Re: [PATCH] tests/boot-serial-test: Allow the HPPA machine to shudown

[Thomas Huth]

On 23/01/2020 01.36, Philippe Mathieu-Daudé wrote:
> The boot-serial test uses SeaBIOS on HPPA, and expects to read the
> "SeaBIOS wants SYSTEM HALT" string, see [*]:
> 
>  122 void __VISIBLE __noreturn hlt(void)
>  123 {
>  124     if (pdc_debug)
>  125         printf("HALT initiated from %p\n",  __builtin_return_address(0));
>  126     printf("SeaBIOS wants SYSTEM HALT.\n\n");
>  127     asm volatile("\t.word 0xfffdead0": : :"memory");
>  128     while (1);
>  129 }
> 
> A 'SYSTEM HALT' would really halts the CPU, but SeaBIOS implements
> it as an infinite loop.
> 
> If SeaBIOS does not use the expected serial port but another device,
> we might poll the console indefinitely while the machine is halted.
> 
> Allow the HPPA machine to 'shutdown'. When it does, we'll get
> a qtest error:
> 
>   $ make check-qtest-hppa
>     TEST    check-qtest-hppa: tests/qtest/boot-serial-test
>   ** (tests/qtest/boot-serial-test:31924): ERROR **: 01:12:37.604: Failed to 
> find expected string. Please check '/tmp/qtest-boot-serial-sjxoM6Q'
>   ERROR - Bail out! FATAL-ERROR: Failed to find expected string. Please check 
> '/tmp/qtest-boot-serial-sjxoM6Q'
>   make: *** [tests/Makefile.include:628: check-qtest-hppa] Error 1

The tests are run with -no-shutdown. Why does qemu exit in that case?
Sounds like a bug in another place, and not in the boot-serial-test.

 Thomas