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| author | Alexander Bulekov | 2021-03-15 15:05:11 +0100 |
|---|---|---|
| committer | Paolo Bonzini | 2021-03-16 19:30:30 +0100 |
| commit | 25d309fb0d6c07e49c3d9250cdbacc16941d988e (patch) | |
| tree | 48d36634c66bd2a1ae63de07156c25a726b6f558 /softmmu/memory.c | |
| parent | memory: add a sparse memory device for fuzzing (diff) | |
| download | qemu-25d309fb0d6c07e49c3d9250cdbacc16941d988e.tar.gz qemu-25d309fb0d6c07e49c3d9250cdbacc16941d988e.tar.xz qemu-25d309fb0d6c07e49c3d9250cdbacc16941d988e.zip | |
fuzz: configure a sparse-mem device, by default
The generic-fuzzer often provides randomized DMA addresses to
virtual-devices. For a 64-bit address-space, the chance of these
randomized addresses coinciding with RAM regions, is fairly small. Even
though the fuzzer's instrumentation eventually finds valid addresses,
this can take some-time, and slows-down fuzzing progress (especially,
when multiple DMA buffers are involved). To work around this, create
"fake" sparse-memory that spans all of the 64-bit address-space. Adjust
the DMA call-back to populate this sparse memory, correspondingly
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'softmmu/memory.c')
0 files changed, 0 insertions, 0 deletions