linux-kernel - Re: [PATCH v1 2/3] locking/pvqspinlock, hv: Enable PV qspinlock for Hyper-V

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Date:   Thu, 13 Sep 2018 13:06:13 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Yi Sun <yi.y.sun@...ux.intel.com>
cc:     linux-kernel@...r.kernel.org, x86@...nel.org,
        chao.p.peng@...el.com, chao.gao@...el.com,
        isaku.yamahata@...el.com, michael.h.kelly@...rosoft.com,
        tianyu.lan@...rosoft.com, "K. Y. Srinivasan" <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>
Subject: Re: [PATCH v1 2/3] locking/pvqspinlock, hv: Enable PV qspinlock for
 Hyper-V

On Thu, 13 Sep 2018, Yi Sun wrote:
> +#include <asm/mshyperv.h>
>  
>  /* representing HT siblings of each logical CPU */
>  DEFINE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_sibling_map);
> @@ -1335,6 +1336,7 @@ void __init native_smp_prepare_boot_cpu(void)
>  	/* already set me in cpu_online_mask in boot_cpu_init() */
>  	cpumask_set_cpu(me, cpu_callout_mask);
>  	cpu_set_state_online(me);
> +	hv_init_spinlocks();

No. We have smp_ops.smp_prepare_boot_cpu for that.

Thanks,

	tglx