From: Florian Fainelli <f.fainelli@gmail.com>
To: "Álvaro Fernández Rojas" <noltari@gmail.com>,
jonas.gorski@gmail.com, "Florian Fainelli" <f.fainelli@gmail.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Marc Zyngier" <maz@kernel.org>,
bcm-kernel-feedback-list@broadcom.com,
linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] irqchip/bcm-6345-l1: fix SMP support
Date: Mon, 22 Feb 2021 13:00:01 -0800 [thread overview]
Message-ID: <6169cb21-538b-1066-51cb-dd362f811fa1@gmail.com> (raw)
In-Reply-To: <20210222201332.30253-1-noltari@gmail.com>
On 2/22/2021 12:13 PM, Álvaro Fernández Rojas wrote:
> Some BCM6358 devices start with Core #1 instead of Core #0.
> Apart from that, SMP is restricted to 1 CPU since BCM6358 has a shared TLB,
> which makes it impossible for the current SMP support to start both CPUs.
>
> The problem is that smp_processor_id() returns 0 and then cpu_logical_map()
> converts that to 1, which accesses an uninitialized position of intc->cpus[],
> resulting in a kernel panic.
Sounds like you nee to correct the way the cpu_logical_map[] is
populated then?
--
Florian
next prev parent reply other threads:[~2021-02-22 21:01 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-22 20:13 [PATCH] irqchip/bcm-6345-l1: fix SMP support Álvaro Fernández Rojas
2021-02-22 21:00 ` Florian Fainelli [this message]
2021-02-23 12:30 ` Álvaro Fernández Rojas
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