diff options
| author | Pavel Fedin <p.fedin@samsung.com> | 2015-10-28 12:54:07 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-11-04 15:56:05 +0100 |
| commit | 8d31d6b65a7448582c7bd320fd1b8cfc6cca2720 (patch) | |
| tree | 0b31bffc15551212dff5117a62c6d4df8169446a /qemu-doc.texi | |
| parent | 5e4dfd3d4e87e0464d599ecef06aa8fe78420a9b (diff) | |
backends/hostmem-file: Allow to specify full pathname for backing file
This allows to explicitly specify file name to use with the backend. This
is important when using it together with ivshmem in order to make it backed
by hugetlbfs. By default filename is autogenerated using mkstemp(), and the
file is unlink()ed after creation, effectively making it anonymous. This is
not very useful with ivshmem because it ends up in a memory which cannot be
accessed by something else.
Distinction between directory and file name is done by stat() check. If an
existing directory is given, the code keeps old behavior. Otherwise it
creates or opens a file with the given pathname.
Signed-off-by: Pavel Fedin <p.fedin@samsung.com>
Tested-by: Igor Skalkin <i.skalkin@samsung.com>
Message-Id: <004301d11166$9672fe30$c358fa90$@samsung.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'qemu-doc.texi')
| -rw-r--r-- | qemu-doc.texi | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/qemu-doc.texi b/qemu-doc.texi index 3126abdcd3..460ab716ac 100644 --- a/qemu-doc.texi +++ b/qemu-doc.texi @@ -1299,7 +1299,7 @@ Instead of specifying the <shm size> using POSIX shm, you may specify a memory backend that has hugepage support: @example -qemu-system-i386 -object memory-backend-file,size=1G,mem-path=/mnt/hugepages,id=mb1 +qemu-system-i386 -object memory-backend-file,size=1G,mem-path=/mnt/hugepages/my-shmem-file,id=mb1 -device ivshmem,memdev=mb1 @end example |