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...hmem from a topic "QEMU version 2.10.93 User Documentation", Ivshmem: it can create a shared memory that guest device use, so we can use this memory to do something ourselves. First, I create host memory backend: -object memory-backend-file,size=1M,share,mem-path=/dev/shm/ivshmem,id=hostmem Twice, Bind a shared memory device to my guest: -device ivshmem-plain,memdev=hostmem Then I boot ivshmem servi ivshmem-server -p /var/run/ivshmem-server.pid -S /tmp/ivshmem_socket -M ivshmem -m /dev/shm -l 1M -n 2 Next time i get this error: *** Example code, do not use in production...

Hi, > > (a) software rendering: client allocates shared memory buffer, renders > > into it, then passes a file handle for that shmem block together > > with some meta data (size, format, ...) to the wayland server. > > > > (b) gpu rendering: client opens a render node, allocates a buffer, > > asks the cpu to renders into it, exports

Hi, > > (a) software rendering: client allocates shared memory buffer, renders > > into it, then passes a file handle for that shmem block together > > with some meta data (size, format, ...) to the wayland server. > > > > (b) gpu rendering: client opens a render node, allocates a buffer, > > asks the cpu to renders into it, exports

.... Michael S. Tsirkin (6): kvm: remove unused APIs kvm: support any size for pio eventfd kvm: support non datamatch ioeventfd pci: add pci test device kvm: add PV MMIO pci-testdev: add pv mmio test docs/specs/pci-testdev.txt | 26 ++++ hw/Makefile.objs | 1 + hw/dataplane/hostmem.c | 1 + hw/ivshmem.c | 2 + hw/pci-testdev.c | 311 +++++++++++++++++++++++++++++++++++++++++++++ hw/pci/pci.h | 1 + hw/vhost.c | 4 +- hw/virtio-pci.c | 4 +- include/exec/memory.h | 10 ++ include/sysemu/kvm.h...

.... Michael S. Tsirkin (6): kvm: remove unused APIs kvm: support any size for pio eventfd kvm: support non datamatch ioeventfd pci: add pci test device kvm: add PV MMIO pci-testdev: add pv mmio test docs/specs/pci-testdev.txt | 26 ++++ hw/Makefile.objs | 1 + hw/dataplane/hostmem.c | 1 + hw/ivshmem.c | 2 + hw/pci-testdev.c | 311 +++++++++++++++++++++++++++++++++++++++++++++ hw/pci/pci.h | 1 + hw/vhost.c | 4 +- hw/virtio-pci.c | 4 +- include/exec/memory.h | 10 ++ include/sysemu/kvm.h...