Recent changes to the arm64 MMU code mean that you can no longer map
R/O memory as R/W. Mapping R/W memory now causes a cache invalidation
instruction (DC IVAC) that requires write permissions or else a fault
is generated.
Modify ivshmem-v2 to map each R/O and R/W section individually
Signed-off-by: Grant Ramsay <gramsay@enphaseenergy.com>
Unify the drivers/*/Kconfig menuconfig title strings to the format
"<class> [(acronym)] [bus] drivers".
Including both the full name of the driver class and an acronym makes
menuconfig more user friendly as some of the acronyms are less well-known
than others. It also improves Kconfig search, both via menuconfig and via
the generated Kconfig documentation.
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Replace Kconfig (IVSHMEM_DEV_NAME) based named device_get_binding
with DEVICE_DT_GET_ONE. Since there is only one driver for ivshmem
use the qemu,ivshmem for that.
Signed-off-by: Kumar Gala <galak@kernel.org>
According to Kconfig guidelines, boolean prompts must not start with
"Enable...". The following command has been used to automate the changes
in this patch:
sed -i "s/bool \"[Ee]nables\? \(\w\)/bool \"\U\1/g" **/Kconfig*
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
This easily permits to test ivshmem and basic functionality of a custom
protocol passing through.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This basically adds support for an interrupt based ivshmem variant
called "ivshmem-doorbell".
This allows, via MSI-X, to get multiple vectors for notifications, get
assigned and ID and being able to send a message to another ID (another
VM).
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This is placed into drivers/virtualization as it does not belong to any
existing subsystem.
This is only the ivshmem-plain variant.
This device is provided by qemu or ACRN, and can be used to share memory
either between the host and the VM or between VMs. Here if zephyr is
used as a VM, it will be able to take advantage of such feature.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
