diff options
Diffstat (limited to 'qemu-options.hx')
-rw-r--r-- | qemu-options.hx | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/qemu-options.hx b/qemu-options.hx index 5050a49a5e..8ccd5dcaa6 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -3975,6 +3975,14 @@ The @option{share} boolean option determines whether the memory region is marked as private to QEMU, or shared. The latter allows a co-operating external process to access the QEMU memory region. +The @option{share} is also required for pvrdma devices due to +limitations in the RDMA API provided by Linux. + +Setting share=on might affect the ability to configure NUMA +bindings for the memory backend under some circumstances, see +Documentation/vm/numa_memory_policy.txt on the Linux kernel +source tree for additional details. + Setting the @option{discard-data} boolean option to @var{on} indicates that file contents can be destroyed when QEMU exits, to avoid unnecessarily flushing data to the backing file. Note @@ -4017,7 +4025,7 @@ requires an alignment different than the default one used by QEMU, eg the device DAX /dev/dax0.0 requires 2M alignment rather than 4K. In such cases, users can specify the required alignment via this option. -@item -object memory-backend-ram,id=@var{id},merge=@var{on|off},dump=@var{on|off},prealloc=@var{on|off},size=@var{size},host-nodes=@var{host-nodes},policy=@var{default|preferred|bind|interleave} +@item -object memory-backend-ram,id=@var{id},merge=@var{on|off},dump=@var{on|off},share=@var{on|off},prealloc=@var{on|off},size=@var{size},host-nodes=@var{host-nodes},policy=@var{default|preferred|bind|interleave} Creates a memory backend object, which can be used to back the guest RAM. Memory backend objects offer more control than the @option{-m} option that is |