linux-kernel - Re: CMA enhancement - non-default areas in x86

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Date:   Wed, 13 May 2020 09:14:13 +0200
From:   "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
To:     "Idgar, Or" <Or.Idgar@...l.com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "Ravich, Leonid" <Leonid.Ravich@...l.com>
Subject: Re: CMA enhancement - non-default areas in x86

On Wed, May 13, 2020 at 07:00:12AM +0000, Idgar, Or wrote:
> > For what type of device?
> NTB (Non-Transparent Bridge).


Very odd quoting style...

Anyway, what exactly is a non-transparent bridge, and why doesn't your
bios/uefi implementation properly reserve the memory for it so that the
OS does not use it?

thanks,

greg k-h