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kvm: selftests: Fix region overlap check in kvm_util 

Fix a call to userspace_mem_region_find to conform to its spec of
taking an inclusive, inclusive range. It was previously being called
with an inclusive, exclusive range. Also remove a redundant region bounds
check in vm_userspace_mem_region_add. Region overlap checking is already
performed by the call to userspace_mem_region_find.

Tested: Compiled tools/testing/selftests/kvm with -static
	Ran all resulting test binaries on an Intel Haswell test machine
	All tests passed

Signed-off-by: Ben Gardon <bgardon@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Ben Gardon 2019-01-16 09:41:15 -08:00 committed by Paolo Bonzini
parent 8997f65700
commit 94a980c39c
1 changed files with 2 additions and 7 deletions
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9
tools/testing/selftests/kvm/lib/kvm_util.c
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@ -571,7 +571,7 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm,
* already exist.
*/
region = (struct userspace_mem_region *) userspace_mem_region_find(
vm, guest_paddr, guest_paddr + npages * vm->page_size);
vm, guest_paddr, (guest_paddr + npages * vm->page_size) - 1);
if (region != NULL)
TEST_ASSERT(false, "overlapping userspace_mem_region already "
"exists\n"
@ -587,15 +587,10 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm,
region = region->next) {
if (region->region.slot == slot)
break;
if ((guest_paddr <= (region->region.guest_phys_addr
+ region->region.memory_size))
&& ((guest_paddr + npages * vm->page_size)
>= region->region.guest_phys_addr))
break;
}
if (region != NULL)
TEST_ASSERT(false, "A mem region with the requested slot "
"or overlapping physical memory range already exists.\n"
"already exists.\n"
" requested slot: %u paddr: 0x%lx npages: 0x%lx\n"
" existing slot: %u paddr: 0x%lx size: 0x%lx",
slot, guest_paddr, npages,