From: Keir Fraser <keir@xensource.com>
To: "Huang2, Wei" <Wei.Huang2@amd.com>,
Keir Fraser <keir@xensource.com>,
xen-devel@lists.xensource.com,
Tim Deegan <Tim.Deegan@xensource.com>
Subject: Re: P2M Top Level Page Table
Date: Thu, 29 Mar 2007 18:39:41 +0100 [thread overview]
Message-ID: <C231B86D.C8B5%keir@xensource.com> (raw)
In-Reply-To: <7D748C767B7FA541A8AC5504A4C89A23015685FF@SAUSEXMB2.amd.com>
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On 29/3/07 17:46, "Huang2, Wei" <Wei.Huang2@amd.com> wrote:
> My question is about h_cr3 in VMCB under hap mode. It points to the top level
> of P2M table, which might be located in memory space beyond 4GB. It can cause
> problem potentially.
Sounds like you¹ll need to fix it then. =)
There are several Œlowmem pae top-level caches¹ tucked away in vcpu->arch,
so you could reuse one of those. Or allocate/reallocate the P2M root using
alloc_domheap_pages with a limited address mask, or use xmalloc.
-- Keir
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next prev parent reply other threads:[~2007-03-29 17:39 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-29 16:05 P2M Top Level Page Table Huang2, Wei
2007-03-29 16:41 ` Keir Fraser
2007-03-29 16:46 ` Huang2, Wei
2007-03-29 17:39 ` Keir Fraser [this message]
2007-04-28 1:13 ` confused about the balloon code tgh
2007-04-28 8:16 ` Keir Fraser
2007-04-28 9:06 ` tgh
2007-04-28 18:04 ` Kaushik Barde
2007-04-28 18:37 ` Keir Fraser
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