Refactor region overlap check in mshv_partition_create_region to use mshv_partition_region_by_gfn for both start and end guest PFNs, replacing manual iteration.
This is a cleaner approach that leverages existing functionality to accurately detect overlapping memory regions. Signed-off-by: Stanislav Kinsburskii <[email protected]> --- drivers/hv/mshv_root_main.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/hv/mshv_root_main.c b/drivers/hv/mshv_root_main.c index 5dfb933da981..ae600b927f49 100644 --- a/drivers/hv/mshv_root_main.c +++ b/drivers/hv/mshv_root_main.c @@ -1086,13 +1086,9 @@ static int mshv_partition_create_region(struct mshv_partition *partition, u64 nr_pages = HVPFN_DOWN(mem->size); /* Reject overlapping regions */ - hlist_for_each_entry(rg, &partition->pt_mem_regions, hnode) { - if (mem->guest_pfn + nr_pages <= rg->start_gfn || - rg->start_gfn + rg->nr_pages <= mem->guest_pfn) - continue; - + if (mshv_partition_region_by_gfn(partition, mem->guest_pfn) || + mshv_partition_region_by_gfn(partition, mem->guest_pfn + nr_pages - 1)) return -EEXIST; - } rg = mshv_region_create(mem->guest_pfn, nr_pages, mem->userspace_addr, mem->flags,
