Re: [PATCH v9 4/4] KVM: PPC: epapr: Update other hypercall invoking

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On 03/07/2012 05:37 PM, Alexander Graf wrote:
> 
> On 08.03.2012, at 00:12, Stuart Yoder wrote:
> 
>> diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
>> index f1ea59b..9ac4bc6 100644
>> --- a/drivers/tty/Kconfig
>> +++ b/drivers/tty/Kconfig
>> @@ -354,6 +354,7 @@ config TRACE_SINK
>> config PPC_EPAPR_HV_BYTECHAN
>> 	tristate "ePAPR hypervisor byte channel driver"
>> 	depends on PPC
>> +	select EPAPR_PARAVIRT
>> 	help
>> 	  This driver creates /dev entries for each ePAPR hypervisor byte
>> 	  channel, thereby allowing applications to communicate with byte
>> diff --git a/drivers/virt/Kconfig b/drivers/virt/Kconfig
>> index 2dcdbc9..99ebdde 100644
>> --- a/drivers/virt/Kconfig
>> +++ b/drivers/virt/Kconfig
>> @@ -15,6 +15,7 @@ if VIRT_DRIVERS
>> config FSL_HV_MANAGER
>> 	tristate "Freescale hypervisor management driver"
>> 	depends on FSL_SOC
>> +	select EPAPR_PARAVIRT
> 
> Do you maybe have older versions of topaz that don't expose a /hypervisor node for which you want to have fallback code in?

Probably not that lack a /hypervisor altogether, but it's possible
someone's using a Topaz that's too old to have hcall-instructions, which
was added about a year and a half ago.

-Scott

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