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This adds code to keep track of dirty pages when requested (that is, when memslot->dirty_bitmap is non-NULL) for radix guests. We use the dirty bits in the PTEs in the second-level (partition-scoped) page tables, together with a bitmap of pages that were dirty when their PTE was invalidated (e.g., when the page was paged out). This bitmap is stored in the first half of the memslot->dirty_bitmap area, and kvm_vm_ioctl_get_dirty_log_hv() now uses the second half for the bitmap that gets returned to userspace. Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.