linux-kernel - Re: [patch v5 10/19] x86/smpboot: Teach it about topo.amd_node

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Message-ID: <20240206154829.GOZcJUzRbfv7WUsKdI@fat_crate.local>
Date: Tue, 6 Feb 2024 16:48:29 +0100
From: Borislav Petkov <bp@...en8.de>
To: Thomas Gleixner <tglx@...utronix.de>
Cc: LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
	Tom Lendacky <thomas.lendacky@....com>,
	Andrew Cooper <andrew.cooper3@...rix.com>,
	Arjan van de Ven <arjan@...ux.intel.com>,
	Huang Rui <ray.huang@....com>, Juergen Gross <jgross@...e.com>,
	Dimitri Sivanich <dimitri.sivanich@....com>,
	Sohil Mehta <sohil.mehta@...el.com>,
	K Prateek Nayak <kprateek.nayak@....com>,
	Kan Liang <kan.liang@...ux.intel.com>,
	Zhang Rui <rui.zhang@...el.com>,
	"Paul E. McKenney" <paulmck@...nel.org>,
	Feng Tang <feng.tang@...el.com>,
	Andy Shevchenko <andy@...radead.org>,
	Michael Kelley <mhklinux@...look.com>,
	"Peter Zijlstra (Intel)" <peterz@...radead.org>
Subject: Re: [patch v5 10/19] x86/smpboot: Teach it about topo.amd_node_id

On Tue, Jan 23, 2024 at 01:53:45PM +0100, Thomas Gleixner wrote:
>  static bool match_die(struct cpuinfo_x86 *c, struct cpuinfo_x86 *o)
>  {
> -	if (c->topo.pkg_id == o->topo.pkg_id &&
> -	    c->topo.die_id == o->topo.die_id)
> -		return true;
> -	return false;
> +	if (c->topo.pkg_id != o->topo.pkg_id || c->topo.die_id != o->topo.die_id)
> +		return false;
> +
> +	if (boot_cpu_has(X86_FEATURE_TOPOEXT) && topology_amd_nodes_per_pkg() > 1)

check_for_deprecated_apis: WARNING: arch/x86/kernel/smpboot.c:516: Do not use boot_cpu_has() - use cpu_feature_enabled() instead.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette