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Re: [Xen-devel] [PATCH v2 09/11] x86/paravirt: move the Xen-only pv_irq_ops under the PARAVIRT_XXL umbrella
- To: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
- From: Juergen Gross <jgross@xxxxxxxx>
- Date: Fri, 24 Aug 2018 16:13:43 +0200
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- Cc: rusty@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx, mingo@xxxxxxxxxx, tglx@xxxxxxxxxxxxx, hpa@xxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, akataria@xxxxxxxxxx, boris.ostrovsky@xxxxxxxxxx
- Delivery-date: Fri, 24 Aug 2018 14:13:52 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Openpgp: preference=signencrypt
On 24/08/18 16:10, Peter Zijlstra wrote:
> On Mon, Aug 13, 2018 at 09:37:37AM +0200, Juergen Gross wrote:
>> Some of the paravirt ops defined in pv_irq_ops are for Xen PV guests
>> only. Define them only if CONFIG_PARAVIRT_XXL is set.
>> diff --git a/arch/x86/include/asm/paravirt_types.h
>> b/arch/x86/include/asm/paravirt_types.h
>> index e652ec27d945..ae53ee36d8fb 100644
>> --- a/arch/x86/include/asm/paravirt_types.h
>> +++ b/arch/x86/include/asm/paravirt_types.h
>> @@ -197,8 +197,10 @@ struct pv_irq_ops {
>> struct paravirt_callee_save irq_disable;
>> struct paravirt_callee_save irq_enable;
>>
>> +#ifdef CONFIG_PARAVIRT_XXL
>> void (*safe_halt)(void);
>> void (*halt)(void);
>> +#endif
>
> that makes me sad... but it appears VSMP also uses them. Can't you
> simply make VSMP also select XXL, I don't think that's used quite as
> much as Xen is :-)
>
Sure, why not?
Any objections?
Juergen
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