linux-kernel - RE: [PATCH] topology/sysfs: Hide PPIN on systems that do not support it.

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Message-ID: <f7cb74f128e34b67999ba87a21897f70@intel.com>
Date:   Mon, 25 Apr 2022 22:56:38 +0000
From:   "Luck, Tony" <tony.luck@...el.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
CC:     Borislav Petkov <bp@...en8.de>, "x86@...nel.org" <x86@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        Smita Koralahalli Channabasappa 
        <smita.koralahallichannabasappa@....com>,
        Wei Huang <wei.huang2@....com>,
        Tom Lendacky <thomas.lendacky@....com>,
        "patches@...ts.linux.dev" <patches@...ts.linux.dev>
Subject: RE: [PATCH] topology/sysfs: Hide PPIN on systems that do not support
 it.

> I suggest this be fixed in the topology_ppin() stub implementation.  Do
> it as a nice inlined C function which avoids such problems.  Rather
> than as a crappy macro which causes them...

Greg already fixed this in his tree by dropping the local variable.

Fix should propagate to linux-next today.

-Tony