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| author | Paul Mackerras <paulus@ozlabs.org> | 2017-01-30 13:21:48 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-01-31 11:11:50 +0300 |
| commit | 8f7b79b8379a85fb8dd0c3f42d9f452ec5552161 (patch) | |
| tree | 017e423360269c9b86e218719a7ad5c237e9c88a /kernel/kexec_core.c | |
| parent | 01756099e0a5f431bbada9693d566269acfb51f9 (diff) | |
| download | linux-8f7b79b8379a85fb8dd0c3f42d9f452ec5552161.tar.xz | |
KVM: PPC: Book3S HV: Implement dirty page logging for radix guests
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>
Diffstat (limited to 'kernel/kexec_core.c')
0 files changed, 0 insertions, 0 deletions