linux-kernel - Re: [PATCH v6 8/8] x86/microcode/AMD: Don't scan past the CPU equivalence table data

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Message-ID: <20180618183016.GF24921@zn.tnic>
Date:   Mon, 18 Jun 2018 20:30:16 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     "Maciej S. Szmigiero" <mail@...iej.szmigiero.name>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 8/8] x86/microcode/AMD: Don't scan past the CPU
 equivalence table data

On Mon, Jun 18, 2018 at 08:11:53PM +0200, Maciej S. Szmigiero wrote:
> The equivalence table size can be computed in the late loader - there is
> no problem there.
> 
> However, this computed size needs to be passed somehow to functions
> scanning the equivalence table.

Ok, then let's make a compromise with a proper global descriptor which
gets passed around:

static struct equiv_cpu_table {
        struct equiv_cpu_entry *table;
        unsigned int size;
} *equiv_table;

But make that conversion in a prepatch pls.

Thx.

-- 
Regards/Gruss,
    Boris.

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