24 Mar
2023
24 Mar
'23
5:24 p.m.
On Fri, 24 Mar 2023 15:54:24 +0100 Nico Boehr nrb@linux.ibm.com wrote:
Add a selftest for CMMA migration on s390.
The tests cover:
- interaction of dirty tracking and migration mode, see my recent patch "KVM: s390: disable migration mode when dirty tracking is disabled" [1],
- several invalid calls of KVM_S390_GET_CMMA_BITS, for example: invalid flags, CMMA support off, with/without peeking
- ensure KVM_S390_GET_CMMA_BITS initally reports all pages as dirty,
- ensure KVM_S390_GET_CMMA_BITS properly skips over holes in memslots, but also non-dirty pages
Note that without the patch at [1] and the small fix in this series, the selftests will fail.
[1] https://lore.kernel.org/all/20230127140532.230651-2-nrb@linux.ibm.com/
Signed-off-by: Nico Boehr nrb@linux.ibm.com
Reviewed-by: Claudio Imbrenda imbrenda@linux.ibm.com
tools/testing/selftests/kvm/Makefile | 1 + tools/testing/selftests/kvm/s390x/cmma_test.c | 680 ++++++++++++++++++ 2 files changed, 681 insertions(+) create mode 100644 tools/testing/selftests/kvm/s390x/cmma_test.c
diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index 84a627c43795..414d9cc29ecb 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -161,6 +161,7 @@ TEST_GEN_PROGS_s390x = s390x/memop TEST_GEN_PROGS_s390x += s390x/resets TEST_GEN_PROGS_s390x += s390x/sync_regs_test TEST_GEN_PROGS_s390x += s390x/tprot +TEST_GEN_PROGS_s390x += s390x/cmma_test TEST_GEN_PROGS_s390x += demand_paging_test TEST_GEN_PROGS_s390x += dirty_log_test TEST_GEN_PROGS_s390x += kvm_create_max_vcpus diff --git a/tools/testing/selftests/kvm/s390x/cmma_test.c b/tools/testing/selftests/kvm/s390x/cmma_test.c new file mode 100644 index 000000000000..6d0751ea224b --- /dev/null +++ b/tools/testing/selftests/kvm/s390x/cmma_test.c @@ -0,0 +1,680 @@ +// SPDX-License-Identifier: GPL-2.0-only +/*
- Test for s390x CMMA migration
- Copyright IBM Corp. 2023
- Authors:
- Nico Boehr nrb@linux.ibm.com
- */
+#define _GNU_SOURCE /* for program_invocation_short_name */ +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/ioctl.h>
+#include "test_util.h" +#include "kvm_util.h" +#include "kselftest.h"
+#define MAIN_PAGE_COUNT 512
+#define TEST_DATA_PAGE_COUNT 512 +#define TEST_DATA_MEMSLOT 1 +#define TEST_DATA_START_GFN 4096
+#define TEST_DATA_TWO_PAGE_COUNT 256 +#define TEST_DATA_TWO_MEMSLOT 2 +#define TEST_DATA_TWO_START_GFN 8192
+static char cmma_value_buf[MAIN_PAGE_COUNT + TEST_DATA_PAGE_COUNT];
+/**
- Dirty CMMA attributes of exactly one page in the TEST_DATA memslot,
- so use_cmma goes on and the CMMA related ioctls do something.
- */
+static void guest_do_one_essa(void) +{
- asm volatile(
/* load TEST_DATA_START_GFN into r1 */" llilf 1,%[start_gfn]\n"/* calculate the address from the gfn */" sllg 1,1,12(0)\n"/* set the first page in TEST_DATA memslot to STABLE */" .insn rrf,0xb9ab0000,2,1,1,0\n"/* hypercall */" diag 0,0,0x501\n""0: j 0b":: [start_gfn] "L"(TEST_DATA_START_GFN): "r1", "r2", "memory", "cc"- );
+}
+/**
- Touch CMMA attributes of all pages in TEST_DATA memslot. Set them to stable
- state.
- */
+static void guest_dirty_test_data(void) +{
- asm volatile(
/* r1 = TEST_DATA_START_GFN */" xgr 1,1\n"" llilf 1,%[start_gfn]\n"/* r5 = TEST_DATA_PAGE_COUNT */" lghi 5,%[page_count]\n"/* r5 += r1 */"2: agfr 5,1\n"/* r2 = r1 << 12 */"1: sllg 2,1,12(0)\n"/* essa(r4, r2, SET_STABLE) */" .insn rrf,0xb9ab0000,4,2,1,0\n"/* i++ */" agfi 1,1\n"/* if r1 < r5 goto 1 */" cgrjl 1,5,1b\n"/* hypercall */" diag 0,0,0x501\n""0: j 0b":: [start_gfn] "L"(TEST_DATA_START_GFN),[page_count] "L"(TEST_DATA_PAGE_COUNT):/* the counter in our loop over the pages */"r1",/* the calculated page physical address */"r2",/* ESSA output register */"r4",/* last page */"r5","cc", "memory"- );
+}
+static struct kvm_vm *create_vm(void) +{
- return ____vm_create(VM_MODE_DEFAULT);
+}
+static void create_main_memslot(struct kvm_vm *vm) +{
- int i;
- vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS, 0, 0, MAIN_PAGE_COUNT, 0);
- /* set the array of memslots to zero like __vm_create does */
- for (i = 0; i < NR_MEM_REGIONS; i++)
vm->memslots[i] = 0;+}
+static void create_test_memslot(struct kvm_vm *vm) +{
- vm_userspace_mem_region_add(vm,
VM_MEM_SRC_ANONYMOUS,TEST_DATA_START_GFN << vm->page_shift,TEST_DATA_MEMSLOT,TEST_DATA_PAGE_COUNT,0);- vm->memslots[MEM_REGION_TEST_DATA] = TEST_DATA_MEMSLOT;
+}
+static void create_memslots(struct kvm_vm *vm) +{
- /*
* Our VM has the following memory layout:* +------+---------------------------+* | GFN | Memslot |* +------+---------------------------+* | 0 | |* | ... | MAIN (Code, Stack, ...) |* | 511 | |* +------+---------------------------+* | 4096 | |* | ... | TEST_DATA |* | 4607 | |* +------+---------------------------+*/- create_main_memslot(vm);
- create_test_memslot(vm);
+}
+static void finish_vm_setup(struct kvm_vm *vm) +{
- struct userspace_mem_region *slot0;
- kvm_vm_elf_load(vm, program_invocation_name);
- slot0 = memslot2region(vm, 0);
- ucall_init(vm, slot0->region.guest_phys_addr + slot0->region.memory_size);
- kvm_arch_vm_post_create(vm);
+}
+static struct kvm_vm *create_vm_two_memslots(void) +{
- struct kvm_vm *vm;
- vm = create_vm();
- create_memslots(vm);
- finish_vm_setup(vm);
- return vm;
+}
+static void enable_cmma(struct kvm_vm *vm) +{
- int r;
- r = __kvm_device_attr_set(vm->fd, KVM_S390_VM_MEM_CTRL, KVM_S390_VM_MEM_ENABLE_CMMA, NULL);
- TEST_ASSERT(!r, "enabling cmma failed r=%d errno=%d", r, errno);
+}
+static void enable_dirty_tracking(struct kvm_vm *vm) +{
- vm_mem_region_set_flags(vm, 0, KVM_MEM_LOG_DIRTY_PAGES);
- vm_mem_region_set_flags(vm, TEST_DATA_MEMSLOT, KVM_MEM_LOG_DIRTY_PAGES);
+}
+static int __enable_migration_mode(struct kvm_vm *vm) +{
- return __kvm_device_attr_set(vm->fd,
KVM_S390_VM_MIGRATION,KVM_S390_VM_MIGRATION_START,NULL);+}
+static void enable_migration_mode(struct kvm_vm *vm) +{
- int r = __enable_migration_mode(vm);
- TEST_ASSERT(!r, "enabling migration mode failed r=%d errno=%d", r, errno);
+}
+static bool is_migration_mode_on(struct kvm_vm *vm) +{
- u64 out;
- int r;
- r = __kvm_device_attr_get(vm->fd,
KVM_S390_VM_MIGRATION,KVM_S390_VM_MIGRATION_STATUS,&out);- TEST_ASSERT(!r, "getting migration mode status failed r=%d errno=%d", r, errno);
- return out;
+}
+static int vm_get_cmma_bits(struct kvm_vm *vm, u64 flags, int *errno_out) +{
- struct kvm_s390_cmma_log args;
- int rc;
- errno = 0;
- args = (struct kvm_s390_cmma_log){
.start_gfn = 0,.count = sizeof(cmma_value_buf),.flags = flags,.values = (__u64)&cmma_value_buf[0]- };
- rc = __vm_ioctl(vm, KVM_S390_GET_CMMA_BITS, &args);
- *errno_out = errno;
- return rc;
+}
+static void test_get_cmma_basic(void) +{
- struct kvm_vm *vm = create_vm_two_memslots();
- struct kvm_vcpu *vcpu;
- int rc, errno_out;
- /* GET_CMMA_BITS without CMMA enabled should fail */
- rc = vm_get_cmma_bits(vm, 0, &errno_out);
- ASSERT_EQ(rc, -1);
- ASSERT_EQ(errno_out, ENXIO);
- enable_cmma(vm);
- vcpu = vm_vcpu_add(vm, 1, guest_do_one_essa);
- vcpu_run(vcpu);
- /* GET_CMMA_BITS without migration mode and without peeking should fail */
- rc = vm_get_cmma_bits(vm, 0, &errno_out);
- ASSERT_EQ(rc, -1);
- ASSERT_EQ(errno_out, EINVAL);
- /* GET_CMMA_BITS without migration mode and with peeking should work */
- rc = vm_get_cmma_bits(vm, KVM_S390_CMMA_PEEK, &errno_out);
- ASSERT_EQ(rc, 0);
- ASSERT_EQ(errno_out, 0);
- enable_dirty_tracking(vm);
- enable_migration_mode(vm);
- /* GET_CMMA_BITS with invalid flags */
- rc = vm_get_cmma_bits(vm, 0xfeedc0fe, &errno_out);
- ASSERT_EQ(rc, -1);
- ASSERT_EQ(errno_out, EINVAL);
- kvm_vm_free(vm);
+}
+static void assert_exit_was_hypercall(struct kvm_vcpu *vcpu) +{
- ASSERT_EQ(vcpu->run->exit_reason, 13);
- ASSERT_EQ(vcpu->run->s390_sieic.icptcode, 4);
- ASSERT_EQ(vcpu->run->s390_sieic.ipa, 0x8300);
- ASSERT_EQ(vcpu->run->s390_sieic.ipb, 0x5010000);
+}
+static void test_migration_mode(void) +{
- struct kvm_vm *vm = create_vm();
- struct kvm_vcpu *vcpu;
- u64 orig_psw;
- int rc;
- /* enabling migration mode on a VM without memory should fail */
- rc = __enable_migration_mode(vm);
- ASSERT_EQ(rc, -1);
- ASSERT_EQ(errno, EINVAL);
- TEST_ASSERT(!is_migration_mode_on(vm), "migration mode should still be off");
- errno = 0;
- create_memslots(vm);
- finish_vm_setup(vm);
- enable_cmma(vm);
- vcpu = vm_vcpu_add(vm, 1, guest_do_one_essa);
- orig_psw = vcpu->run->psw_addr;
- /*
* Execute one essa instruction in the guest. Otherwise the guest will* not have use_cmm enabled and GET_CMMA_BITS will return no pages.*/- vcpu_run(vcpu);
- assert_exit_was_hypercall(vcpu);
- /* migration mode when memslots have dirty tracking off should fail */
- rc = __enable_migration_mode(vm);
- ASSERT_EQ(rc, -1);
- ASSERT_EQ(errno, EINVAL);
- TEST_ASSERT(!is_migration_mode_on(vm), "migration mode should still be off");
- errno = 0;
- /* enable dirty tracking */
- enable_dirty_tracking(vm);
- /* enabling migration mode should work now */
- rc = __enable_migration_mode(vm);
- ASSERT_EQ(rc, 0);
- TEST_ASSERT(is_migration_mode_on(vm), "migration mode should be on");
- errno = 0;
- /* execute another ESSA instruction to see this goes fine */
- vcpu->run->psw_addr = orig_psw;
- vcpu_run(vcpu);
- assert_exit_was_hypercall(vcpu);
- /*
* With migration mode on, create a new memslot with dirty tracking off.* This should turn off migration mode.*/- TEST_ASSERT(is_migration_mode_on(vm), "migration mode should be on");
- vm_userspace_mem_region_add(vm,
VM_MEM_SRC_ANONYMOUS,TEST_DATA_TWO_START_GFN << vm->page_shift,TEST_DATA_TWO_MEMSLOT,TEST_DATA_TWO_PAGE_COUNT,0);- TEST_ASSERT(!is_migration_mode_on(vm),
"creating memslot without dirty tracking turns off migration mode");- /* ESSA instructions should still execute fine */
- vcpu->run->psw_addr = orig_psw;
- vcpu_run(vcpu);
- assert_exit_was_hypercall(vcpu);
- /*
* Turn on dirty tracking on the new memslot.* It should be possible to turn migration mode back on again.*/- vm_mem_region_set_flags(vm, TEST_DATA_TWO_MEMSLOT, KVM_MEM_LOG_DIRTY_PAGES);
- rc = __enable_migration_mode(vm);
- ASSERT_EQ(rc, 0);
- TEST_ASSERT(is_migration_mode_on(vm), "migration mode should be on");
- errno = 0;
- /*
* Turn off dirty tracking again, this time with just a flag change.* Again, migration mode should turn off.*/- TEST_ASSERT(is_migration_mode_on(vm), "migration mode should be on");
- vm_mem_region_set_flags(vm, TEST_DATA_TWO_MEMSLOT, 0);
- TEST_ASSERT(!is_migration_mode_on(vm),
"disabling dirty tracking should turn off migration mode");- /* ESSA instructions should still execute fine */
- vcpu->run->psw_addr = orig_psw;
- vcpu_run(vcpu);
- assert_exit_was_hypercall(vcpu);
- kvm_vm_free(vm);
+}
+/**
- Given a VM with the MAIN and TEST_DATA memslot, assert that both slots have
- CMMA attributes of all pages in both memslots and nothing more dirty.
- This has the useful side effect of ensuring nothing is CMMA dirty after this
- function.
- */
+static void assert_all_slots_cmma_dirty(struct kvm_vm *vm) +{
- struct kvm_s390_cmma_log args;
- /*
* First iteration - everything should be dirty.* Start at the main memslot...*/- args = (struct kvm_s390_cmma_log){
.start_gfn = 0,.count = sizeof(cmma_value_buf),.flags = 0,.values = (__u64)&cmma_value_buf[0]- };
- memset(cmma_value_buf, 0xff, sizeof(cmma_value_buf));
- vm_ioctl(vm, KVM_S390_GET_CMMA_BITS, &args);
- ASSERT_EQ(args.count, MAIN_PAGE_COUNT);
- ASSERT_EQ(args.remaining, TEST_DATA_PAGE_COUNT);
- ASSERT_EQ(args.start_gfn, 0);
- /* ...and then - after a hole - the TEST_DATA memslot should follow */
- args = (struct kvm_s390_cmma_log){
.start_gfn = MAIN_PAGE_COUNT,.count = sizeof(cmma_value_buf),.flags = 0,.values = (__u64)&cmma_value_buf[0]- };
- memset(cmma_value_buf, 0xff, sizeof(cmma_value_buf));
- vm_ioctl(vm, KVM_S390_GET_CMMA_BITS, &args);
- ASSERT_EQ(args.count, TEST_DATA_PAGE_COUNT);
- ASSERT_EQ(args.start_gfn, TEST_DATA_START_GFN);
- ASSERT_EQ(args.remaining, 0);
- /* ...and nothing else should be there */
- args = (struct kvm_s390_cmma_log){
.start_gfn = TEST_DATA_START_GFN + TEST_DATA_PAGE_COUNT,.count = sizeof(cmma_value_buf),.flags = 0,.values = (__u64)&cmma_value_buf[0]- };
- memset(cmma_value_buf, 0xff, sizeof(cmma_value_buf));
- vm_ioctl(vm, KVM_S390_GET_CMMA_BITS, &args);
- ASSERT_EQ(args.count, 0);
- ASSERT_EQ(args.start_gfn, 0);
- ASSERT_EQ(args.remaining, 0);
+}
+/**
- Given a VM, assert no pages are CMMA dirty.
- */
+static void assert_no_pages_cmma_dirty(struct kvm_vm *vm) +{
- struct kvm_s390_cmma_log args;
- /* If we start from GFN 0 again, nothing should be dirty. */
- args = (struct kvm_s390_cmma_log){
.start_gfn = 0,.count = sizeof(cmma_value_buf),.flags = 0,.values = (__u64)&cmma_value_buf[0]- };
- memset(cmma_value_buf, 0xff, sizeof(cmma_value_buf));
- vm_ioctl(vm, KVM_S390_GET_CMMA_BITS, &args);
- if (args.count || args.remaining || args.start_gfn)
TEST_FAIL("pages are still dirty start_gfn=0x%llx count=%u remaining=%llu",args.start_gfn,args.count,args.remaining);+}
+static void test_get_inital_dirty(void) +{
- struct kvm_vm *vm = create_vm_two_memslots();
- struct kvm_vcpu *vcpu;
- enable_cmma(vm);
- vcpu = vm_vcpu_add(vm, 1, guest_do_one_essa);
- /*
* Execute one essa instruction in the guest. Otherwise the guest will* not have use_cmm enabled and GET_CMMA_BITS will return no pages.*/- vcpu_run(vcpu);
- assert_exit_was_hypercall(vcpu);
- enable_dirty_tracking(vm);
- enable_migration_mode(vm);
- assert_all_slots_cmma_dirty(vm);
- /* Start from the beginning again and make sure nothing else is dirty */
- assert_no_pages_cmma_dirty(vm);
- kvm_vm_free(vm);
+}
+static void query_cmma_range(struct kvm_vm *vm,
u64 start_gfn, u64 gfn_count,struct kvm_s390_cmma_log *res_out)+{
- *res_out = (struct kvm_s390_cmma_log){
.start_gfn = start_gfn,.count = gfn_count,.flags = 0,.values = (__u64)&cmma_value_buf[0]- };
- memset(cmma_value_buf, 0xff, sizeof(cmma_value_buf));
- vm_ioctl(vm, KVM_S390_GET_CMMA_BITS, res_out);
+}
+/**
- Assert the given cmma_log struct that was executed by query_cmma_range()
- indicates the first dirty gfn is at first_dirty_gfn and contains exactly
- dirty_gfn_count CMMA values.
- */
+static void assert_cmma_dirty(u64 first_dirty_gfn,
u64 dirty_gfn_count,const struct kvm_s390_cmma_log *res)+{
- ASSERT_EQ(res->start_gfn, first_dirty_gfn);
- ASSERT_EQ(res->count, dirty_gfn_count);
- for (size_t i = 0; i < dirty_gfn_count; i++)
ASSERT_EQ(cmma_value_buf[0], 0x0); /* stable state */- ASSERT_EQ(cmma_value_buf[dirty_gfn_count], 0xff); /* not touched */
+}
+static void test_get_skip_holes(void) +{
- size_t gfn_offset;
- struct kvm_vm *vm = create_vm_two_memslots();
- struct kvm_s390_cmma_log log;
- struct kvm_vcpu *vcpu;
- u64 orig_psw;
- enable_cmma(vm);
- vcpu = vm_vcpu_add(vm, 1, guest_dirty_test_data);
- orig_psw = vcpu->run->psw_addr;
- /*
* Execute some essa instructions in the guest. Otherwise the guest will* not have use_cmm enabled and GET_CMMA_BITS will return no pages.*/- vcpu_run(vcpu);
- assert_exit_was_hypercall(vcpu);
- enable_dirty_tracking(vm);
- enable_migration_mode(vm);
- /* un-dirty all pages */
- assert_all_slots_cmma_dirty(vm);
- /* Then, dirty just the TEST_DATA memslot */
- vcpu->run->psw_addr = orig_psw;
- vcpu_run(vcpu);
- gfn_offset = TEST_DATA_START_GFN;
- /**
* Query CMMA attributes of one page, starting at page 0. Since the* main memslot was not touched by the VM, this should yield the first* page of the TEST_DATA memslot.* The dirty bitmap should now look like this:* 0: not dirty* [0x1, 0x200): dirty*/- query_cmma_range(vm, 0, 1, &log);
- assert_cmma_dirty(gfn_offset, 1, &log);
- gfn_offset++;
- /**
* Query CMMA attributes of 32 (0x20) pages past the end of the TEST_DATA* memslot. This should wrap back to the beginning of the TEST_DATA* memslot, page 1.* The dirty bitmap should now look like this:* [0, 0x21): not dirty* [0x21, 0x200): dirty*/- query_cmma_range(vm, TEST_DATA_START_GFN + TEST_DATA_PAGE_COUNT, 0x20, &log);
- assert_cmma_dirty(gfn_offset, 0x20, &log);
- gfn_offset += 0x20;
- /* Skip 32 pages */
- gfn_offset += 0x20;
- /**
* After skipping 32 pages, query the next 32 (0x20) pages.* The dirty bitmap should now look like this:* [0, 0x21): not dirty* [0x21, 0x41): dirty* [0x41, 0x61): not dirty* [0x61, 0x200): dirty*/- query_cmma_range(vm, gfn_offset, 0x20, &log);
- assert_cmma_dirty(gfn_offset, 0x20, &log);
- gfn_offset += 0x20;
- /**
* Query 1 page from the beginning of the TEST_DATA memslot. This should* yield page 0x21.* The dirty bitmap should now look like this:* [0, 0x22): not dirty* [0x22, 0x41): dirty* [0x41, 0x61): not dirty* [0x61, 0x200): dirty*/- query_cmma_range(vm, TEST_DATA_START_GFN, 1, &log);
- assert_cmma_dirty(TEST_DATA_START_GFN + 0x21, 1, &log);
- gfn_offset++;
- /**
* Query 15 (0xF) pages from page 0x23 in TEST_DATA memslot.* This should yield pages [0x23, 0x33).* The dirty bitmap should now look like this:* [0, 0x22): not dirty* 0x22: dirty* [0x23, 0x33): not dirty* [0x33, 0x41): dirty* [0x41, 0x61): not dirty* [0x61, 0x200): dirty*/- gfn_offset = TEST_DATA_START_GFN + 0x23;
- query_cmma_range(vm, gfn_offset, 15, &log);
- assert_cmma_dirty(gfn_offset, 15, &log);
- /**
* Query 17 (0x11) pages from page 0x22 in TEST_DATA memslot.* This should yield page [0x22, 0x33)* The dirty bitmap should now look like this:* [0, 0x33): not dirty* [0x33, 0x41): dirty* [0x41, 0x61): not dirty* [0x61, 0x200): dirty*/- gfn_offset = TEST_DATA_START_GFN + 0x22;
- query_cmma_range(vm, gfn_offset, 17, &log);
- assert_cmma_dirty(gfn_offset, 17, &log);
- /**
* Query 25 (0x19) pages from page 0x40 in TEST_DATA memslot.* This should yield page 0x40 and nothing more, since there are more* than 16 non-dirty pages after page 0x40.* The dirty bitmap should now look like this:* [0, 0x33): not dirty* [0x33, 0x40): dirty* [0x40, 0x61): not dirty* [0x61, 0x200): dirty*/- gfn_offset = TEST_DATA_START_GFN + 0x40;
- query_cmma_range(vm, gfn_offset, 25, &log);
- assert_cmma_dirty(gfn_offset, 1, &log);
- /**
* Query pages [0x33, 0x40).* The dirty bitmap should now look like this:* [0, 0x61): not dirty* [0x61, 0x200): dirty*/- gfn_offset = TEST_DATA_START_GFN + 0x33;
- query_cmma_range(vm, gfn_offset, 0x40 - 0x33, &log);
- assert_cmma_dirty(gfn_offset, 0x40 - 0x33, &log);
- /**
* Query the remaining pages [0x61, 0x200).*/- gfn_offset = TEST_DATA_START_GFN;
- query_cmma_range(vm, gfn_offset, TEST_DATA_PAGE_COUNT - 0x61, &log);
- assert_cmma_dirty(TEST_DATA_START_GFN + 0x61, TEST_DATA_PAGE_COUNT - 0x61, &log);
- assert_no_pages_cmma_dirty(vm);
+}
+struct testdef {
- const char *name;
- void (*test)(void);
+} testlist[] = {
- { "migration mode and dirty tracking", test_migration_mode },
- { "GET_CMMA_BITS: basic calls", test_get_cmma_basic },
- { "GET_CMMA_BITS: all pages are dirty initally", test_get_inital_dirty },
- { "GET_CMMA_BITS: holes are skipped", test_get_skip_holes },
+};
+int main(int argc, char *argv[]) +{
- int idx;
- TEST_REQUIRE(kvm_has_cap(KVM_CAP_SYNC_REGS));
- TEST_REQUIRE(kvm_has_cap(KVM_CAP_S390_CMMA_MIGRATION));
- ksft_print_header();
- ksft_set_plan(ARRAY_SIZE(testlist));
- for (idx = 0; idx < ARRAY_SIZE(testlist); idx++) {
testlist[idx].test();ksft_test_result_pass("%s\n", testlist[idx].name);- }
- ksft_finished(); /* Print results and exit() accordingly */
+}