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RE: [Xen-devel] [Patch] Qemu map cache


  • To: <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Cui, Dexuan" <dexuan.cui@xxxxxxxxx>
  • Date: Thu, 7 Dec 2006 10:08:59 +0800
  • Delivery-date: Wed, 06 Dec 2006 18:09:01 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcbxDs4fXr5iECFiTvOWvTyaYNnh8QmqX1vwAHp5f/A=
  • Thread-topic: [Xen-devel] [Patch] Qemu map cache

Hi Keir,
There is a minor mistake in the patch I posted previously.
The "1UL" in the following line should be "1ULL":
#define MCACHE_BUCKET_SIZE (1UL << MCACHE_BUCKET_SHIFT

Sorry for that.

Btw, it seems the patch has not been checked in. Could you give some commetns?
Thanks!

-- Dexuan

-----Original Message-----
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Cui, Dexuan
Sent: 2006年12月5日 1:34
To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] [Patch] Qemu map cache

On IA32 host or IA32 PAE host, at present, generally, we can't create an
HVM guest with more than 2G memory, because generally it's almost
impossible for Qemu to find a large enough and consecutive virtual
address space to map an HVM guest's whole physical address space.
The attached patch fixes this issue using dynamic mapping based on
little blocks of memory.

-- Dexuan Cui

Signed-off-by: Jun Nakajima <jun.nakajima@xxxxxxxxx>
Signed-off-by: Dexuan Cui <dexuan.cui@xxxxxxxxx>

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