Commit 417bfd0c authored by Sean Christopherson's avatar Sean Christopherson
Browse files

KVM: selftests: Convert the x86 userspace I/O test to printf guest assert 

Convert x86's userspace I/O test to use printf-based guest asserts.

Link: https://lore.kernel.org/r/20230729003643.1053367-30-seanjc@google.com


Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
parent 847ae079

tools/testing/selftests/kvm/x86_64/userspace_io_test.c

+8 −4
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

#define USE_GUEST_ASSERT_PRINTF 1



#include <fcntl.h>

#include <stdio.h>

#include <stdlib.h>
@@ -20,8 +22,8 @@ static void guest_ins_port80(uint8_t *buffer, unsigned int count) 
		end = (unsigned long)buffer + 8192;



	asm volatile("cld; rep; insb" : "+D"(buffer), "+c"(count) : "d"(0x80) : "memory");

	GUEST_ASSERT_1(count == 0, count);

	GUEST_ASSERT_2((unsigned long)buffer == end, buffer, end);

	GUEST_ASSERT_EQ(count, 0);

	GUEST_ASSERT_EQ((unsigned long)buffer, end);

}



static void guest_code(void)
@@ -43,7 +45,9 @@ static void guest_code(void) 
	memset(buffer, 0, sizeof(buffer));

	guest_ins_port80(buffer, 8192);

	for (i = 0; i < 8192; i++)

		GUEST_ASSERT_2(buffer[i] == 0xaa, i, buffer[i]);

		__GUEST_ASSERT(buffer[i] == 0xaa,

			       "Expected '0xaa', got '0x%x' at buffer[%u]",

			       buffer[i], i);



	GUEST_DONE();

}
@@ -91,7 +95,7 @@ int main(int argc, char *argv[]) 
	case UCALL_DONE:

		break;

	case UCALL_ABORT:

		REPORT_GUEST_ASSERT_2(uc, "argN+1 = 0x%lx, argN+2 = 0x%lx");

		REPORT_GUEST_ASSERT(uc);

	default:

		TEST_FAIL("Unknown ucall %lu", uc.cmd);

	}