From: George Dunlap Date: Wed, 22 Nov 2017 19:19:04 +0000 (+0000) Subject: SUPPORT.md: Add secondary memory management features X-Git-Tag: archive/raspbian/4.11.1-1+rpi1~1^2~66^2~1008 X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=9d9ebd792ee3c07affa0e7b2b3ad57e37893c490;p=xen.git SUPPORT.md: Add secondary memory management features Signed-off-by: George Dunlap Acked-by: Jan Beulich --- diff --git a/SUPPORT.md b/SUPPORT.md index d748fffe88..93629f6104 100644 --- a/SUPPORT.md +++ b/SUPPORT.md @@ -204,6 +204,43 @@ Export hypervisor coverage data suitable for analysis by gcov or lcov. Allows a guest to add or remove memory after boot-time. This is typically done by a guest kernel agent known as a "balloon driver". +### Populate-on-demand memory + + Status, x86 HVM: Supported + +This is a mechanism that allows normal operating systems with only a balloon driver +to boot with memory < maxmem. + +### Memory Sharing + + Status, x86 HVM: Expermental + +Allow sharing of identical pages between guests + +### Memory Paging + + Status, x86 HVM: Experimenal + +Allow pages belonging to guests to be paged to disk + +### Transcendent Memory + + Status: Experimental + +Transcendent Memory (tmem) allows the creation of hypervisor memory pools +which guests can use to store memory +rather than caching in its own memory or swapping to disk. +Having these in the hypervisor +can allow more efficient aggregate use of memory across VMs. + +### Alternative p2m + + Status, x86 HVM: Tech Preview + Status, ARM: Tech Preview + +Allows external monitoring of hypervisor memory +by maintaining multiple physical to machine (p2m) memory mappings. + ## Resource Management ### CPU Pools