qemu/system
Steve Sistare 91792807d1 machine: aux-ram-share option
Allocate auxilliary guest RAM as an anonymous file that is shareable
with an external process.  This option applies to memory allocated as
a side effect of creating various devices. It does not apply to
memory-backend-objects, whether explicitly specified on the command
line, or implicitly created by the -m command line option.

This option is intended to support new migration modes, in which the
memory region can be transferred in place to a new QEMU process, by sending
the memfd file descriptor to the process.  Memory contents are preserved,
and if the mode also transfers device descriptors, then pages that are
locked in memory for DMA remain locked.  This behavior is a pre-requisite
for supporting vfio, vdpa, and iommufd devices with the new modes.

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/1736967650-129648-7-git-send-email-steven.sistare@oracle.com
Signed-off-by: Fabiano Rosas <farosas@suse.de>
2025-01-29 11:43:04 -03:00
..
arch_init.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
async-teardown.c qemu/osdep: Add excluded fd parameter to qemu_close_all_open_fd() 2024-08-05 08:21:59 +10:00
balloon.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
bootdevice.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
cpu-timers.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
cpus.c cpu: Remove nr_cores from struct CPUState 2025-01-10 23:34:45 +01:00
datadir.c system: Rename softmmu/ directory as system/ 2023-10-08 21:08:08 +02:00
device_tree-stub.c kconfig: allow compiling out QEMU device tree code per target 2024-05-10 15:45:15 +02:00
device_tree.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
dirtylimit.c system/dirtylimit: Don't use migration_is_active() 2024-12-26 07:23:38 +01:00
dma-helpers.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
globals.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
ioport.c qdev: Use machine_get_container() 2025-01-09 18:16:24 +01:00
main.c ui & main loop: Redesign of system-specific main thread event handling 2024-12-31 21:21:34 +01:00
memory.c physmem: qemu_ram_alloc_from_fd extensions 2025-01-29 11:43:03 -03:00
memory_ldst.c.inc system: Move memory_ldst.c.inc to system 2024-02-13 10:59:25 +03:00
memory_mapping.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
meson.build migration: Move cpu-throttle.c from system to migration 2024-10-31 15:48:18 -04:00
physmem.c machine: aux-ram-share option 2025-01-29 11:43:04 -03:00
qdev-monitor.c hw/qdev: Check machine_hotplug_handler in hotplug_unplug_allowed_common 2025-01-13 17:16:03 +01:00
qemu-seccomp.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
qtest.c system/qtest: properly feedback results of clock_[step|set] 2025-01-10 11:18:32 +00:00
rtc.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
runstate-action.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
runstate-hmp-cmds.c system: Rename softmmu/ directory as system/ 2023-10-08 21:08:08 +02:00
runstate.c system/runstate: Fix regression, clarify BQL status of exit notifiers 2025-01-15 18:05:19 +00:00
tpm-hmp-cmds.c system: Rename softmmu/ directory as system/ 2023-10-08 21:08:08 +02:00
tpm.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
trace-events physmem: fd-based shared memory 2025-01-29 11:43:04 -03:00
trace.h system: Rename softmmu/ directory as system/ 2023-10-08 21:08:08 +02:00
vl.c system: propagate Error to gdbserver_start (and other device setups) 2025-01-17 10:44:25 +00:00
watchpoint.c system/watchpoint: Move TCG specific code to accel/tcg/ 2024-01-19 12:28:59 +01:00