From: Kim Phillips <kim.phillips@amd.com>
To: David Woodhouse <dwmw2@infradead.org>,
Usama Arif <usama.arif@bytedance.com>, <tglx@linutronix.de>,
<arjan@linux.intel.com>
Cc: <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>,
Mario Limonciello <Mario.Limonciello@amd.com>
Subject: Re: [PATCH v6 07/11] x86/smpboot: Disable parallel boot for AMD CPUs
Date: Tue, 7 Feb 2023 10:27:00 -0600 [thread overview]
Message-ID: <163a0729-628c-4660-4c54-114dca1e4d9e@amd.com> (raw)
In-Reply-To: <7abdd9d4-4ce0-458d-93f4-bff575f04345@amd.com>
On 2/6/23 11:58 AM, Kim Phillips wrote:
> On 2/4/23 9:40 AM, David Woodhouse wrote:
>> On Fri, 2023-02-03 at 13:48 -0600, Kim Phillips wrote:
>>> If I:
>>>
>>> - take dwmw2's parallel-6.2-rc6 branch (commit 459d1c46dbd1)
>>> - remove the set_cpu_bug(c, X86_BUG_NO_PARALLEL_BRINGUP) line from amd.c
>>>
>>> Then:
>>>
>>> - a Ryzen 3000 (Picasso A1/Zen+) notebook I have access to fails to boot.
>>> - Zen 2,3,4-based servers boot fine
>>> - a Zen1-based server doesn't boot.
>>
>> I've changed it to use CPUID 0xb only if we're actually in x2apic mode,
>> which Boris tells me won't be the case on Zen1 because that doesn't
>> support X2APIC.
>>
>> When we're not in x2apic mode, we can use CPUID 0x1 because the 8 bits
>> of APIC ID we find there are perfectly sufficient.
>>
>> New tree in the same place as before, commit ce7e2d1e046a for the
>> parallel-6.2-rc6-part1 tag and 17bbd12ee03 for parallel-6.2-rc6.
>
> Thanks, Zen 1 through 4 based servers all boot both those two tree
> commits successfully.
>
> I'll try that Ryzen again later.
The Ryzen 3000 also successfully boots those two branches now.
Thanks,
Kim
next prev parent reply other threads:[~2023-02-07 16:27 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-02 21:56 [PATCH v6 00/11] Parallel CPU bringup for x86_64 Usama Arif
2023-02-02 21:56 ` [PATCH v6 01/11] x86/apic/x2apic: Fix parallel handling of cluster_mask Usama Arif
2023-02-06 23:20 ` Thomas Gleixner
2023-02-07 10:57 ` David Woodhouse
2023-02-07 11:27 ` David Woodhouse
2023-02-07 14:24 ` Thomas Gleixner
2023-02-07 19:53 ` David Woodhouse
2023-02-07 20:58 ` Thomas Gleixner
2023-02-07 14:22 ` Thomas Gleixner
2023-02-02 21:56 ` [PATCH v6 02/11] cpu/hotplug: Move idle_thread_get() to <linux/smpboot.h> Usama Arif
2023-02-06 23:33 ` Thomas Gleixner
2023-02-07 1:24 ` Paul E. McKenney
2023-02-02 21:56 ` [PATCH v6 03/11] cpu/hotplug: Add dynamic parallel bringup states before CPUHP_BRINGUP_CPU Usama Arif
2023-02-06 23:43 ` Thomas Gleixner
2023-02-02 21:56 ` [PATCH v6 04/11] x86/smpboot: Reference count on smpboot_setup_warm_reset_vector() Usama Arif
2023-02-06 23:48 ` Thomas Gleixner
[not found] ` <57195f701f6d1d70ec440c9a28cbee4cfb81dc41.camel@amazon.co.uk>
2023-02-07 14:39 ` Thomas Gleixner
2023-02-07 16:50 ` Sean Christopherson
2023-02-07 19:48 ` [EXTERNAL][PATCH " David Woodhouse
2023-02-02 21:56 ` [PATCH v6 05/11] x86/smpboot: Split up native_cpu_up into separate phases and document them Usama Arif
2023-02-06 23:59 ` Thomas Gleixner
2023-02-02 21:56 ` [PATCH v6 06/11] x86/smpboot: Support parallel startup of secondary CPUs Usama Arif
2023-02-02 22:30 ` David Woodhouse
2023-02-02 22:50 ` [External] " Usama Arif
2023-02-03 8:14 ` David Woodhouse
2023-02-03 14:41 ` Arjan van de Ven
2023-02-03 18:17 ` Sean Christopherson
2023-02-07 0:07 ` Thomas Gleixner
2023-02-02 21:56 ` [PATCH v6 07/11] x86/smpboot: Disable parallel boot for AMD CPUs Usama Arif
2023-02-03 19:48 ` Kim Phillips
[not found] ` <d5ec64236ba75f0d3f3718fb69b2cb9169d8af0a.camel@amazon.co.uk>
2023-02-03 21:45 ` Kim Phillips
2023-02-03 22:25 ` [EXTERNAL][PATCH " David Woodhouse
2023-02-04 9:07 ` [PATCH " David Woodhouse
2023-02-04 10:09 ` David Woodhouse
2023-02-04 15:40 ` David Woodhouse
2023-02-04 18:18 ` Arjan van de Ven
2023-02-04 22:31 ` David Woodhouse
2023-02-05 22:13 ` [External] " Usama Arif
2023-02-06 8:05 ` David Woodhouse
2023-02-06 12:11 ` Usama Arif
2023-02-06 18:07 ` Sean Christopherson
2023-02-06 17:58 ` Kim Phillips
2023-02-07 16:27 ` Kim Phillips [this message]
2023-02-07 0:23 ` Thomas Gleixner
2023-02-07 10:04 ` David Woodhouse
2023-02-07 14:44 ` Thomas Gleixner
2023-02-07 0:09 ` Thomas Gleixner
[not found] ` <cbd9e88e738dc0c479e87121ca82431731905c73.camel@amazon.co.uk>
2023-02-07 14:46 ` Thomas Gleixner
2023-02-02 21:56 ` [PATCH v6 08/11] x86/smpboot: Send INIT/SIPI/SIPI to secondary CPUs in parallel Usama Arif
2023-02-07 0:28 ` Thomas Gleixner
2023-02-02 21:56 ` [PATCH v6 09/11] x86/mtrr: Avoid repeated save of MTRRs on boot-time CPU bringup Usama Arif
2023-02-02 21:56 ` [PATCH v6 10/11] x86/smpboot: Serialize topology updates for secondary bringup Usama Arif
2023-02-02 21:56 ` [PATCH v6 11/11] x86/smpboot: reuse timer calibration Usama Arif
2023-02-07 0:31 ` Thomas Gleixner
2023-02-07 23:16 ` Arjan van de Ven
2023-02-07 23:55 ` Thomas Gleixner
2023-02-05 19:17 ` [PATCH v6 00/11] Parallel CPU bringup for x86_64 Russ Anderson
2023-02-06 8:28 ` David Woodhouse
2023-02-06 12:18 ` [External] " Usama Arif
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