[PATCH v6 2/5] KVM: selftests: Move memslot_perf_test off the 256M ELF load address

["Ritesh Harjani (IBM)" <ritesh.list@gmail.com>]

KVM selftests are built with -fno-PIE/-no-pie so the binary uses fixed
load addresses.
On powerpc64, GNU ld default links at 0x10000000 (256M) which is also
the MEM_GPA, so the identity map trips with the error:
  PTE already present at level: 4 gva: 0x10000000 pte:0xc00000000002018f

Put the test slots at 512M instead which is past the ELF.
e.g. failure w/o this fix:

./memslot_perf_test -s 514
Random seed: 0x423558ef
Testing map performance with 1 runs, 5 seconds each

==== Test Assertion Failure ====
  lib/powerpc/processor.c:235: !pte
  pid=371 tid=371 errno=2 - No such file or directory
     1  0x0000000010018293: virt_arch_pg_map at processor.c:235
     2  0x0000000010008b3f: virt_pg_map at kvm_util.h:1325
     3   (inlined by) virt_map at kvm_util.c:1571
     4  0x0000000010001cab: prepare_vm at memslot_perf_test.c:353
     5   (inlined by) test_execute at memslot_perf_test.c:816
     6   (inlined by) test_loop at memslot_perf_test.c:1062
     7   (inlined by) main at memslot_perf_test.c:1136
     8  0x000000001001d713: __libc_start_call_main at libc-start.o:?
     9  0x000000001001db47: __libc_start_main_impl at ??:?
  PTE already present at level: 4 gva: 0x10000000 pte:0xc00000000002018f

Tested-by: Anushree Mathur <anushree.mathur@linux.ibm.com>
Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
---
 tools/testing/selftests/kvm/Makefile.kvm        | 1 +
 tools/testing/selftests/kvm/memslot_perf_test.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/kvm/Makefile.kvm b/tools/testing/selftests/kvm/Makefile.kvm
index 6e672484a22f..a7ecd7a242a9 100644
--- a/tools/testing/selftests/kvm/Makefile.kvm
+++ b/tools/testing/selftests/kvm/Makefile.kvm
@@ -262,6 +262,7 @@ TEST_GEN_PROGS_powerpc += kvm_binary_stats_test
 TEST_GEN_PROGS_powerpc += kvm_page_table_test
 TEST_GEN_PROGS_powerpc += set_memory_region_test
 TEST_GEN_PROGS_powerpc += memslot_modification_stress_test
+TEST_GEN_PROGS_powerpc += memslot_perf_test
 
 SPLIT_TESTS += arch_timer
 SPLIT_TESTS += get-reg-list
diff --git a/tools/testing/selftests/kvm/memslot_perf_test.c b/tools/testing/selftests/kvm/memslot_perf_test.c
index 844ea9b7bb41..2913a4de4cc9 100644
--- a/tools/testing/selftests/kvm/memslot_perf_test.c
+++ b/tools/testing/selftests/kvm/memslot_perf_test.c
@@ -30,7 +30,7 @@
 #define MEM_EXTRA_SIZE		SZ_64K
 
 #define MEM_SIZE		(SZ_512M + MEM_EXTRA_SIZE)
-#define MEM_GPA			SZ_256M
+#define MEM_GPA			SZ_512M
 #define MEM_AUX_GPA		MEM_GPA
 #define MEM_SYNC_GPA		MEM_AUX_GPA
 #define MEM_TEST_GPA		(MEM_AUX_GPA + MEM_EXTRA_SIZE)
-- 
2.39.5