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drivers: vhost: Add Xen-MMIO VIRTIO backend #91605

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drivers: vhost: Add Xen-MMIO VIRTIO backend #91605

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9a620d7
[DNM] manifest: add Xen module
soburi Jun 13, 2025
ecc4750
modules: add and migrate to the Xen module
soburi Jun 14, 2025
2bb5f42
[DNM] manifest: Update Xen module
soburi Jun 13, 2025
710d11d
arch: arm64: core: xen: hypercall: Add `dm_op` hypercall
soburi May 17, 2025
754452c
drivers: xen: add more hypercall wrapper
soburi May 18, 2025
0ef7694
drivers: xen: implement grant table operations
soburi Jul 29, 2025
834a8a3
drivers: virtio: Separate macros into a common header
soburi Jul 21, 2025
071ee76
drivers: xen: add basic XenStore access features
soburi Jun 15, 2025
8ed4fd1
drivers: Introduce vhost driver subsystem
soburi Jul 21, 2025
af226c7
drivers: vhost: add Xen MMIO VirtIO backend
soburi Jun 13, 2025
9376df3
samples: drivers: virtualization: add vhost sample application
soburi May 17, 2025
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13 changes: 13 additions & 0 deletions MAINTAINERS.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -5848,6 +5848,19 @@ West:
- "area: Networking"
- "area: Crypto / RNG"

"West project: xen":
status: maintained
maintainers:
- firscity
collaborators:
- lorc
- luca-fancellu
- soburi
files:
- modules/xen/
labels:
- "area: Xen Platform"

"West project: zcbor":
status: maintained
maintainers:
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4 changes: 2 additions & 2 deletions arch/arm64/core/xen/enlighten.c
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Expand Up @@ -7,8 +7,8 @@
#include <zephyr/arch/arm64/hypercall.h>
#include <zephyr/xen/events.h>
#include <zephyr/xen/generic.h>
#include <zephyr/xen/public/xen.h>
#include <zephyr/xen/public/memory.h>
#include <xen/public/xen.h>
#include <xen/public/memory.h>

#include <zephyr/device.h>
#include <zephyr/init.h>
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5 changes: 3 additions & 2 deletions arch/arm64/core/xen/hypercall.S
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Expand Up @@ -5,8 +5,8 @@

#include <zephyr/toolchain.h>
#include <zephyr/linker/sections.h>
#include <zephyr/xen/public/arch-arm.h>
#include <zephyr/xen/public/xen.h>
#include <xen/public/arch-arm.h>
#include <xen/public/xen.h>

#define HYPERCALL(hypercall) \
GTEXT(HYPERVISOR_##hypercall); \
Expand All @@ -23,6 +23,7 @@ HYPERCALL(sched_op);
HYPERCALL(event_channel_op);
HYPERCALL(hvm_op);
HYPERCALL(memory_op);
HYPERCALL(dm_op);
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Generic comment regarding commit message for arch: arm64: core: xen: hypercall: Add dm_op hypercall:

You need to not only describe what was added, but also explain why it is needed in Zephyr and how it will be used.


#ifdef CONFIG_XEN_DOM0
HYPERCALL(domctl);
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1 change: 1 addition & 0 deletions drivers/CMakeLists.txt
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Expand Up @@ -91,6 +91,7 @@ add_subdirectory_ifdef(CONFIG_STEPPER stepper)
add_subdirectory_ifdef(CONFIG_SYSCON syscon)
add_subdirectory_ifdef(CONFIG_SYS_CLOCK_EXISTS timer)
add_subdirectory_ifdef(CONFIG_TEE tee)
add_subdirectory_ifdef(CONFIG_VHOST vhost)
add_subdirectory_ifdef(CONFIG_VIDEO video)
add_subdirectory_ifdef(CONFIG_VIRTIO virtio)
add_subdirectory_ifdef(CONFIG_VIRTUALIZATION virtualization)
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1 change: 1 addition & 0 deletions drivers/Kconfig
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Expand Up @@ -90,6 +90,7 @@ source "drivers/syscon/Kconfig"
source "drivers/timer/Kconfig"
source "drivers/usb/Kconfig"
source "drivers/usb_c/Kconfig"
source "drivers/vhost/Kconfig"
source "drivers/video/Kconfig"
source "drivers/virtio/Kconfig"
source "drivers/virtualization/Kconfig"
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6 changes: 3 additions & 3 deletions drivers/serial/uart_hvc_xen.c
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Expand Up @@ -9,9 +9,9 @@
#include <zephyr/xen/events.h>
#include <zephyr/xen/generic.h>
#include <zephyr/xen/hvm.h>
#include <zephyr/xen/public/io/console.h>
#include <zephyr/xen/public/sched.h>
#include <zephyr/xen/public/xen.h>
#include <xen/public/io/console.h>
#include <xen/public/sched.h>
#include <xen/public/xen.h>

#include <zephyr/device.h>
#include <zephyr/init.h>
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2 changes: 1 addition & 1 deletion drivers/serial/uart_hvc_xen_consoleio.c
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Expand Up @@ -10,7 +10,7 @@
*/

#include <zephyr/arch/arm64/hypercall.h>
#include <zephyr/xen/public/xen.h>
#include <xen/public/xen.h>

#include <zephyr/device.h>
#include <zephyr/drivers/uart.h>
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7 changes: 7 additions & 0 deletions drivers/vhost/CMakeLists.txt
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@@ -0,0 +1,7 @@
# Copyright (c) 2025 TOKITA Hiroshi
# SPDX-License-Identifier: Apache-2.0

zephyr_library()

zephyr_library_sources_ifdef(CONFIG_VHOST vringh.c)
zephyr_library_sources_ifdef(CONFIG_VHOST_XEN_MMIO vhost_xen_mmio.c)
22 changes: 22 additions & 0 deletions drivers/vhost/Kconfig
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@@ -0,0 +1,22 @@
# Copyright (c) 2025 TOKITA Hiroshi
# SPDX-License-Identifier: Apache-2.0

config VHOST
bool "support for VIRTIO"
help
Enable options for VIRTIO

if VHOST

config VHOST_XEN_MMIO
bool "support for MMIO-based VIRTIO backend on Xen hypervisor"
default y
depends on DT_HAS_XEN_VHOST_MMIO_ENABLED
help
Enable VIRTIO-MMIO backedn on Xen hypervisor

endif # VIRTIO

module = VHOST
module-str = VHOST
source "subsys/logging/Kconfig.template.log_config"
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