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| author | Marcel Apfelbaum <marcel.a@redhat.com> | 2013-09-16 11:21:14 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2013-10-14 17:11:44 +0300 |
| commit | a1ff8ae0666ffcbe78ae7e28812dd30db6bb7131 (patch) | |
| tree | 79f618d7857094f5cdfd758aa5726ec0ffb83593 /include/exec/memory.h | |
| parent | e26d3e734650640fabd7d95ace4f3a6f88725e0b (diff) | |
| download | qemu-a1ff8ae0666ffcbe78ae7e28812dd30db6bb7131.tar.gz | |
memory: Change MemoryRegion priorities from unsigned to signed
When memory regions overlap, priority can be used to specify
which of them takes priority. By making the priority values signed
rather than unsigned, we make it more convenient to implement
a situation where one "background" region should appear only
where no other region exists: rather than having to explicitly
specify a high priority for all the other regions, we can let them take
the default (zero) priority and specify a negative priority for the
background region.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/exec/memory.h')
| -rw-r--r-- | include/exec/memory.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h index ebe0d24182..480dfbf9da 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -153,7 +153,7 @@ struct MemoryRegion { bool flush_coalesced_mmio; MemoryRegion *alias; hwaddr alias_offset; - unsigned priority; + int priority; bool may_overlap; QTAILQ_HEAD(subregions, MemoryRegion) subregions; QTAILQ_ENTRY(MemoryRegion) subregions_link; @@ -779,7 +779,7 @@ void memory_region_add_subregion(MemoryRegion *mr, void memory_region_add_subregion_overlap(MemoryRegion *mr, hwaddr offset, MemoryRegion *subregion, - unsigned priority); + int priority); /** * memory_region_get_ram_addr: Get the ram address associated with a memory |