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Re: [PATCH v17 1/4] xen/arm: Implement PSCI SYSTEM_SUSPEND call for guests
- To: Mykola Kvach <xakep.amatop@xxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 24 Mar 2026 16:24:13 +0100
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- Cc: Mykola Kvach <mykola_kvach@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 24 Mar 2026 15:24:18 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 24.03.2026 15:59, Mykola Kvach wrote:
> On Tue, Mar 24, 2026 at 2:53 PM Jan Beulich <jbeulich@xxxxxxxx> wrote:
>>
>> On 24.03.2026 13:26, Mykola Kvach wrote:
>>> --- /dev/null
>>> +++ b/xen/include/xen/suspend.h
>>> @@ -0,0 +1,25 @@
>>> +/* SPDX-License-Identifier: GPL-2.0-only */
>>> +
>>> +#ifndef XEN_SUSPEND_H
>>> +#define XEN_SUSPEND_H
>>> +
>>> +#if __has_include(<asm/suspend.h>)
>>> +#include <asm/suspend.h>
>>> +#else
>>> +static inline void arch_domain_resume(struct domain *d)
>>> +{
>>> + (void)d;
>>
>> What use is this? None of our stubs does anything like that without a clear
>> need.
>
> The (void)d was only meant to make it explicit that the parameter is
> intentionally unused in this no-op stub.
>
> I find this useful as a reminder both for possible compiler
> unused-parameter checks and from a MISRA-style point of view, although it
> has no functional effect. Given how late this is in the series, I would
> prefer to avoid another reroll for this detail alone.
>
> Happy to send v18 if you think this is a blocker, but I'm also fine if you
> want to strip that line on commit to save us both some time.
Stripping while committing is fine with me, but it's unlikely going to be
me to end up as the committer of this series.
Jan
|
