linux-kernel - RE: [PATCH] x86/resctrl: Fix unused variable warning in cache_alloc_hsw

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Date:   Wed, 1 Nov 2023 14:33:20 +0000
From:   "Luck, Tony" <tony.luck@...el.com>
To:     Bagas Sanjaya <bagasdotme@...il.com>,
        "Yu, Fenghua" <fenghua.yu@...el.com>,
        "Chatre, Reinette" <reinette.chatre@...el.com>,
        "Peter Newman" <peternewman@...gle.com>,
        "x86@...nel.org" <x86@...nel.org>
CC:     Shaopeng Tan <tan.shaopeng@...itsu.com>,
        James Morse <james.morse@....com>,
        Jamie Iles <quic_jiles@...cinc.com>,
        Babu Moger <babu.moger@....com>,
        Randy Dunlap <rdunlap@...radead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "patches@...ts.linux.dev" <patches@...ts.linux.dev>
Subject: RE: [PATCH] x86/resctrl: Fix unused variable warning in
 cache_alloc_hsw_probe()

> No noticeable regressions on my Acer Aspire E15 (the laptop uses Intel Core
> i3 Haswell), thanks!
>
> Tested-by: Bagas Sanjaya <bagasdotme@...il.com>

Thanks for reporting that you tested. I don't think a Haswell i3 gets as far as
the piece of code that I changed. the wrmsr_safe() will return non-zero and
the function returns before getting to the piece that I changed.

-Tony