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xen-devel
[Xen-devel] [PATCH 6/6] xenpaging: document outstanding features
Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>
---
docs/misc/xenpaging.txt | 22 ++++++++++++++++++++--
1 file changed, 20 insertions(+), 2 deletions(-)
--- xen-unstable.hg-4.1.22764.orig/docs/misc/xenpaging.txt
+++ xen-unstable.hg-4.1.22764/docs/misc/xenpaging.txt
@@ -31,7 +31,7 @@ crash because the paged-out memory is no
After a reboot of a guest, its guest_id changes, the current xenpaging
binary has no target anymore. To automate restarting of xenpaging after
-guest reboot, specify the number if pages in the guest configuration
+guest reboot, specify the number of pages in the guest configuration
file /etc/xen/vm/<guest_name>:
xenpaging=32768
@@ -41,8 +41,26 @@ changes.
Todo:
+- implement xl support
- implement stopping of xenpaging
-- implement/test live migration
+- implement live migration
+- implement config option for XENPAGING_DEBUG and XENPAGING_POLICY_MRU_SIZE
+- implement config option for xenpaging_dir
+- implement better starting gfn in xenpaging policy
+ an initial gfn number in the middle of the gfn range may avoid page-ins
+ during BIOS startup
+- fix machine_to_phys_mapping[] array handling during page deallocation
+ the gfn of a released page must be maintained properly in the array
+ http://lists.xensource.com/archives/html/xen-devel/2011-01/msg00824.html
+- fix HVMCOPY_gfn_paged_out handling
+ some callers of __hvm_copy() do not handle HVMCOPY_gfn_paged_out, such
+ as hypercalls and the MMIO emulation
+ the recently added waitqueue feature in Xen 4.1 should be used
+- remove all retry code from gfn_to_mfn() calls
+ use the waitqueue feature to hide page-in from the caller and cover
+ all cases where a retry is currently missing
+- do not bounce p2mt to xenpaging
+ p2m_mem_paging_populate/p2m_mem_paging_resume dont make use of p2mt
# vim: tw=72
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