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21a1416a1c
As pointed out by Jason Baron, when assigning a device to a guest we first set the iommu domain pointer, which enables mapping and unmapping of memory slots to the iommu. This leaves a window where this path is enabled, but we haven't synchronized the iommu mappings to the existing memory slots. Thus a slot being removed at that point could send us down unexpected code paths removing non-existent pinnings and iommu mappings. Take the slots_lock around creating the iommu domain and initial mappings as well as around iommu teardown to avoid this race. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> |
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.. | ||
assigned-dev.c | ||
async_pf.c | ||
async_pf.h | ||
coalesced_mmio.c | ||
coalesced_mmio.h | ||
eventfd.c | ||
ioapic.c | ||
ioapic.h | ||
iodev.h | ||
iommu.c | ||
irq_comm.c | ||
Kconfig | ||
kvm_main.c |