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| author | Markus Armbruster | 2016-03-15 19:34:46 +0100 |
|---|---|---|
| committer | Markus Armbruster | 2016-03-21 21:29:02 +0100 |
| commit | 5503e285041979dd29698ecb41729b3b22622e8d (patch) | |
| tree | a5ab5180713ea767b96236b1d8b7134512325072 /qobject | |
| parent | ivshmem: Tighten check of property "size" (diff) | |
| download | qemu-5503e285041979dd29698ecb41729b3b22622e8d.tar.gz qemu-5503e285041979dd29698ecb41729b3b22622e8d.tar.xz qemu-5503e285041979dd29698ecb41729b3b22622e8d.zip | |
ivshmem: Implement shm=... with a memory backend
ivshmem has its very own code to create and map shared memory.
Replace that with an implicitly created memory backend. Reduces the
number of ways we create BAR 2 from three to two.
The memory-backend-file is currently available only with CONFIG_LINUX,
so this adds a second Linuxism to ivshmem (the other one is eventfd).
Should we ever need to make it portable to systems where
memory-backend-file can't be made to serve, we could create a
memory-backend-shmem that allocates memory with shm_open().
Bonus fix: shared memory files are now created with permissions 0655
instead of 0777.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1458066895-20632-32-git-send-email-armbru@redhat.com>
Diffstat (limited to 'qobject')
0 files changed, 0 insertions, 0 deletions