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| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2015-10-07 16:31:47 +0200 |
|---|---|---|
| committer | Marc-André Lureau <marcandre.lureau@redhat.com> | 2015-10-26 10:19:53 +0100 |
| commit | 7d4f4bdaf785dfe9fc41b06f85cc9aaf1b1474ee (patch) | |
| tree | 86f7fa3b33e8816811606da045d0dc042eb9306c /qemu-doc.texi | |
| parent | f7a199b2b4486242271f769bb4bc2638c0413274 (diff) | |
doc: document ivshmem & hugepages
Document and give some examples of hugepages support with ivshmem device
and server.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'qemu-doc.texi')
| -rw-r--r-- | qemu-doc.texi | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/qemu-doc.texi b/qemu-doc.texi index afa226303b..3126abdcd3 100644 --- a/qemu-doc.texi +++ b/qemu-doc.texi @@ -1293,6 +1293,19 @@ copy the shared memory on migration to the destination host. With With the @option{peer} case, the device should be detached and then reattached after migration using the PCI hotplug support. +@subsubsection ivshmem and hugepages + +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 + -device ivshmem,memdev=mb1 +@end example + +ivshmem-server also supports hugepages mount points with the +@option{-m} memory path argument. + @node direct_linux_boot @section Direct Linux Boot |