diff options
Diffstat (limited to 'qemu-options.hx')
| -rw-r--r-- | qemu-options.hx | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/qemu-options.hx b/qemu-options.hx index 600614f6e5..77859a248c 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -4182,7 +4182,7 @@ property must be set. These objects are placed in the @table @option -@item -object memory-backend-file,id=@var{id},size=@var{size},mem-path=@var{dir},share=@var{on|off} +@item -object memory-backend-file,id=@var{id},size=@var{size},mem-path=@var{dir},share=@var{on|off},discard-data=@var{on|off} Creates a memory file backend object, which can be used to back the guest RAM with huge pages. The @option{id} parameter is a @@ -4194,6 +4194,12 @@ the path to either a shared memory or huge page filesystem mount. 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. +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 +that @option{discard-data} is only an optimization, and QEMU +might not discard file contents if it aborts unexpectedly or is +terminated using SIGKILL. @item -object rng-random,id=@var{id},filename=@var{/dev/random} |