Re: [Xen-devel] [PATCH] Make ballooning work with maxmem > mem (i386 version)

[Keir Fraser <keir@xxxxxxxxxxxxx>]

On 10/11/06 15:33, "Glauber de Oliveira Costa" <gcosta@xxxxxxxxxx> wrote:

>> I took both patches and then changed my mind and immediately reverted them.
>> There is a better way: we should support the XENMEM_memory_map hypercall.
>> We should provide a hypercall (domctl) to set a memory_map_limit parameter
>> and then Xen can use that to fake a memory map when XENMEM_memory_map is
>> called. The tools can set that parameter from config['maxmem'].
> 
> And what happens when the hypercall ever returns ENOSYS, like a kernel
> running in a bit old Hypervisor?

Oh, and bear in mind you can always use 'memory=' as a boot parameter to
force the p2m size and mem_map size.

 -- Keir


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