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| author | Alexander Bulekov <alxndr@bu.edu> | 2021-03-15 10:05:10 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-03-16 14:30:30 -0400 |
| commit | 230376d285b38f5b83882ebdd2e0d0570431dd09 (patch) | |
| tree | ab179fb04da2c021b4e140879185a612c772db56 /hw/mem/meson.build | |
| parent | d7da0e560128e56f55a2f1f27fa66dd8c5db446c (diff) | |
| download | focaccia-qemu-230376d285b38f5b83882ebdd2e0d0570431dd09.tar.gz focaccia-qemu-230376d285b38f5b83882ebdd2e0d0570431dd09.zip | |
memory: add a sparse memory device for fuzzing
For testing, it can be useful to simulate an enormous amount of memory (e.g. 2^64 RAM). This adds an MMIO device that acts as sparse memory. When something writes a nonzero value to a sparse-mem address, we allocate a block of memory. For now, since the only user of this device is the fuzzer, we do not track and free zeroed blocks. The device has a very low priority (so it can be mapped beneath actual RAM, and virtual device MMIO regions). 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 'hw/mem/meson.build')
| -rw-r--r-- | hw/mem/meson.build | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/mem/meson.build b/hw/mem/meson.build index 0d22f2b572..ef79e04678 100644 --- a/hw/mem/meson.build +++ b/hw/mem/meson.build @@ -1,5 +1,6 @@ mem_ss = ss.source_set() mem_ss.add(files('memory-device.c')) +mem_ss.add(when: 'CONFIG_FUZZ', if_true: files('sparse-mem.c')) mem_ss.add(when: 'CONFIG_DIMM', if_true: files('pc-dimm.c')) mem_ss.add(when: 'CONFIG_NPCM7XX', if_true: files('npcm7xx_mc.c')) mem_ss.add(when: 'CONFIG_NVDIMM', if_true: files('nvdimm.c')) |