lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <c21f9f42-d270-d9be-b94e-de4d4b6e5ad5@linux.intel.com>
Date:   Mon, 7 Aug 2023 07:28:46 -0700
From:   Arjan van de Ven <arjan@...ux.intel.com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>
Cc:     x86@...nel.org, Tom Lendacky <thomas.lendacky@....com>,
        Andrew Cooper <andrew.cooper3@...rix.com>,
        Huang Rui <ray.huang@....com>, Juergen Gross <jgross@...e.com>,
        Dimitri Sivanich <dimitri.sivanich@....com>,
        Michael Kelley <mikelley@...rosoft.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>
Subject: Re: [patch 02/53] x86/cpu/topology: Make the APIC mismatch warnings
 complete

On 8/7/2023 6:52 AM, T
>   
> --- a/arch/x86/kernel/cpu/topology_common.c
> +++ b/arch/x86/kernel/cpu/topology_common.c
> @@ -176,6 +176,16 @@ void cpu_parse_topology(struct cpuinfo_x
>   
>   	parse_topology(&tscan, false);
>   
> +	if (c->topo.initial_apicid != c->topo.apicid) {
> +		pr_err(FW_BUG "CPU%4u: APIC ID mismatch. CPUID: 0x%04x APIC: 0x%04x\n",
> +		       cpu, c->topo.initial_apicid, c->topo.apicid);
> +	}
> +
> +	if (c->topo.apicid != cpuid_to_apicid[cpu]) {
> +		pr_err(FW_BUG "CPU%4u: APIC ID mismatch. Firmware: 0x%04x APIC: 0x%04x\n",
> +		       cpu, cpuid_to_apicid[cpu], c->topo.apicid);
> +	}
> +

while these messages are basically the same as current ones they are short one key thing for the user
... which one of the two will be used. Yes one can look up in the source code where the message comes from
and reverse engineer that... or we can just add this to these pr_err() messages


like

pr_err(FW_BUG "CPU%4u: APIC ID mismatch. CPUID: 0x%04x APIC: 0x%04x. APIC value will be used.\n",
		       cpu, c->topo.initial_apicid, c->topo.apicid);


>   	for (dom = TOPO_SMT_DOMAIN; dom < TOPO_MAX_DOMAIN; dom++) {
>   		if (tscan.dom_shifts[dom] == x86_topo_system.dom_shifts[dom])
>   			continue;
> 

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ