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
..
tpm	backends/tpm: Remove newline character in trace event	2 years ago
Kconfig	backends/iommufd: Introduce the iommufd object	2 years ago
confidential-guest-support.c	confidential guest support: Introduce new confidential guest support class	5 years ago
cryptodev-builtin.c	backends/cryptodev-builtin: Fix local_error leaks	2 years ago
cryptodev-hmp-cmds.c	hmp: add cryptodev info command	3 years ago
cryptodev-lkcf.c	cryptodev: Use CryptoDevBackendOpInfo for operation	3 years ago
cryptodev-vhost-user.c	cryptodev-vhost-user: add asymmetric crypto support	3 years ago
cryptodev-vhost.c	cryptodev: Introduce cryptodev.json	3 years ago
cryptodev.c	backends/cryptodev: Do not ignore throttle/backends Errors	2 years ago
dbus-vmstate.c	backends: Constify VMState	2 years ago
dbus-vmstate1.xml	docs: move D-Bus VMState documentation to source XML	4 years ago
host_iommu_device.c	backends: Introduce HostIOMMUDevice abstract	2 years ago
hostmem-epc.c	backends/hostmem: Report error when memory size is unaligned	2 years ago
hostmem-file.c	backends/hostmem: Report error when memory size is unaligned	2 years ago
hostmem-memfd.c	backends/hostmem: Report error when memory size is unaligned	2 years ago
hostmem-ram.c	HostMem: Add mechanism to opt in kvm guest memfd via MachineState	2 years ago
hostmem-shm.c	hostmem: add a new memory backend based on POSIX shm_open()	2 years ago
hostmem.c	hostmem: simplify the code for merge and dump properties	2 years ago
iommufd.c	backends/iommufd: Implement HostIOMMUDeviceClass::get_cap() handler	2 years ago
meson.build	hostmem: add a new memory backend based on POSIX shm_open()	2 years ago
rng-builtin.c	replay: rng-builtin support	5 years ago
rng-egd.c	backends: Improve error messages when property can no longer be set	3 years ago
rng-random.c	backends: Improve error messages when property can no longer be set	3 years ago
rng.c	error: Drop superfluous #include "qapi/qmp/qerror.h"	3 years ago
trace-events	backends/iommufd: Make iommufd_backend_*() return bool	2 years ago
trace.h	trace: switch position of headers to what Meson requires	6 years ago
vhost-user.c	backends/vhost-user: remove the ioeventfd check	3 years ago