From: David Woodhouse Date: Sat, 4 Feb 2023 02:41:50 +0000 (+0000) Subject: KVM: selftests: Use enum for test numbers in xen_shinfo_test X-Git-Tag: v6.6.7~2927^2~35 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e7062a98d0b3e0b42089f4c5da633a1ce41b807f;p=platform%2Fkernel%2Flinux-starfive.git KVM: selftests: Use enum for test numbers in xen_shinfo_test The xen_shinfo_test started off with very few iterations, and the numbers we used in GUEST_SYNC() were precisely mapped to the RUNSTATE_xxx values anyway to start with. It has since grown quite a few more tests, and it's kind of awful to be handling them all as bare numbers. Especially when I want to add a new test in the middle. Define an enum for the test stages, and use it both in the guest code and the host switch statement. No functional change, if I can count to 24. Signed-off-by: David Woodhouse Signed-off-by: Sean Christopherson Message-Id: <20230204024151.1373296-4-seanjc@google.com> Signed-off-by: Paolo Bonzini --- diff --git a/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c b/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c index 827b8e1..1a3d2d5 100644 --- a/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c +++ b/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c @@ -41,6 +41,36 @@ #define EVTCHN_TEST2 66 #define EVTCHN_TIMER 13 +enum { + TEST_INJECT_VECTOR = 0, + TEST_RUNSTATE_runnable, + TEST_RUNSTATE_blocked, + TEST_RUNSTATE_offline, + TEST_RUNSTATE_ADJUST, + TEST_RUNSTATE_DATA, + TEST_STEAL_TIME, + TEST_EVTCHN_MASKED, + TEST_EVTCHN_UNMASKED, + TEST_EVTCHN_SLOWPATH, + TEST_EVTCHN_SEND_IOCTL, + TEST_EVTCHN_HCALL, + TEST_EVTCHN_HCALL_EVENTFD, + TEST_TIMER_SETUP, + TEST_TIMER_WAIT, + TEST_TIMER_RESTORE, + TEST_POLL_READY, + TEST_POLL_TIMEOUT, + TEST_POLL_MASKED, + TEST_POLL_WAKE, + TEST_TIMER_PAST, + TEST_LOCKING_SEND_RACE, + TEST_LOCKING_POLL_RACE, + TEST_LOCKING_POLL_TIMEOUT, + TEST_DONE, + + TEST_GUEST_SAW_IRQ, +}; + #define XEN_HYPERCALL_MSR 0x40000000 #define MIN_STEAL_TIME 50000 @@ -144,7 +174,7 @@ static void evtchn_handler(struct ex_regs *regs) vi->evtchn_pending_sel = 0; guest_saw_irq = true; - GUEST_SYNC(0x20); + GUEST_SYNC(TEST_GUEST_SAW_IRQ); } static void guest_wait_for_irq(void) @@ -165,41 +195,41 @@ static void guest_code(void) ); /* Trigger an interrupt injection */ - GUEST_SYNC(0); + GUEST_SYNC(TEST_INJECT_VECTOR); guest_wait_for_irq(); /* Test having the host set runstates manually */ - GUEST_SYNC(RUNSTATE_runnable); + GUEST_SYNC(TEST_RUNSTATE_runnable); GUEST_ASSERT(rs->time[RUNSTATE_runnable] != 0); GUEST_ASSERT(rs->state == 0); - GUEST_SYNC(RUNSTATE_blocked); + GUEST_SYNC(TEST_RUNSTATE_blocked); GUEST_ASSERT(rs->time[RUNSTATE_blocked] != 0); GUEST_ASSERT(rs->state == 0); - GUEST_SYNC(RUNSTATE_offline); + GUEST_SYNC(TEST_RUNSTATE_offline); GUEST_ASSERT(rs->time[RUNSTATE_offline] != 0); GUEST_ASSERT(rs->state == 0); /* Test runstate time adjust */ - GUEST_SYNC(4); + GUEST_SYNC(TEST_RUNSTATE_ADJUST); GUEST_ASSERT(rs->time[RUNSTATE_blocked] == 0x5a); GUEST_ASSERT(rs->time[RUNSTATE_offline] == 0x6b6b); /* Test runstate time set */ - GUEST_SYNC(5); + GUEST_SYNC(TEST_RUNSTATE_DATA); GUEST_ASSERT(rs->state_entry_time >= 0x8000); GUEST_ASSERT(rs->time[RUNSTATE_runnable] == 0); GUEST_ASSERT(rs->time[RUNSTATE_blocked] == 0x6b6b); GUEST_ASSERT(rs->time[RUNSTATE_offline] == 0x5a); /* sched_yield() should result in some 'runnable' time */ - GUEST_SYNC(6); + GUEST_SYNC(TEST_STEAL_TIME); GUEST_ASSERT(rs->time[RUNSTATE_runnable] >= MIN_STEAL_TIME); /* Attempt to deliver a *masked* interrupt */ - GUEST_SYNC(7); + GUEST_SYNC(TEST_EVTCHN_MASKED); /* Wait until we see the bit set */ struct shared_info *si = (void *)SHINFO_VADDR; @@ -207,21 +237,21 @@ static void guest_code(void) __asm__ __volatile__ ("rep nop" : : : "memory"); /* Now deliver an *unmasked* interrupt */ - GUEST_SYNC(8); + GUEST_SYNC(TEST_EVTCHN_UNMASKED); guest_wait_for_irq(); /* Change memslots and deliver an interrupt */ - GUEST_SYNC(9); + GUEST_SYNC(TEST_EVTCHN_SLOWPATH); guest_wait_for_irq(); /* Deliver event channel with KVM_XEN_HVM_EVTCHN_SEND */ - GUEST_SYNC(10); + GUEST_SYNC(TEST_EVTCHN_SEND_IOCTL); guest_wait_for_irq(); - GUEST_SYNC(11); + GUEST_SYNC(TEST_EVTCHN_HCALL); /* Our turn. Deliver event channel (to ourselves) with * EVTCHNOP_send hypercall. */ @@ -230,7 +260,7 @@ static void guest_code(void) guest_wait_for_irq(); - GUEST_SYNC(12); + GUEST_SYNC(TEST_EVTCHN_HCALL_EVENTFD); /* Deliver "outbound" event channel to an eventfd which * happens to be one of our own irqfds. */ @@ -239,23 +269,23 @@ static void guest_code(void) guest_wait_for_irq(); - GUEST_SYNC(13); + GUEST_SYNC(TEST_TIMER_SETUP); /* Set a timer 100ms in the future. */ xen_hypercall(__HYPERVISOR_set_timer_op, rs->state_entry_time + 100000000, NULL); - GUEST_SYNC(14); + GUEST_SYNC(TEST_TIMER_WAIT); /* Now wait for the timer */ guest_wait_for_irq(); - GUEST_SYNC(15); + GUEST_SYNC(TEST_TIMER_RESTORE); /* The host has 'restored' the timer. Just wait for it. */ guest_wait_for_irq(); - GUEST_SYNC(16); + GUEST_SYNC(TEST_POLL_READY); /* Poll for an event channel port which is already set */ u32 ports[1] = { EVTCHN_TIMER }; @@ -267,19 +297,19 @@ static void guest_code(void) xen_hypercall(__HYPERVISOR_sched_op, SCHEDOP_poll, &p); - GUEST_SYNC(17); + GUEST_SYNC(TEST_POLL_TIMEOUT); /* Poll for an unset port and wait for the timeout. */ p.timeout = 100000000; xen_hypercall(__HYPERVISOR_sched_op, SCHEDOP_poll, &p); - GUEST_SYNC(18); + GUEST_SYNC(TEST_POLL_MASKED); /* A timer will wake the masked port we're waiting on, while we poll */ p.timeout = 0; xen_hypercall(__HYPERVISOR_sched_op, SCHEDOP_poll, &p); - GUEST_SYNC(19); + GUEST_SYNC(TEST_POLL_WAKE); /* A timer wake an *unmasked* port which should wake us with an * actual interrupt, while we're polling on a different port. */ @@ -289,17 +319,17 @@ static void guest_code(void) guest_wait_for_irq(); - GUEST_SYNC(20); + GUEST_SYNC(TEST_TIMER_PAST); /* Timer should have fired already */ guest_wait_for_irq(); - GUEST_SYNC(21); + GUEST_SYNC(TEST_LOCKING_SEND_RACE); /* Racing host ioctls */ guest_wait_for_irq(); - GUEST_SYNC(22); + GUEST_SYNC(TEST_LOCKING_POLL_RACE); /* Racing vmcall against host ioctl */ ports[0] = 0; @@ -327,12 +357,12 @@ wait_for_timer: * expiring while the event channel was invalid. */ if (!guest_saw_irq) { - GUEST_SYNC(23); + GUEST_SYNC(TEST_LOCKING_POLL_TIMEOUT); goto wait_for_timer; } guest_saw_irq = false; - GUEST_SYNC(24); + GUEST_SYNC(TEST_DONE); } static int cmp_timespec(struct timespec *a, struct timespec *b) @@ -602,25 +632,26 @@ int main(int argc, char *argv[]) "runstate times don't add up"); switch (uc.args[1]) { - case 0: + case TEST_INJECT_VECTOR: if (verbose) printf("Delivering evtchn upcall\n"); evtchn_irq_expected = true; vinfo->evtchn_upcall_pending = 1; break; - case RUNSTATE_runnable...RUNSTATE_offline: + case TEST_RUNSTATE_runnable...TEST_RUNSTATE_offline: TEST_ASSERT(!evtchn_irq_expected, "Event channel IRQ not seen"); if (!do_runstate_tests) goto done; if (verbose) printf("Testing runstate %s\n", runstate_names[uc.args[1]]); rst.type = KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_CURRENT; - rst.u.runstate.state = uc.args[1]; + rst.u.runstate.state = uc.args[1] + RUNSTATE_runnable - + TEST_RUNSTATE_runnable; vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &rst); break; - case 4: + case TEST_RUNSTATE_ADJUST: if (verbose) printf("Testing RUNSTATE_ADJUST\n"); rst.type = KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_ADJUST; @@ -635,7 +666,7 @@ int main(int argc, char *argv[]) vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &rst); break; - case 5: + case TEST_RUNSTATE_DATA: if (verbose) printf("Testing RUNSTATE_DATA\n"); rst.type = KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_DATA; @@ -647,7 +678,7 @@ int main(int argc, char *argv[]) vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &rst); break; - case 6: + case TEST_STEAL_TIME: if (verbose) printf("Testing steal time\n"); /* Yield until scheduler delay exceeds target */ @@ -657,7 +688,7 @@ int main(int argc, char *argv[]) } while (get_run_delay() < rundelay); break; - case 7: + case TEST_EVTCHN_MASKED: if (!do_eventfd_tests) goto done; if (verbose) @@ -667,7 +698,7 @@ int main(int argc, char *argv[]) alarm(1); break; - case 8: + case TEST_EVTCHN_UNMASKED: if (verbose) printf("Testing unmasked event channel\n"); /* Unmask that, but deliver the other one */ @@ -678,7 +709,7 @@ int main(int argc, char *argv[]) alarm(1); break; - case 9: + case TEST_EVTCHN_SLOWPATH: TEST_ASSERT(!evtchn_irq_expected, "Expected event channel IRQ but it didn't happen"); shinfo->evtchn_pending[1] = 0; @@ -691,7 +722,7 @@ int main(int argc, char *argv[]) alarm(1); break; - case 10: + case TEST_EVTCHN_SEND_IOCTL: TEST_ASSERT(!evtchn_irq_expected, "Expected event channel IRQ but it didn't happen"); if (!do_evtchn_tests) @@ -711,7 +742,7 @@ int main(int argc, char *argv[]) alarm(1); break; - case 11: + case TEST_EVTCHN_HCALL: TEST_ASSERT(!evtchn_irq_expected, "Expected event channel IRQ but it didn't happen"); shinfo->evtchn_pending[1] = 0; @@ -722,7 +753,7 @@ int main(int argc, char *argv[]) alarm(1); break; - case 12: + case TEST_EVTCHN_HCALL_EVENTFD: TEST_ASSERT(!evtchn_irq_expected, "Expected event channel IRQ but it didn't happen"); shinfo->evtchn_pending[0] = 0; @@ -733,7 +764,7 @@ int main(int argc, char *argv[]) alarm(1); break; - case 13: + case TEST_TIMER_SETUP: TEST_ASSERT(!evtchn_irq_expected, "Expected event channel IRQ but it didn't happen"); shinfo->evtchn_pending[1] = 0; @@ -742,7 +773,7 @@ int main(int argc, char *argv[]) printf("Testing guest oneshot timer\n"); break; - case 14: + case TEST_TIMER_WAIT: memset(&tmr, 0, sizeof(tmr)); tmr.type = KVM_XEN_VCPU_ATTR_TYPE_TIMER; vcpu_ioctl(vcpu, KVM_XEN_VCPU_GET_ATTR, &tmr); @@ -756,7 +787,7 @@ int main(int argc, char *argv[]) alarm(1); break; - case 15: + case TEST_TIMER_RESTORE: TEST_ASSERT(!evtchn_irq_expected, "Expected event channel IRQ but it didn't happen"); shinfo->evtchn_pending[0] = 0; @@ -770,7 +801,7 @@ int main(int argc, char *argv[]) alarm(1); break; - case 16: + case TEST_POLL_READY: TEST_ASSERT(!evtchn_irq_expected, "Expected event channel IRQ but it didn't happen"); @@ -780,14 +811,14 @@ int main(int argc, char *argv[]) alarm(1); break; - case 17: + case TEST_POLL_TIMEOUT: if (verbose) printf("Testing SCHEDOP_poll timeout\n"); shinfo->evtchn_pending[0] = 0; alarm(1); break; - case 18: + case TEST_POLL_MASKED: if (verbose) printf("Testing SCHEDOP_poll wake on masked event\n"); @@ -796,7 +827,7 @@ int main(int argc, char *argv[]) alarm(1); break; - case 19: + case TEST_POLL_WAKE: shinfo->evtchn_pending[0] = shinfo->evtchn_mask[0] = 0; if (verbose) printf("Testing SCHEDOP_poll wake on unmasked event\n"); @@ -813,7 +844,7 @@ int main(int argc, char *argv[]) alarm(1); break; - case 20: + case TEST_TIMER_PAST: TEST_ASSERT(!evtchn_irq_expected, "Expected event channel IRQ but it didn't happen"); /* Read timer and check it is no longer pending */ @@ -830,7 +861,7 @@ int main(int argc, char *argv[]) alarm(1); break; - case 21: + case TEST_LOCKING_SEND_RACE: TEST_ASSERT(!evtchn_irq_expected, "Expected event channel IRQ but it didn't happen"); alarm(0); @@ -852,7 +883,7 @@ int main(int argc, char *argv[]) __vm_ioctl(vm, KVM_XEN_HVM_EVTCHN_SEND, &uxe); break; - case 22: + case TEST_LOCKING_POLL_RACE: TEST_ASSERT(!evtchn_irq_expected, "Expected event channel IRQ but it didn't happen"); @@ -867,7 +898,7 @@ int main(int argc, char *argv[]) vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &tmr); break; - case 23: + case TEST_LOCKING_POLL_TIMEOUT: /* * Optional and possibly repeated sync point. * Injecting the timer IRQ may fail if the @@ -889,7 +920,7 @@ int main(int argc, char *argv[]) SHINFO_RACE_TIMEOUT * 1000000000ULL; vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &tmr); break; - case 24: + case TEST_DONE: TEST_ASSERT(!evtchn_irq_expected, "Expected event channel IRQ but it didn't happen"); @@ -900,7 +931,7 @@ int main(int argc, char *argv[]) TEST_ASSERT(ret == 0, "pthread_join() failed: %s", strerror(ret)); goto done; - case 0x20: + case TEST_GUEST_SAW_IRQ: TEST_ASSERT(evtchn_irq_expected, "Unexpected event channel IRQ"); evtchn_irq_expected = false; break;