Files
cloud-hypervisor/vmm
Paolo Bonzini 0463f4f156 vmm: use MmapRegion::bitmap() directly
For use in QEMU, I would like GuestMemoryRegion to return a BitmapSlice
instead of a &Bitmap.  This adds some flexibility that QEMU needs in
order to support a single global dirty bitmap that is sliced by the
various GuestMemoryRegions.

However, this removes access to the methods of AtomicBitmap, and in
particular reset() and get_and_reset().  Fortunately, cloud-hypervisor
always uses GuestMemoryMmap, and therefore `region` is known to be a
&GuestRegionMmap.  Dereferencing it returns the MmapRegion to which the
bitmap is attached, thus calling MmapRegion::bitmap(); this has the
same effect as `<GuestRegionMmap as GuestRegion>::bitmap()`, and works
both with or without https://github.com/rust-vmm/vm-memory/pull/324.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-05-21 13:00:07 +00:00
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