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Re: [Xen-devel] Xen 4.0.1 "xc_map_foreign_batch: mmap failed: Cannot all

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Subject: Re: [Xen-devel] Xen 4.0.1 "xc_map_foreign_batch: mmap failed: Cannot allocate memory"
From: "Charles Arnold" <carnold@xxxxxxxxxx>
Date: Thu, 16 Dec 2010 13:44:38 -0700
Delivery-date: Thu, 16 Dec 2010 12:45:36 -0800
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>> On 12/16/2010 at 01:33 PM, in message <C9302813.2966F%keir@xxxxxxx>, Keir
Fraser <keir@xxxxxxx> wrote: 
> On 16/12/2010 19:23, "Charles Arnold" <carnold@xxxxxxxxxx> wrote:
> 
>> The bug is that qemu-dm seems to make the assumption that it can mmap from
>> dom0 all the memory with which the guest has been defined instead of the
>> memory
>> that is actually available on the host.
> 
> 32-bit dom0? Hm, I thought the qemu mapcache was supposed to limit the total
> amount of guest memory mapped at one time, for a 32-bit qemu. For 64-bit
> qemu I wouldn't expect to find a limit as low as 3.25G.

Sorry, I should have specified that it is a 64 bit dom0 / hypervisor.

- Charles



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