Re: [PATCH v14 10/11] qapi/s390/cpu topology: POLARITY_CHANGE qapi event

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On 18/01/2023 18.09, Pierre Morel wrote:

On 1/12/23 12:52, Thomas Huth wrote:
On 05/01/2023 15.53, Pierre Morel wrote:
...>>> +#
+# Emitted when the guest asks to change the polarity.
+#
+# @polarity: polarity specified by the guest

Please elaborate: Where does the value come from (the PTF instruction)? Which values are possible?

Yes what about:

# @polarity: the guest can specify with the PTF instruction a horizontal
#            or a vertical polarity.

Maybe something like: "The guest can tell the host (via the PTF instruction) whether a CPU should have horizontal or vertical polarity." ?

#         On horizontal polarity the host is expected to provision
#            the vCPU equally.

Maybe: "all vCPUs equally" ?
Or: "each vCPU equally" ?

#            On vertical polarity the host can provision each vCPU
#            differently
#            The guest can get information on the provisioning with
#            the STSI(15) instruction.

 Thomas




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