KVM: selftests: Convert debug-exceptions to printf style GUEST_ASSERT

Convert ARM's debug exceptions  test to use printf-based GUEST_ASSERT().
Opportunistically Use GUEST_ASSERT_EQ() in guest_code_ss() so that the
expected vs. actual values get printed out.

Link: https://lore.kernel.org/r/20230729003643.1053367-12-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

Author: sean-jc

tools/testing/selftests/kvm/aarch64/debug-exceptions.c

@@ -1,4 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
+#define USE_GUEST_ASSERT_PRINTF 1
+
 #include <test_util.h>
 #include <kvm_util.h>
 #include <processor.h>
@@ -365,7 +367,7 @@ static void guest_wp_handler(struct ex_regs *regs)
 
 static void guest_ss_handler(struct ex_regs *regs)
 {
-	GUEST_ASSERT_1(ss_idx < 4, ss_idx);
+	__GUEST_ASSERT(ss_idx < 4, "Expected index < 4, got '%u'", ss_idx);
 	ss_addr[ss_idx++] = regs->pc;
 	regs->pstate |= SPSR_SS;
 }
@@ -410,8 +412,8 @@ static void guest_code_ss(int test_cnt)
 		/* Userspace disables Single Step when the end is nigh. */
 		asm volatile("iter_ss_end:\n");
 
-		GUEST_ASSERT(bvr == w_bvr);
-		GUEST_ASSERT(wvr == w_wvr);
+		GUEST_ASSERT_EQ(bvr, w_bvr);
+		GUEST_ASSERT_EQ(wvr, w_wvr);
 	}
 	GUEST_DONE();
 }
@@ -450,7 +452,7 @@ static void test_guest_debug_exceptions(uint8_t bpn, uint8_t wpn, uint8_t ctx_bp
 	vcpu_run(vcpu);
 	switch (get_ucall(vcpu, &uc)) {
 	case UCALL_ABORT:
-		REPORT_GUEST_ASSERT_2(uc, "values: %#lx, %#lx");
+		REPORT_GUEST_ASSERT(uc);
 		break;
 	case UCALL_DONE:
 		goto done;