riscv/qemu: QEMU main repository: Please see https://www.qemu.org/docs/master/devel/submitting-a-patch.html for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website. http://www.qemu.org - qemu

QEMU main repository: Please see https://www.qemu.org/docs/master/devel/submitting-a-patch.html for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website. http://www.qemu.org

emulation kvm qemu virtualization

History

Stefano Garzarella 4e647fa085 hostmem: add a new memory backend based on POSIX shm_open() shm_open() creates and opens a new POSIX shared memory object. A POSIX shared memory object allows creating memory backend with an associated file descriptor that can be shared with external processes (e.g. vhost-user). The new `memory-backend-shm` can be used as an alternative when `memory-backend-memfd` is not available (Linux only), since shm_open() should be provided by any POSIX-compliant operating system. This backend mimics memfd, allocating memory that is practically anonymous. In theory shm_open() requires a name, but this is allocated for a short time interval and shm_unlink() is called right after shm_open(). After that, only fd is shared with external processes (e.g., vhost-user) as if it were associated with anonymous memory. In the future we may also allow the user to specify the name to be passed to shm_open(), but for now we keep the backend simple, mimicking anonymous memory such as memfd. Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Acked-by: Markus Armbruster <armbru@redhat.com> (QAPI schema) Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Message-Id: <20240618100519.145853-1-sgarzare@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>		2 years ago
..
can.rst	docs: use "buses" rather than "busses"	2 years ago
canokey.rst	docs: correct typos	2 years ago
ccid.rst	docs/ccid: convert to restructuredText	4 years ago
cxl.rst	docs/cxl: fix some typos	2 years ago
igb.rst	docs/system/devices/igb: Note igb is tested for DPDK	3 years ago
ivshmem.rst	docs/specs/ivshmem-spec: Convert to rST	2 years ago
keyboard.rst	escc: emulate dip switch language layout settings on SUN keyboard	3 years ago
net.rst	docs: Remove unused weirdly-named cross-reference targets	3 years ago
nvme.rst	hw/nvme: Add NVMe NGUID property	2 years ago
usb-u2f.rst	docs: Convert u2f.txt to rST	3 years ago
usb.rst	docs/system/devices/usb: Replace the non-existing "qemu" binary	2 years ago
vhost-user-input.rst	docs/system: Add vhost-user-input documentation	2 years ago
vhost-user-rng.rst	docs/system: add a basic enumeration of vhost-user devices	2 years ago
vhost-user.rst	hostmem: add a new memory backend based on POSIX shm_open()	2 years ago
virtio-gpu.rst	docs/system: add basic virtio-gpu documentation	2 years ago
virtio-pmem.rst	docs: collect the disparate device emulation docs into one section	5 years ago
virtio-snd.rst	docs/system: add basic virtio-snd documentation	2 years ago