diff options
author | Christian Borntraeger <borntraeger@de.ibm.com> | 2020-03-10 09:01:42 -0400 |
---|---|---|
committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-03-16 17:59:09 +0100 |
commit | 3203a01737af5c929854940cc72425bef553d403 (patch) | |
tree | d4e796569d3ebca4adbd4bef7a8da99becab1919 /tools | |
parent | b0435a12a6d3839dd8190982d11aee825bca4250 (diff) |
selftests: KVM: s390: check for registers to NOT change on reset
Normal reset and initial CPU reset do not clear all registers. Add a
test that those registers are NOT changed.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r-- | tools/testing/selftests/kvm/s390x/resets.c | 55 |
1 files changed, 53 insertions, 2 deletions
diff --git a/tools/testing/selftests/kvm/s390x/resets.c b/tools/testing/selftests/kvm/s390x/resets.c index 5c53d5d439ed..b143db6d8693 100644 --- a/tools/testing/selftests/kvm/s390x/resets.c +++ b/tools/testing/selftests/kvm/s390x/resets.c @@ -40,8 +40,22 @@ static void guest_code_initial(void) " lctlg 8,8,%1\n" " lctlg 10,10,%2\n" " lctlg 11,11,%3\n" - : : "m" (cr2_59), "m" (cr8_63), "m" (cr10), "m" (cr11) : "2"); - GUEST_SYNC(0); + /* now clobber some general purpose regs */ + " llihh 0,0xffff\n" + " llihl 1,0x5555\n" + " llilh 2,0xaaaa\n" + " llill 3,0x0000\n" + /* now clobber a floating point reg */ + " lghi 4,0x1\n" + " cdgbr 0,4\n" + /* now clobber an access reg */ + " sar 9,4\n" + /* We embed diag 501 here to control register content */ + " diag 0,0,0x501\n" + : + : "m" (cr2_59), "m" (cr8_63), "m" (cr10), "m" (cr11) + /* no clobber list as this should not return */ + ); } static void test_one_reg(uint64_t id, uint64_t value) @@ -98,6 +112,21 @@ static void assert_clear(void) "vrs0-15 == 0 (sync_regs)"); } +static void assert_initial_noclear(void) +{ + TEST_ASSERT(sync_regs->gprs[0] == 0xffff000000000000UL, + "gpr0 == 0xffff000000000000 (sync_regs)"); + TEST_ASSERT(sync_regs->gprs[1] == 0x0000555500000000UL, + "gpr1 == 0x0000555500000000 (sync_regs)"); + TEST_ASSERT(sync_regs->gprs[2] == 0x00000000aaaa0000UL, + "gpr2 == 0x00000000aaaa0000 (sync_regs)"); + TEST_ASSERT(sync_regs->gprs[3] == 0x0000000000000000UL, + "gpr3 == 0x0000000000000000 (sync_regs)"); + TEST_ASSERT(sync_regs->fprs[0] == 0x3ff0000000000000UL, + "fpr0 == 0f1 (sync_regs)"); + TEST_ASSERT(sync_regs->acrs[9] == 1, "ar9 == 1 (sync_regs)"); +} + static void assert_initial(void) { struct kvm_sregs sregs; @@ -140,6 +169,14 @@ static void assert_initial(void) test_one_reg(KVM_REG_S390_CLOCK_COMP, 0); } +static void assert_normal_noclear(void) +{ + TEST_ASSERT(sync_regs->crs[2] == 0x10, "cr2 == 10 (sync_regs)"); + TEST_ASSERT(sync_regs->crs[8] == 1, "cr10 == 1 (sync_regs)"); + TEST_ASSERT(sync_regs->crs[10] == 1, "cr10 == 1 (sync_regs)"); + TEST_ASSERT(sync_regs->crs[11] == -1, "cr11 == -1 (sync_regs)"); +} + static void assert_normal(void) { test_one_reg(KVM_REG_S390_PFTOKEN, KVM_S390_PFAULT_TOKEN_INVALID); @@ -176,7 +213,13 @@ static void test_normal(void) inject_irq(VCPU_ID); vcpu_ioctl(vm, VCPU_ID, KVM_S390_NORMAL_RESET, 0); + + /* must clears */ assert_normal(); + /* must not clears */ + assert_normal_noclear(); + assert_initial_noclear(); + kvm_vm_free(vm); } @@ -192,8 +235,13 @@ static void test_initial(void) inject_irq(VCPU_ID); vcpu_ioctl(vm, VCPU_ID, KVM_S390_INITIAL_RESET, 0); + + /* must clears */ assert_normal(); assert_initial(); + /* must not clears */ + assert_initial_noclear(); + kvm_vm_free(vm); } @@ -209,9 +257,12 @@ static void test_clear(void) inject_irq(VCPU_ID); vcpu_ioctl(vm, VCPU_ID, KVM_S390_CLEAR_RESET, 0); + + /* must clears */ assert_normal(); assert_initial(); assert_clear(); + kvm_vm_free(vm); } |