Files
cloud-hypervisor/vmm
CMGS e65cca3bf5 vmm: roll back mem64/IO allocator on failed move_bar
After free(old_base), if allocate(new_base) fails the allocator
treats old_base as free even though the MMIO/PIO bus still maps the
device there. Subsequent allocations pick old_base, mmio_bus.insert
hits the live mapping and returns Overlap.

Restore old_base on the failure path in both the Memory*BitRegion
and IoRegion branches before bubbling the error up.

PR #7950 added restore_bar_addr() so the BAR config register stays
consistent on failed move_bar(); this completes the same picture
for the allocator side.

Signed-off-by: CMGS <ilskdw@gmail.com>
2026-05-14 15:54:12 +00:00
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