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cd758a9b57
This makes the same changes in the page fault handler for HPT guests that commits31c8b0d069("KVM: PPC: Book3S HV: Use __gfn_to_pfn_memslot() in page fault handler", 2018-03-01),71d29f43b6("KVM: PPC: Book3S HV: Don't use compound_order to determine host mapping size", 2018-09-11) and6579804c43("KVM: PPC: Book3S HV: Avoid crash from THP collapse during radix page fault", 2018-10-04) made for the page fault handler for radix guests. In summary, where we used to call get_user_pages_fast() and then do special handling for VM_PFNMAP vmas, we now call __get_user_pages_fast() and then __gfn_to_pfn_memslot() if that fails, followed by reading the Linux PTE to get the host PFN, host page size and mapping attributes. This also brings in the change from SetPageDirty() to set_page_dirty_lock() which was done for the radix page fault handler in commitc3856aeb29("KVM: PPC: Book3S HV: Fix handling of large pages in radix page fault handler", 2018-02-23). Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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.