From: Philip Herron <herron.philip@googlemail.com>
To: Alex Williamson <alex.williamson@hp.com>, kvm <kvm@vger.kernel.org>
Subject: Re: [RFC] Extending MTRRs above 4G
Date: Wed, 17 Sep 2008 20:47:49 +0100 [thread overview]
Message-ID: <1221680869.6710.3.camel@Omicron-Lire> (raw)
In-Reply-To: <1221673872.16470.27.camel@lappy>
I am not sure if this is relevant but i had the problem that the host
system had to have the paravirtulised guest support (its in processor
type and features in 2.6.26-3 kernel) compiled into the kernel before
the guest virtual machine would see more than 3.5gb memory.
Then recently i found that sometimes if you have a good few virtual
machines running with lots of ram i sometimes get segmentation faults
but i think this is because of the balloning becasue i was overloading
all the ram i had.
On Wed, 2008-09-17 at 11:51 -0600, Alex Williamson wrote:
> t's true, we're only providing MTRRs for memory below 4G. In fact
> rombios32 knows very little, if anything, about memory above 4G, as
> seen
> by memory reporting in the SMBIOS table.
>
> It looks like the Linux kernel MTRR code does have a bail-out point f
next prev parent reply other threads:[~2008-09-17 19:47 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-17 17:51 [RFC] Extending MTRRs above 4G Alex Williamson
2008-09-17 19:47 ` Philip Herron [this message]
2008-09-17 21:05 ` Alex Williamson
2008-09-23 9:19 ` Avi Kivity
2008-09-23 9:18 ` Avi Kivity
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