korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-13 22:14:20 +08:00
Code Issues Packages Projects Releases Wiki Activity

KVM: s390: selftests: Add named stages for memop test

Browse Source 
The stages synchronize guest and host execution.
This helps the reader and constraits the execution of the test -- if the
observed staging differs from the expected the test fails.

Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Link: https://lore.kernel.org/r/20220308125841.3271721-4-scgl@linux.ibm.com
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
This commit is contained in:
Janis Schoetterl-Glausch 2022-03-08 13:58:39 +01:00 committed by Christian Borntraeger
parent 4eb562ab99
commit c4816a1b7f
1 changed files with 33 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
tools/testing/selftests/kvm/s390x/memop.c
View File

@ -218,10 +218,32 @@ static struct test_default test_default_init(void *guest_code)
return t;
}
enum stage {
/* Synced state set by host, e.g. DAT */
STAGE_INITED,
/* Guest did nothing */
STAGE_IDLED,
/* Guest copied memory (locations up to test case) */
STAGE_COPIED,
};
#define HOST_SYNC(vcpu_p, stage) \
({ \
struct test_vcpu __vcpu = (vcpu_p); \
struct ucall uc; \
int __stage = (stage); \
\
vcpu_run(__vcpu.vm, __vcpu.id); \
get_ucall(__vcpu.vm, __vcpu.id, &uc); \
ASSERT_EQ(uc.cmd, UCALL_SYNC); \
ASSERT_EQ(uc.args[1], __stage); \
}) \
static void guest_copy(void)
{
GUEST_SYNC(STAGE_INITED);
memcpy(&mem2, &mem1, sizeof(mem2));
GUEST_SYNC(0);
GUEST_SYNC(STAGE_COPIED);
}
static void test_copy(void)
@ -232,16 +254,13 @@ static void test_copy(void)
for (i = 0; i < sizeof(mem1); i++)
mem1[i] = i * i + i;
HOST_SYNC(t.vcpu, STAGE_INITED);
/* Set the first array */
MOP(t.vcpu, LOGICAL, WRITE, mem1, t.size,
GADDR(addr_gva2gpa(t.kvm_vm, (uintptr_t)mem1)));
MOP(t.vcpu, LOGICAL, WRITE, mem1, t.size, GADDR_V(mem1));
/* Let the guest code copy the first array to the second */
vcpu_run(t.kvm_vm, VCPU_ID);
TEST_ASSERT(t.run->exit_reason == KVM_EXIT_S390_SIEIC,
"Unexpected exit reason: %u (%s)\n",
t.run->exit_reason,
exit_reason_str(t.run->exit_reason));
HOST_SYNC(t.vcpu, STAGE_COPIED);
memset(mem2, 0xaa, sizeof(mem2));
@ -256,8 +275,9 @@ static void test_copy(void)
static void guest_idle(void)
{
GUEST_SYNC(STAGE_INITED); /* for consistency's sake */
for (;;)
GUEST_SYNC(0);
GUEST_SYNC(STAGE_IDLED);
}
static void test_errors(void)
@ -265,6 +285,8 @@ static void test_errors(void)
struct test_default t = test_default_init(guest_idle);
int rv;
HOST_SYNC(t.vcpu, STAGE_INITED);
/* Bad size: */
rv = ERR_MOP(t.vcpu, LOGICAL, WRITE, mem1, -1, GADDR_V(mem1));
TEST_ASSERT(rv == -1 && errno == E2BIG, "ioctl allows insane sizes");
@ -294,11 +316,11 @@ static void test_errors(void)
/* Bad access register: */
t.run->psw_mask &= ~(3UL << (63 - 17));
t.run->psw_mask |= 1UL << (63 - 17); /* Enable AR mode */
vcpu_run(t.kvm_vm, VCPU_ID); /* To sync new state to SIE block */
HOST_SYNC(t.vcpu, STAGE_IDLED); /* To sync new state to SIE block */
rv = ERR_MOP(t.vcpu, LOGICAL, WRITE, mem1, t.size, GADDR_V(mem1), AR(17));
TEST_ASSERT(rv == -1 && errno == EINVAL, "ioctl allows ARs > 15");
t.run->psw_mask &= ~(3UL << (63 - 17)); /* Disable AR mode */
vcpu_run(t.kvm_vm, VCPU_ID); /* Run to sync new state */
HOST_SYNC(t.vcpu, STAGE_IDLED); /* Run to sync new state */
/* Check that the SIDA calls are rejected for non-protected guests */
rv = ERR_MOP(t.vcpu, SIDA, READ, mem1, 8, GADDR(0), SIDA_OFFSET(0x1c0));