From: Jack Steiner <steiner@sgi.com>
To: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: mingo@elte.hu, ak@suse.de, tglx@linutronix.de,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] - Increase max physical memory size of x86_64
Date: Tue, 25 Mar 2008 11:54:38 -0500 [thread overview]
Message-ID: <20080325165438.GA5298@sgi.com> (raw)
In-Reply-To: <20080325164154.GA5909@alberich.amd.com>
On Tue, Mar 25, 2008 at 05:41:54PM +0100, Andreas Herrmann wrote:
> On Fri, Mar 21, 2008 at 08:31:57AM -0500, Jack Steiner wrote:
> > Increase the maximum physical address size of x86_64 system
> > to 44-bits. This is in preparation for future chips that
> > support larger physical memory sizes.
>
> Shouldn't this be increased to 48?
> AMD family 10h CPUs actually support 48 bits for the
> physical address.
You are probably correct but I don't work with AMD processors
and don't understand their requirements. If someone
wants to submit a patch to support larger phys memory sizes,
I certainly have no objections....
--- jack
WARNING: multiple messages have this Message-ID (diff)
From: Jack Steiner <steiner@sgi.com>
To: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: mingo@elte.hu, ak@suse.de, tglx@linutronix.de,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] - Increase max physical memory size of x86_64
Date: Tue, 25 Mar 2008 11:54:38 -0500 [thread overview]
Message-ID: <20080325165438.GA5298@sgi.com> (raw)
In-Reply-To: <20080325164154.GA5909@alberich.amd.com>
On Tue, Mar 25, 2008 at 05:41:54PM +0100, Andreas Herrmann wrote:
> On Fri, Mar 21, 2008 at 08:31:57AM -0500, Jack Steiner wrote:
> > Increase the maximum physical address size of x86_64 system
> > to 44-bits. This is in preparation for future chips that
> > support larger physical memory sizes.
>
> Shouldn't this be increased to 48?
> AMD family 10h CPUs actually support 48 bits for the
> physical address.
You are probably correct but I don't work with AMD processors
and don't understand their requirements. If someone
wants to submit a patch to support larger phys memory sizes,
I certainly have no objections....
--- jack
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next prev parent reply other threads:[~2008-03-25 16:54 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-21 13:31 [PATCH] - Increase max physical memory size of x86_64 Jack Steiner
2008-03-21 13:31 ` Jack Steiner
2008-03-21 14:24 ` Ingo Molnar
2008-03-21 14:24 ` Ingo Molnar
2008-03-25 16:41 ` Andreas Herrmann
2008-03-25 16:41 ` Andreas Herrmann
2008-03-25 16:54 ` Jack Steiner [this message]
2008-03-25 16:54 ` Jack Steiner
2008-03-25 21:02 ` Chris Snook
2008-03-25 21:02 ` Chris Snook
2008-03-27 17:30 ` Andreas Herrmann
2008-03-27 17:30 ` Andreas Herrmann
2008-03-27 17:55 ` Jack Steiner
2008-03-27 17:55 ` Jack Steiner
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