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Re: [Xen-devel] [PATCH 13/16] SUPPORT.md: Add secondary memory management features



>>> On 22.11.17 at 18:15, <george.dunlap@xxxxxxxxxx> wrote:
> On 11/21/2017 07:55 PM, Andrew Cooper wrote:
>> On 13/11/17 15:41, George Dunlap wrote:
>>> Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxx>
>>> ---
>>> CC: Ian Jackson <ian.jackson@xxxxxxxxxx>
>>> CC: Wei Liu <wei.liu2@xxxxxxxxxx>
>>> CC: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
>>> CC: Jan Beulich <jbeulich@xxxxxxxx>
>>> CC: Stefano Stabellini <sstabellini@xxxxxxxxxx>
>>> CC: Konrad Wilk <konrad.wilk@xxxxxxxxxx>
>>> CC: Tim Deegan <tim@xxxxxxx>
>>> CC: Tamas K Lengyel <tamas.lengyel@xxxxxxxxxxxx>
>>> ---
>>>  SUPPORT.md | 31 +++++++++++++++++++++++++++++++
>>>  1 file changed, 31 insertions(+)
>>>
>>> diff --git a/SUPPORT.md b/SUPPORT.md
>>> index 0f7426593e..3e352198ce 100644
>>> --- a/SUPPORT.md
>>> +++ b/SUPPORT.md
>>> @@ -187,6 +187,37 @@ Export hypervisor coverage data suitable for analysis 
> by gcov or lcov.
>>>  
>>>      Status: Supported
>>>  
>>> +### Memory Sharing
>>> +
>>> +    Status, x86 HVM: Tech Preview
>>> +    Status, ARM: Tech Preview
>>> +
>>> +Allow sharing of identical pages between guests
>> 
>> "Tech Preview" should imply there is any kind of `xl dedup-these-domains
>> $X $Y` functionality.
>> 
>> The only thing we appears to have an example wrapper around the libxc
>> interface, which requires the user to nominate individual frames, and
>> this doesn't qualify as "functionally complete" IMO.
> 
> Right, I was getting confused with paging, which does have at least some
> code in the tools/ directory.  (But perhaps should also be considered
> experimental?  When was the last time anyone tried to use it?)

Olaf, are you still playing with it every now and then?

Jan


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