From: Suzuki.Poulose@arm.com (Suzuki K. Poulose)
To: linux-arm-kernel@lists.infradead.org
Subject: ARM64: CPU Hotplug: can't enable more cpus than maxcpus value (kernel 4.5)
Date: Thu, 3 Mar 2016 15:41:43 +0000 [thread overview]
Message-ID: <56D85B37.8020306@arm.com> (raw)
In-Reply-To: <20160303151200.GE19139@leverpostej>
On 03/03/16 15:12, Mark Rutland wrote:
> On Thu, Mar 03, 2016 at 02:59:29PM +0000, Suzuki K. Poulose wrote:
>> On 03/03/16 14:42, Mark Rutland wrote:
>> We don't have this limitation anymore, as we can check if the booting CPU
>> has any conflicting/missing features w.r.t the established set and fail the
>> booting if it does.
>
> While we do this, that's more of a last-ditch effort as opposed to a
> general solution, and I'm not sure it's complete.
>
> What happens when we online a CPU that we determine needs a new erratum
> workaround applied? I didn't think we prohibited onlining in that case.
Right, the erratas can't be applied, as we would have free'd them already.
Cheers
Suzuki
next prev parent reply other threads:[~2016-03-03 15:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-03 14:17 ARM64: CPU Hotplug: can't enable more cpus than maxcpus value (kernel 4.5) Vadim Lomovtsev
2016-03-03 14:42 ` Mark Rutland
2016-03-03 14:59 ` Suzuki K. Poulose
2016-03-03 15:01 ` Suzuki K. Poulose
2016-03-03 15:12 ` Mark Rutland
2016-03-03 15:41 ` Suzuki K. Poulose [this message]
2016-03-07 17:22 ` Suzuki K. Poulose
2016-03-07 17:18 ` Catalin Marinas
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