From: Uladzislau Rezki <urezki@gmail.com>
To: peter enderborg <peter.enderborg@sony.com>
Cc: Uladzislau Rezki <urezki@gmail.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
GregKroah-Hartmangregkh@linuxfoundation.org,
peterz@infradead.org
Subject: Re: nr_cpu_ids vs AMD 3970x(32 physical CPUs)
Date: Fri, 3 Jul 2020 21:28:07 +0200 [thread overview]
Message-ID: <20200703192807.GB5207@pc636> (raw)
In-Reply-To: <8a2a55e6-6087-e4bf-3d35-ed4b4c216369@sony.com>
> > Hello, folk.
> >
> > I have a system based on AMD 3970x CPUs. It has 32 physical cores
> > and 64 threads. It seems that "nr_cpu_ids" variable is not correctly
> > set on latest 5.8-rc3 kernel. Please have a look below on dmesg output:
> >
> > <snip>
> > urezki@pc638:~$ sudo dmesg | grep 128
> > [ 0.000000] IOAPIC[0]: apic_id 128, version 33, address 0xfec00000, GSI 0-23
> > [ 0.000000] smpboot: Allowing 128 CPUs, 64 hotplug CPUs
> > [ 0.000000] setup_percpu: NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:128 nr_node_ids:1
>
> My 3950 do
>
>
> [ 0.005271] ACPI: SSDT 0x00000000CA1F5000 0003F1 (v02 ALASKA CPUSSDT 01072009 AMI 01072009)
> [ 0.108266] smpboot: Allowing 32 CPUs, 0 hotplug CPUs
> [ 0.111384] setup_percpu: NR_CPUS:8192 nr_cpumask_bits:32 nr_cpu_ids:32 nr_node_ids:1
>
> (Fedora F32 5.6.18-300) What motherboard and BIOs do you use?
>
I have MSI TRX40 with latest BIOS.
--
Vlad Rezki
next prev parent reply other threads:[~2020-07-03 19:28 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-03 15:57 nr_cpu_ids vs AMD 3970x(32 physical CPUs) Uladzislau Rezki
2020-07-03 16:56 ` Peter Zijlstra
2020-07-03 17:09 ` Uladzislau Rezki
2020-07-03 17:38 ` Peter Zijlstra
2020-07-03 19:26 ` Uladzislau Rezki
2020-07-03 17:07 ` Gabriel C
2020-07-03 17:24 ` Uladzislau Rezki
2020-07-03 17:45 ` Peter Zijlstra
2020-07-03 18:36 ` Gabriel C
2020-07-03 19:05 ` peter enderborg
2020-07-03 19:28 ` Uladzislau Rezki [this message]
2020-07-03 20:08 ` Linus Torvalds
2020-07-03 21:20 ` Uladzislau Rezki
2020-07-03 21:51 ` Matthew Wilcox
2020-07-03 22:22 ` Uladzislau Rezki
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