On 13/12/22 01:16, Sean Christopherson wrote:
Check that the number of pages per slot is non-zero in get_max_slots() prior to computing the remaining number of pages. clang generates code that uses an actual DIV for calculating the remaining, which causes a #DE if the total number of pages is less than the number of slots. traps: memslot_perf_te[97611] trap divide error ip:4030c4 sp:7ffd18ae58f0 error:0 in memslot_perf_test[401000+cb000] Fixes: a69170c65acd ("KVM: selftests: memslot_perf_test: Report optimal memory slots") Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx> --- tools/testing/selftests/kvm/memslot_perf_test.c | 3 +++ 1 file changed, 3 insertions(+)
Reviewed-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>