qemu/backends
Alexander Graf 4b870dc4d0 hostmem-file: add offset option
Add an option for hostmem-file to start the memory object at an offset
into the target file. This is useful if multiple memory objects reside
inside the same target file, such as a device node.

In particular, it's useful to map guest memory directly into /dev/mem
for experimentation.

To make this work consistently, also fix up all places in QEMU that
expect fd offsets to be 0.

Signed-off-by: Alexander Graf <graf@amazon.com>
Message-Id: <20230403221421.60877-1-graf@amazon.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Peter Xu <peterx@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
2023-05-23 16:47:03 +02:00
..
tpm thread-pool: avoid passing the pool parameter every time 2023-04-25 13:17:28 +02:00
confidential-guest-support.c confidential guest support: Introduce new confidential guest support class 2021-02-08 16:57:37 +11:00
cryptodev-builtin.c cryptodev: Use CryptoDevBackendOpInfo for operation 2023-03-07 12:38:59 -05:00
cryptodev-hmp-cmds.c hmp: add cryptodev info command 2023-03-07 12:38:59 -05:00
cryptodev-lkcf.c cryptodev: Use CryptoDevBackendOpInfo for operation 2023-03-07 12:38:59 -05:00
cryptodev-vhost-user.c cryptodev: Introduce server type in QAPI 2023-03-07 12:38:59 -05:00
cryptodev-vhost.c cryptodev: Introduce cryptodev.json 2023-03-07 12:38:59 -05:00
cryptodev.c cryptodev: Support query-stats QMP command 2023-03-07 12:38:59 -05:00
dbus-vmstate.c dbus-vmstate: Restrict error checks to registered proxies in dbus_get_proxies 2022-08-18 10:35:44 +04:00
dbus-vmstate1.xml docs: move D-Bus VMState documentation to source XML 2021-12-21 10:50:21 +04:00
hostmem-epc.c Fix non-first inclusions of qemu/osdep.h 2023-02-08 07:28:05 +01:00
hostmem-file.c hostmem-file: add offset option 2023-05-23 16:47:03 +02:00
hostmem-memfd.c hostmem: Wire up RAM_NORESERVE via "reserve" property 2021-06-15 20:27:38 +02:00
hostmem-ram.c hostmem: Wire up RAM_NORESERVE via "reserve" property 2021-06-15 20:27:38 +02:00
hostmem.c hostmem: Honor multiple preferred nodes if possible 2022-12-28 14:59:55 +01:00
Kconfig tpm: Move backend code under the 'backends/' directory 2020-06-19 07:25:55 -04:00
meson.build hmp: add cryptodev info command 2023-03-07 12:38:59 -05:00
rng-builtin.c replay: rng-builtin support 2021-02-08 15:15:32 +01:00
rng-egd.c backends: Improve error messages when property can no longer be set 2022-10-27 07:56:56 +02:00
rng-random.c backends: Improve error messages when property can no longer be set 2022-10-27 07:56:56 +02:00
rng.c error: Drop superfluous #include "qapi/qmp/qerror.h" 2023-02-23 13:56:14 +01:00
trace-events docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vhost-user.c backends/vhost-user: remove the ioeventfd check 2023-03-02 03:10:47 -05:00