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pci: vfio_user: Create user memory regions based on sparse areas

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Signed-off-by: Bo Chen <chen.bo@intel.com>
This commit is contained in:
Bo Chen 2022-04-28 14:55:17 -07:00 committed by Sebastien Boeuf
parent b9fb849b83
commit 25a38b25c4
1 changed files with 27 additions and 6 deletions
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25
pci/src/vfio_user.rs
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@ -146,6 +146,15 @@ impl VfioUserPciDevice {
.file_offset
.clone();
let sparse_areas = self
.client
.lock()
.unwrap()
.region(mmio_region.index)
.unwrap()
.sparse_areas
.clone();
if region_flags & VFIO_REGION_INFO_FLAG_MMAP != 0 {
let mut prot = 0;
if region_flags & VFIO_REGION_INFO_FLAG_READ != 0 {
@ -174,12 +183,24 @@ impl VfioUserPciDevice {
continue;
}
let user_memory_regions = vec![UserMemoryRegion {
let mut user_memory_regions = Vec::new();
if sparse_areas.is_empty() {
user_memory_regions.push(UserMemoryRegion {
slot: mem_slot(),
start: mmio_region.start.0,
size: mmio_region.length as u64,
host_addr: host_addr as u64,
}];
})
} else {
for s in sparse_areas.iter() {
user_memory_regions.push(UserMemoryRegion {
slot: mem_slot(),
start: mmio_region.start.0 + s.offset,
size: s.size,
host_addr: host_addr as u64 + s.offset,
});
}
};
for user_memory_region in user_memory_regions.iter() {
let mem_region = vm.make_user_memory_region(