From: Jan Beulich <jbeulich@suse.com>
To: "Roger Pau Monné" <roger.pau@citrix.com>
Cc: "xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
Andrew Cooper <andrew.cooper3@citrix.com>
Subject: Re: [PATCH 7/9] x86/mwait-idle: drop const from struct cpuidle_state arrays
Date: Mon, 4 May 2026 11:14:25 +0200 [thread overview]
Message-ID: <98c6c506-59eb-4b5d-bfae-6d92d9bb777d@suse.com> (raw)
In-Reply-To: <aeuvI_ojCxA9BR36@macbook.local>
On 24.04.2026 19:57, Roger Pau Monné wrote:
> On Thu, Mar 12, 2026 at 05:57:18PM +0100, Jan Beulich wrote:
>> A subsequent change will want to be able to alter them based on a new
>> command line option. (Note that some were __ro_after_init already.)
>>
>> Signed-off-by: Jan Beulich <jbeulich@suse.com>
>
> I wonder if we could also move all the cstate tables to .init section,
> as after boot we would only use one of those.
I think we could, at the price of introducing a compile-time upper bound
to the size of those arrays. We'd need to copy the one we want to use at
runtime, and hence we'd need to reserve enough space (or use a runtime
allocation).
> Anyway, for the change
> here:
>
> Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Thanks.
Jan
next prev parent reply other threads:[~2026-05-04 9:14 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-12 16:53 [PATCH 0/9] x86/mwait-idle: sync up with Linux 7.0-rc Jan Beulich
2026-03-12 16:54 ` [PATCH 1/9] x86/mwait-idle: arrange for BSP MSR adjustments during S3 resume Jan Beulich
2026-04-24 14:34 ` Roger Pau Monné
2026-05-04 9:02 ` Jan Beulich
2026-03-12 16:54 ` [PATCH 2/9] x86/mwait-idle: clean up BYT/CHT auto demotion disable Jan Beulich
2026-04-24 14:47 ` Roger Pau Monné
2026-05-04 9:07 ` Jan Beulich
2026-03-12 16:55 ` [PATCH 3/9] x86/mwait-idle: latch struct idle_cpu contents Jan Beulich
2026-04-24 15:24 ` Roger Pau Monné
2026-03-12 16:55 ` [PATCH 4/9] x86/mwait-idle: move pre-initialized struct idle_cpu instances Jan Beulich
2026-04-24 15:33 ` Roger Pau Monné
2026-03-12 16:56 ` [PATCH 5/9] x86/mwait-idle: Remove unused driver version constant Jan Beulich
2026-04-24 15:35 ` Roger Pau Monné
2026-03-12 16:56 ` [PATCH 6/9] x86/mwait-idle: Remove the 'preferred_cstates' parameter Jan Beulich
2026-04-24 15:37 ` Roger Pau Monné
2026-03-12 16:57 ` [PATCH 7/9] x86/mwait-idle: drop const from struct cpuidle_state arrays Jan Beulich
2026-04-24 17:57 ` Roger Pau Monné
2026-05-04 9:14 ` Jan Beulich [this message]
2026-03-12 16:57 ` [PATCH 8/9] x86/mwait-idle: Add cmdline option to adjust C-states table Jan Beulich
2026-04-24 19:10 ` Roger Pau Monné
2026-05-04 9:29 ` Jan Beulich
2026-03-12 16:58 ` [PATCH 9/9] x86/mwait-idle: Add C-states validation Jan Beulich
2026-04-24 19:15 ` Roger Pau Monné
2026-05-04 9:34 ` Jan Beulich
2026-05-08 7:38 ` Roger Pau Monné
2026-05-11 10:41 ` Jan Beulich
2026-05-12 15:22 ` [PATCH 0/9] x86/mwait-idle: sync up with Linux 7.0-rc Oleksii Kurochko
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