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[Xen-devel] Requesting for freeze exception for RMRR

Hi Wei,

Here I'm trying to request the freeze exception for RMRR.

1. clarify the state of patch series / feature.

Reviewed        Acked   RMRR series v7
Y               Y       [v7][PATCH 01/16] xen: introduce 
Y               Y       [v7][PATCH 02/16] xen/vtd: create RMRR mapping
Y N [v7][PATCH 03/16] xen/passthrough: extend hypercall to support rdm reservation policy
Y               Y       [v7][PATCH 04/16] xen: enable XENMEM_memory_map in hvm
Y               N       [v7][PATCH 05/16] hvmloader: get guest memory map into 
Y               N       [v7][PATCH 06/16] hvmloader/pci: skip reserved ranges
Y               N       [v7][PATCH 07/16] hvmloader/e820: construct guest e820 
Y Y [v7][PATCH 08/16] tools/libxc: Expose new hypercall xc_reserved_device_memory_map Y Y [v7][PATCH 09/16] tools: extend xc_assign_device() to support rdm reservation policy Y Y [v7][PATCH 10/16] tools: introduce some new parameters to set rdm policy
Y               Y       [v7][PATCH 11/16] tools/libxl: detect and avoid 
conflicts with RDM
Y Y [v7][PATCH 12/16] tools: introduce a new parameter to set a predefined rdm boundary Y Y [v7][PATCH 13/16] libxl: construct e820 map with RDM information for HVM guest
Y               Y       [v7][PATCH 14/16] xen/vtd: enable USB device assignment
Y Y [v7][PATCH 15/16] xen/vtd: prevent from assign the device with shared rmrr
Y               Y       [v7][PATCH 16/16] tools: parse to enable new rdm policy 

Note Jackson and Campbell also raised some comments to improve current codes.

2. explain why it needs to be in this release (benefits).

RMRR mechanism was broken for a long time and this makes VM always face security issues. In addition, those associated devices can't be passed through to VM and even result in VM crashes.

3. explain why it doesn't break things (risks).

Our policy makes sure that system will work in the original way by default as without the RMRR patches. And especially, this series just impacts those platforms which have RMRR.

4. CC relevant maintainers and release manager.


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