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From: Christopher Lameter <cl@linux.com>
To: Atish Patra <atish.patra@wdc.com>
Cc: linux-riscv@lists.infradead.org,
	Albert Ou <aou@eecs.berkeley.edu>,
	Jason Cooper <jason@lakedaemon.net>,
	Alan Kao <alankao@andestech.com>,
	Dmitriy Cherkasov <dmitriy@oss-tech.org>,
	Anup Patel <anup@brainfault.org>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	Johan Hovold <johan@kernel.org>,
	linux-kernel@vger.kernel.org, Palmer Dabbelt <palmer@sifive.com>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Andreas Schwab <schwab@suse.de>,
	Marc Zyngier <marc.zyngier@arm.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Guenter Roeck <linux@roeck-us.net>
Subject: Re: [v5 PATCH 5/8] RISC-V: Compare cpuid with NR_CPUS before mapping.
Date: Thu, 14 Feb 2019 17:59:09 +0000	[thread overview]
Message-ID: <01000168ed298ba3-fea3ca2b-436b-4ce6-a0df-cebe727bf55c-000000@email.amazonses.com> (raw)
In-Reply-To: <1550089092-28783-6-git-send-email-atish.patra@wdc.com>

On Wed, 13 Feb 2019, Atish Patra wrote:

> --- a/arch/riscv/kernel/smpboot.c
> +++ b/arch/riscv/kernel/smpboot.c
> @@ -66,6 +66,11 @@ void __init setup_smp(void)
>  			found_boot_cpu = 1;
>  			continue;
>  		}
> +		if (cpuid >= NR_CPUS) {

Use nr_cpu_ids instead? Its initialized to NR_CPUS but can be restricted
if we can determine on boot how many processor we truly have.

  reply	other threads:[~2019-02-14 17:59 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-13 20:18 [v5 PATCH 0/8] Various SMP related fixes Atish Patra
2019-02-13 20:18 ` [v5 PATCH 1/8] RISC-V: Do not wait indefinitely in __cpu_up Atish Patra
2019-02-13 20:18 ` [v5 PATCH 2/8] RISC-V: Move cpuid to hartid mapping to SMP Atish Patra
2019-02-13 20:18 ` [v5 PATCH 3/8] RISC-V: Remove NR_CPUs check during hartid search from DT Atish Patra
2019-02-13 20:18 ` [v5 PATCH 4/8] RISC-V: Allow hartid-to-cpuid function to fail Atish Patra
2019-02-13 20:18 ` [v5 PATCH 5/8] RISC-V: Compare cpuid with NR_CPUS before mapping Atish Patra
2019-02-14 17:59   ` Christopher Lameter [this message]
2019-02-14 23:33     ` Atish Patra
2019-02-13 20:18 ` [v5 PATCH 6/8] clocksource/drivers/riscv: Add required checks during clock source init Atish Patra
2019-02-14 10:24   ` Daniel Lezcano
2019-02-14 18:21     ` Atish Patra
2019-02-13 20:18 ` [v5 PATCH 7/8] irqchip/irq-sifive-plic: Check and continue in case of an invalid cpuid Atish Patra
2019-02-13 20:18 ` [v5 PATCH 8/8] RISC-V: Assign hwcap as per comman capabilities Atish Patra

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