| Message ID | 52e487458c3172923549bbcf9dfccfbe6faea60b.1637940473.git.maciej.szmigiero@oracle.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | KVM: selftests: page_table_test: fix calculation of guest_test_phys_mem | expand |
On 11/26/21 16:28, Maciej S. Szmigiero wrote: > From: "Maciej S. Szmigiero" <maciej.szmigiero@oracle.com> > > A kvm_page_table_test run with its default settings fails on VMX due to > memory region add failure: >> ==== Test Assertion Failure ==== >> lib/kvm_util.c:952: ret == 0 >> pid=10538 tid=10538 errno=17 - File exists >> 1 0x00000000004057d1: vm_userspace_mem_region_add at kvm_util.c:947 >> 2 0x0000000000401ee9: pre_init_before_test at kvm_page_table_test.c:302 >> 3 (inlined by) run_test at kvm_page_table_test.c:374 >> 4 0x0000000000409754: for_each_guest_mode at guest_modes.c:53 >> 5 0x0000000000401860: main at kvm_page_table_test.c:500 >> 6 0x00007f82ae2d8554: ?? ??:0 >> 7 0x0000000000401894: _start at ??:? >> KVM_SET_USER_MEMORY_REGION IOCTL failed, >> rc: -1 errno: 17 >> slot: 1 flags: 0x0 >> guest_phys_addr: 0xc0000000 size: 0x40000000 > > This is because the memory range that this test is trying to add > (0x0c0000000 - 0x100000000) conflicts with LAPIC mapping at 0x0fee00000. > > Looking at the code it seems that guest_test_*phys*_mem variable gets > mistakenly overwritten with guest_test_*virt*_mem while trying to adjust > the former for alignment. > With the correct variable adjusted this test runs successfully. > > Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com> > --- > tools/testing/selftests/kvm/kvm_page_table_test.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tools/testing/selftests/kvm/kvm_page_table_test.c b/tools/testing/selftests/kvm/kvm_page_table_test.c > index 3836322add00..ba1fdc3dcf4a 100644 > --- a/tools/testing/selftests/kvm/kvm_page_table_test.c > +++ b/tools/testing/selftests/kvm/kvm_page_table_test.c > @@ -280,7 +280,7 @@ static struct kvm_vm *pre_init_before_test(enum vm_guest_mode mode, void *arg) > #ifdef __s390x__ > alignment = max(0x100000, alignment); > #endif > - guest_test_phys_mem = align_down(guest_test_virt_mem, alignment); > + guest_test_phys_mem = align_down(guest_test_phys_mem, alignment); > > /* Set up the shared data structure test_args */ > test_args.vm = vm; > Queued, thanks. Paolo
diff --git a/tools/testing/selftests/kvm/kvm_page_table_test.c b/tools/testing/selftests/kvm/kvm_page_table_test.c index 3836322add00..ba1fdc3dcf4a 100644 --- a/tools/testing/selftests/kvm/kvm_page_table_test.c +++ b/tools/testing/selftests/kvm/kvm_page_table_test.c @@ -280,7 +280,7 @@ static struct kvm_vm *pre_init_before_test(enum vm_guest_mode mode, void *arg) #ifdef __s390x__ alignment = max(0x100000, alignment); #endif - guest_test_phys_mem = align_down(guest_test_virt_mem, alignment); + guest_test_phys_mem = align_down(guest_test_phys_mem, alignment); /* Set up the shared data structure test_args */ test_args.vm = vm;