Re: [kvm-unit-tests PATCH v2 2/2] s390x: pgm interrupt handler and a way to test them

[Paolo Bonzini <pbonzini@xxxxxxxxxx>]

On 31/05/2017 14:39, David Hildenbrand wrote:
> +	expect_pgm_int();
> +	*((unsigned int*)-1) = 1;
> +	check_pgm_int_code(PGM_INT_CODE_ADDRESSING);

QEMU gets

ABORT: selftest: Unexpected program interrupt: 5 at 0x12b4c, ilen 4

It seems that QEMU doesn't point the PSW at the next instruction:

	IN: main
	0x0000000000012b44:  lghi       %r1,-1
	0x0000000000012b48:  lhi        %r3,1
	0x0000000000012b4c:  st %r3,0(%r1)
	0x0000000000012b50:  lghi       %r2,5
	0x0000000000012b54:  brasl      %r14,0x128e8
	0x0000000000012b4c:  st %r3,0(%r1)
	0x0000000000012b50:  lghi       %r2,5
	0x0000000000012b54:  brasl      %r14,0x128e8     # this is expect_pgm_int

	Trace 0x7f5ff6c7f520 [0: 0000000000012b44] main
	Trace 0x7f5ff6c7bc20 [0: 000000000001004e] 
	Trace 0x7f5ff6c7c960 [0: 0000000000012918] handle_pgm_int
	Trace 0x7f5ff6c7d280 [0: 00000000000100a4] 

and now it gets another program interrupt:

	IN: main
	0x0000000000012b4c:  st %r3,0(%r1)
	0x0000000000012b50:  lghi       %r2,5
	0x0000000000012b54:  brasl      %r14,0x128e8

	Trace 0x7f5ff6c7f600 [0: 0000000000012b4c] main
	Trace 0x7f5ff6c7bc20 [0: 000000000001004e] 
	Trace 0x7f5ff6c7c960 [0: 0000000000012918] handle_pgm_int

Thanks,

Paolo