linux-kernel - RE: [PATCH v2 5/5] x86/mce/mce-inject: Return error code to userspace from mce-inject module

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Date:   Wed, 20 Oct 2021 15:18:35 +0000
From:   "Luck, Tony" <tony.luck@...el.com>
To:     Smita Koralahalli <Smita.KoralahalliChannabasappa@....com>,
        "x86@...nel.org" <x86@...nel.org>,
        "linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     "H . Peter Anvin" <hpa@...or.com>,
        "yazen.ghannam@....com" <yazen.ghannam@....com>
Subject: RE: [PATCH v2 5/5] x86/mce/mce-inject: Return error code to userspace
 from mce-inject module

+	if (!cpu_online(cpu)) {
+		pr_err("No online CPUs available for error injection\n");
+		mce_err.err = -ENODEV;

Maybe "Chosen CPU is not online\n"?

-Tony