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From: Tor Vic <torvic9@mailbox.org>
To: Paul Menzel <pmenzel@molgen.mpg.de>
Cc: Usama Arif <usama.arif@bytedance.com>,
	dwmw2@infradead.org, tglx@linutronix.de, kim.phillips@amd.com,
	brgerst@gmail.com, piotrgorski@cachyos.org,
	oleksandr@natalenko.name, 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, fam.zheng@bytedance.com,
	punit.agrawal@bytedance.com, simon.evans@bytedance.com,
	liangma@liangbit.com
Subject: Re: [PATCH v14 00/12] Parallel CPU bringup for x86_64
Date: Sat, 11 Mar 2023 19:23:46 +0000	[thread overview]
Message-ID: <0b55636e-326b-a366-4346-bedddcecc6d0@mailbox.org> (raw)
In-Reply-To: <18ec6bf2-c19a-5fcf-3d6b-4106e2372af1@molgen.mpg.de>



On 10.03.23 20:18, Paul Menzel wrote:
> Dear Tor,
> 

Hi Paul,

> 
> Am 10.03.23 um 20:20 schrieb Tor Vic:
>> On 08.03.23 17:13, Usama Arif wrote:
>>> The main code change over v13 is to enable parallel bringup for 
>>> SEV-ES guests.
> 
> […]
> 
>>>   .../admin-guide/kernel-parameters.txt         |   3 +
>>>   arch/x86/include/asm/cpu.h                    |   1 +
>>>   arch/x86/include/asm/processor.h              |   6 +-
>>>   arch/x86/include/asm/realmode.h               |   4 +-
>>>   arch/x86/include/asm/sev-common.h             |   3 +
>>>   arch/x86/include/asm/sev.h                    |   5 +
>>>   arch/x86/include/asm/smp.h                    |  18 +-
>>>   arch/x86/include/asm/topology.h               |   2 -
>>>   arch/x86/kernel/acpi/sleep.c                  |  30 +-
>>>   arch/x86/kernel/apic/apic.c                   |   2 +-
>>>   arch/x86/kernel/apic/x2apic_cluster.c         | 126 +++---
>>>   arch/x86/kernel/asm-offsets.c                 |   1 +
>>>   arch/x86/kernel/cpu/common.c                  |   6 +-
>>>   arch/x86/kernel/cpu/topology.c                |   2 +-
>>>   arch/x86/kernel/head_64.S                     | 162 ++++++--
>>>   arch/x86/kernel/smpboot.c                     | 366 +++++++++++++-----
>>>   arch/x86/realmode/init.c                      |   3 +
>>>   arch/x86/realmode/rm/trampoline_64.S          |  27 +-
>>>   arch/x86/xen/smp_pv.c                         |   4 +-
>>>   arch/x86/xen/xen-head.S                       |   2 +-
>>>   include/linux/cpuhotplug.h                    |   2 +
>>>   include/linux/smpboot.h                       |   7 +
>>>   kernel/cpu.c                                  |  31 +-
>>>   kernel/smpboot.h                              |   2 -
>>>   24 files changed, 614 insertions(+), 201 deletions(-)
>>>
>>
>> On Linux 6.2, Zen2 and Skylake, no issues or boot problems:
>>
>> Tested-by: Tor Vic <torvic9@mailbox.org>
> 
> Thank you for testing this. It’d be great if you shared the exact timing 
> numbers too. (Just to be sure, did you also test ACPI S3 suspend/resume?)
> 

I have just tested suspend/resume on the Zen2 machine, it works.
Not yet tested on the Skylake platform.

What is the best and simplest way to get these timings numbers?

> 
> Kind regards,
> 
> Paul

      reply	other threads:[~2023-03-11 19:24 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-08 17:13 [PATCH v14 00/12] Parallel CPU bringup for x86_64 Usama Arif
2023-03-08 17:13 ` [PATCH v14 01/12] x86/apic/x2apic: Allow CPU cluster_mask to be populated in parallel Usama Arif
2023-03-08 17:13 ` [PATCH v14 02/12] cpu/hotplug: Move idle_thread_get() to <linux/smpboot.h> Usama Arif
2023-03-08 17:13 ` [PATCH v14 03/12] cpu/hotplug: Add dynamic parallel bringup states before CPUHP_BRINGUP_CPU Usama Arif
2023-03-08 17:13 ` [PATCH v14 04/12] x86/smpboot: Reference count on smpboot_setup_warm_reset_vector() Usama Arif
2023-03-08 17:13 ` [PATCH v14 05/12] x86/smpboot: Split up native_cpu_up into separate phases and document them Usama Arif
2023-03-11  9:19   ` Thomas Gleixner
2023-03-11 10:21     ` David Woodhouse
2023-03-08 17:13 ` [PATCH v14 06/12] x86/smpboot: Remove initial_stack on 64-bit Usama Arif
2023-03-08 17:13 ` [PATCH v14 07/12] x86/smpboot: Remove early_gdt_descr " Usama Arif
2023-03-08 17:13 ` [PATCH v14 08/12] x86/smpboot: Remove initial_gs Usama Arif
2023-03-08 17:13 ` [PATCH v14 09/12] x86/smpboot: Support parallel startup of secondary CPUs Usama Arif
2023-03-13 22:21   ` Brian Gerst
2023-03-08 17:13 ` [PATCH v14 10/12] x86/smpboot: Send INIT/SIPI/SIPI to secondary CPUs in parallel Usama Arif
2023-03-11  8:54   ` Thomas Gleixner
2023-03-11  9:55     ` David Woodhouse
2023-03-11 14:14       ` Thomas Gleixner
2023-03-11 14:25         ` David Woodhouse
2023-03-11 10:17     ` David Woodhouse
2023-03-08 17:13 ` [PATCH v14 11/12] x86/smpboot: Serialize topology updates for secondary bringup Usama Arif
2023-03-08 17:13 ` [PATCH v14 12/12] x86/smpboot: Allow parallel bringup for SEV-ES Usama Arif
2023-03-10 19:20 ` [PATCH v14 00/12] Parallel CPU bringup for x86_64 Tor Vic
2023-03-10 20:18   ` Paul Menzel
2023-03-11 19:23     ` Tor Vic [this message]

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