Re: [PATCH v4 0/6] ppc: reset the interrupt presenter from the CPU reset handler

[Cédric Le Goater]

On 22/10/2019 15:42, Cédric Le Goater wrote:
> Hello,
> 
> On the sPAPR machine and PowerNV machine, the interrupt presenters are
> created by a machine handler at the core level and are reseted
> independently. This is not consistent and it raises issues when it
> comes to handle hot-plugged CPUs. In that case, the presenters are not
> reseted. This is less of an issue in XICS, although a zero MFFR could
> be a concern, but in XIVE, the OS CAM line is not set and this breaks
> the presenting algorithm. The current code has workarounds which need
> a global cleanup.
> 
> Extend the sPAPR IRQ backend and the PowerNV Chip class with a new
> cpu_intc_reset() handler called by the CPU reset handler and remove
> the XiveTCTX reset handler which is now redundant.
> 
> Set the OS CAM line when the interrupt presenter of the sPAPR core is
> reseted. This will also cover the case of hot-plugged CPUs.

This series is missing one patch. It needs a resend.

C.