From: Dirk Gouders <dirk@gouders.net>
To: Borislav Petkov <bp@alien8.de>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Linux x86 <x86@kernel.org>
Subject: Re: AMD Ryzen 7 PRO 7735U: 8 instead of 16 CPUs?
Date: Wed, 09 Apr 2025 14:11:49 +0200 [thread overview]
Message-ID: <ghplhl1qm2.fsf@gouders.net> (raw)
In-Reply-To: <20250409112414.GFZ_ZY3k88JhYTbYJ0@fat_crate.local> (Borislav Petkov's message of "Wed, 9 Apr 2025 13:24:14 +0200")
Borislav Petkov <bp@alien8.de> writes:
> On Wed, Apr 09, 2025 at 12:49:14PM +0200, Dirk Gouders wrote:
>> I got new hardware and after setting up everything, I was wondering why
>> I don't see the expected 16 CPUs in top(1) or /proc/cpuinfo...
>
> Send full dmesg pls.
Oh well, thanks for the hint: CONFIG_NR_CPUS=8
And if I had analyzed that better, I would have noticed myself:
[ 0.059658] CPU topo: CPU limit of 8 reached. Ignoring further CPUs
...
[ 0.059709] CPU topo: Rejected CPUs 8
OK, next recipients are the amdgpu folks with a trace that has a higher
chance the problem isn't me...
Best regards,
Dirk
next prev parent reply other threads:[~2025-04-09 12:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-09 10:49 AMD Ryzen 7 PRO 7735U: 8 instead of 16 CPUs? Dirk Gouders
2025-04-09 11:24 ` Borislav Petkov
2025-04-09 12:11 ` Dirk Gouders [this message]
2025-04-09 15:51 ` Borislav Petkov
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