On Thu, 13 Oct 2022 14:30:20 +0800, Gavin Shan wrote:
> It's required by vm_userspace_mem_region_add() that memory size
> should be aligned to host page size. However, one guest page is
> provided by memslot_modification_stress_test. It triggers failure
> in the scenario of 64KB-page-size-host and 4KB-page-size-guest,
> as the following messages indicate.
>
> # ./memslot_modification_stress_test
> Testing guest mode: PA-bits:40, VA-bits:48, 4K pages
> guest physical test memory: [0xffbfff0000, 0xffffff0000)
> Finished creating vCPUs
> Started all vCPUs
> ==== Test Assertion Failure ====
> lib/kvm_util.c:824: vm_adjust_num_guest_pages(vm->mode, npages) == npages
> pid=5712 tid=5712 errno=0 - Success
> 1 0x0000000000404eeb: vm_userspace_mem_region_add at kvm_util.c:822
> 2 0x0000000000401a5b: add_remove_memslot at memslot_modification_stress_test.c:82
> 3 (inlined by) run_test at memslot_modification_stress_test.c:110
> 4 0x0000000000402417: for_each_guest_mode at guest_modes.c:100
> 5 0x00000000004016a7: main at memslot_modification_stress_test.c:187
> 6 0x0000ffffb8cd4383: ?? ??:0
> 7 0x0000000000401827: _start at :?
> Number of guest pages is not compatible with the host. Try npages=16
>
> [...]
Applied to fixes, thanks!
[1/1] KVM: selftests: Fix number of pages for memory slot in memslot_modification_stress_test
commit: 05c2224d4b049406b0545a10be05280ff4b8ba0a
Cheers,
M.
--
Without deviation from the norm, progress is not possible.
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