linux-kernel - RE: [PATCH] x86/sgx: Fix free page accounting

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Date:   Thu, 4 Nov 2021 18:36:55 +0000
From:   "Luck, Tony" <tony.luck@...el.com>
To:     "Chatre, Reinette" <reinette.chatre@...el.com>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
        "jarkko@...nel.org" <jarkko@...nel.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "bp@...en8.de" <bp@...en8.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "linux-sgx@...r.kernel.org" <linux-sgx@...r.kernel.org>,
        "x86@...nel.org" <x86@...nel.org>
CC:     "seanjc@...gle.com" <seanjc@...gle.com>,
        "hpa@...or.com" <hpa@...or.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: RE: [PATCH] x86/sgx: Fix free page accounting

> -/* The free page list lock protected variables prepend the lock. */
> -static unsigned long sgx_nr_free_pages;
> +atomic_long_t sgx_nr_free_pages = ATOMIC_LONG_INIT(0);

You accidentally lost the "static" here. This is still only accessed within this
one source file.

Otherwise:

Reviewed-by: Tony Luck <tony.luck@...el.com>

-Tony