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From: David Woodhouse <dwmw2@infradead.org>
To: Oleksandr Natalenko <oleksandr@natalenko.name>
Cc: Kim Phillips <kim.phillips@amd.com>,
	tglx@linutronix.de, Usama Arif <usama.arif@bytedance.com>,
	arjan@linux.intel.com, mingo@redhat.com, bp@alien8.de,
	dave.hansen@linux.intel.com, hpa@zytor.com, x86@kernel.org,
	pbonzini@redhat.com, paulmck@kernel.org,
	linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
	rcu@vger.kernel.org, mimoja@mimoja.de, hewenliang4@huawei.com,
	thomas.lendacky@amd.com, seanjc@google.com,
	pmenzel@molgen.mpg.de, fam.zheng@bytedance.com,
	punit.agrawal@bytedance.com, simon.evans@bytedance.com,
	liangma@liangbit.com, "Limonciello,
	Mario" <Mario.Limonciello@amd.com>,
	Piotr Gorski <piotrgorski@cachyos.org>
Subject: Re: [PATCH v9 0/8] Parallel CPU bringup for x86_64
Date: Tue, 21 Feb 2023 08:35:05 +0000	[thread overview]
Message-ID: <5b8f9c89f7015fa80c966c6c7f6fa259db6744f8.camel@infradead.org> (raw)
In-Reply-To: <ee0d0d971a3095d6a1e96ad4f1ba32d2@natalenko.name>

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On Tue, 2023-02-21 at 09:25 +0100, Oleksandr Natalenko wrote:
> 
> 
> Right, sorry. Here it is: http://ix.io/4oLq

$ echo `grep ^00000001 4oLq  | cut -c36-37`
00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 01 03 05 07 09 0b 0d 0f
11 13 15 17 19 1b 1d 1f

Well they look sane enough. All even APIC IDs and then all the odd ones
is a topology that isn't massively surprising.

Does it match what you get *before* suspend/resume?

Obviously we could stick our fingers in our ears and go "la la la" and
just disable it for non-X2APIC, for AMD without X2APIC, or perhaps
disable it on *resume* but still use it at boot. But I'd really like to
understand what's going on and not do voodoo. Thanks for helping!

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  reply	other threads:[~2023-02-21  8:36 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-15 14:54 [PATCH v9 0/8] Parallel CPU bringup for x86_64 Usama Arif
2023-02-15 14:54 ` [PATCH v9 1/8] x86/apic/x2apic: Allow CPU cluster_mask to be populated in parallel Usama Arif
2023-02-16 20:58   ` Kim Phillips
2023-02-15 14:54 ` [PATCH v9 2/8] cpu/hotplug: Move idle_thread_get() to <linux/smpboot.h> Usama Arif
2023-02-15 14:54 ` [PATCH v9 3/8] cpu/hotplug: Add dynamic parallel bringup states before CPUHP_BRINGUP_CPU Usama Arif
2023-02-15 14:54 ` [PATCH v9 4/8] x86/smpboot: Reference count on smpboot_setup_warm_reset_vector() Usama Arif
2023-02-15 14:54 ` [PATCH v9 5/8] x86/smpboot: Split up native_cpu_up into separate phases and document them Usama Arif
2023-02-15 14:54 ` [PATCH v9 6/8] x86/smpboot: Support parallel startup of secondary CPUs Usama Arif
2023-02-15 14:54 ` [PATCH v9 7/8] x86/smpboot: Send INIT/SIPI/SIPI to secondary CPUs in parallel Usama Arif
2023-02-15 14:54 ` [PATCH v9 8/8] x86/smpboot: Serialize topology updates for secondary bringup Usama Arif
2023-02-16  6:34 ` [PATCH v9 0/8] Parallel CPU bringup for x86_64 Paul E. McKenney
2023-02-20 16:08 ` Oleksandr Natalenko
2023-02-20 16:20   ` David Woodhouse
2023-02-20 16:40     ` Oleksandr Natalenko
2023-02-20 20:31       ` David Woodhouse
2023-02-20 21:23         ` Oleksandr Natalenko
2023-02-20 21:34           ` Piotr Gorski
2023-02-20 21:39           ` David Woodhouse
2023-02-20 23:23             ` Kim Phillips
2023-02-20 23:30               ` David Woodhouse
2023-02-21  4:20                 ` Kim Phillips
2023-02-21  7:16                   ` David Woodhouse
2023-02-21  7:27                 ` Oleksandr Natalenko
2023-02-21  7:53                   ` David Woodhouse
2023-02-21  8:05                     ` Oleksandr Natalenko
2023-02-21  8:17                       ` David Woodhouse
2023-02-21  8:25                         ` Oleksandr Natalenko
2023-02-21  8:35                           ` David Woodhouse [this message]
2023-02-21  8:44                             ` Oleksandr Natalenko
2023-02-21  9:06                               ` David Woodhouse
2023-02-21  9:49                                 ` Oleksandr Natalenko
2023-02-21 10:27                                   ` David Woodhouse
2023-02-21 10:47                                     ` [External] " Usama Arif
2023-02-21 11:42                                       ` Oleksandr Natalenko
2023-02-21 11:54                                         ` Usama Arif
2023-02-21 13:22                                           ` David Woodhouse
2023-02-21 11:46                                     ` Oleksandr Natalenko
2023-02-21 11:49                                       ` David Woodhouse
2023-02-21 12:14                                         ` Oleksandr Natalenko
2023-02-21 19:10                                           ` David Woodhouse
2023-02-21 20:04                                             ` [External] " Usama Arif
2023-02-21 21:04                                               ` Oleksandr Natalenko
2023-02-21 21:41                                             ` Thomas Gleixner
2023-02-21 21:44                                               ` David Woodhouse
2023-02-21 23:18                                               ` David Woodhouse
2023-02-22  0:00                                                 ` [External] " Usama Arif
2023-02-22  8:19                                                   ` David Woodhouse
2023-02-22  9:46                                                     ` Thomas Gleixner
2023-02-22  9:51                                                       ` David Woodhouse
2023-02-22  9:31                                                 ` Thomas Gleixner
2023-02-20 22:22           ` Piotr Gorski
2023-02-20 22:23           ` [External] " Usama Arif
2023-02-20 22:41             ` Oleksandr Natalenko
2023-02-22 10:11 ` David Woodhouse
2023-02-22 11:11   ` [External] " Usama Arif
2023-02-22 12:08   ` Brian Gerst
2023-02-22 12:53     ` David Woodhouse
2023-02-22 16:42   ` Thomas Gleixner
2023-02-23 11:07     ` David Woodhouse
2023-02-23 14:37       ` Thomas Gleixner
2023-02-23 15:12         ` David Woodhouse
2023-02-23 19:24       ` [External] " Usama Arif

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