaces in the caller will continue to do the right thing when yielding while a flush is pending from a previous address space. Note, this also has a functional change in the form of coalescing TLB flushes across multiple address spaces in kvm_zap_gfn_range(), and also optimizes the TDP MMU to utilize range-based flushing when running as L1 with Hyper-V enlightenments. Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20210326021957.1424875-6-seanjc@google.com> [Keep separate for loops to prepare for other incoming patches. - Paolo] 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.