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KVM: selftests: Open code vcpu_run() equivalent in guest_printf test

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Open code a version of vcpu_run() in the guest_printf test in anticipation
of adding UCALL_ABORT handling to _vcpu_run().  The guest_printf test
intentionally generates asserts to verify the output, and thus needs to
bypass common assert handling.

Open code a helper in the guest_printf test, as it's not expected that any
other test would want to skip _only_ the UCALL_ABORT handling.

Link: https://lore.kernel.org/r/20240719235107.3023592-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Sean Christopherson
2024-07-19 16:51:01 -07:00
parent 73b42dc69b
commit d1c2cdca5a
1 changed files with 17 additions and 2 deletions
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tools/testing/selftests/kvm/guest_print_test.c
+17 -2
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@@ -107,6 +107,21 @@ static void ucall_abort(const char *assert_msg, const char *expected_assert_msg)
expected_assert_msg, &assert_msg[offset]);
}
/*
* Open code vcpu_run(), sans the UCALL_ABORT handling, so that intentional
* guest asserts guest can be verified instead of being reported as failures.
*/
static void do_vcpu_run(struct kvm_vcpu *vcpu)
{
int r;
do {
r = __vcpu_run(vcpu);
} while (r == -1 && errno == EINTR);
TEST_ASSERT(!r, KVM_IOCTL_ERROR(KVM_RUN, r));
}
static void run_test(struct kvm_vcpu *vcpu, const char *expected_printf,
const char *expected_assert)
{
@@ -114,7 +129,7 @@ static void run_test(struct kvm_vcpu *vcpu, const char *expected_printf,
struct ucall uc;
while (1) {
vcpu_run(vcpu);
do_vcpu_run(vcpu);
TEST_ASSERT(run->exit_reason == UCALL_EXIT_REASON,
"Unexpected exit reason: %u (%s),",
@@ -159,7 +174,7 @@ static void test_limits(void)
vm = vm_create_with_one_vcpu(&vcpu, guest_code_limits);
run = vcpu->run;
vcpu_run(vcpu);
do_vcpu_run(vcpu);
TEST_ASSERT(run->exit_reason == UCALL_EXIT_REASON,
"Unexpected exit reason: %u (%s),",