On 04.12.19 15:59, Cornelia Huck wrote:
> On Tue, 3 Dec 2019 08:28:11 -0500
> Janosch Frank <fran...@linux.ibm.com> wrote:
>
>> Up to now we only had an ioctl to reset vcpu data QEMU couldn't reach
>> for the initial reset, and that was also called for the clear
>> reset. To be architecture compliant, we also need to clear local
>> interrupts on a normal reset.
>
> Do we also need to do something like that for tcg? David?
>
So, we have
/* Fields up to this point are not cleared by initial CPU reset */
struct {} start_initial_reset_fields;
[...]
int pending_int
uint16_t external_call_addr;
DECLARE_BITMAP(emergency_signals, S390_MAX_CPUS);
[...]
/* Fields up to this point are cleared by a CPU reset */
struct {} end_reset_fields;
This means, local interrupts will be cleared by everything that zeroes
"start_initial_reset_fields->end_reset_fields"
So, they will get cleared by S390_CPU_RESET_INITIAL only if I am not
wrong. In order to clear them on S390_CPU_RESET_NORMAL, we have to
manually set them to zero.
(we really should wrap TCG-only fields by ifdefs)
--
Thanks,
David / dhildenb
