diff mbox series

[V7,24/24] xen/ioreq: Make the IOREQ feature selectable on Arm

Message ID 1611938365-19059-1-git-send-email-olekstysh@gmail.com (mailing list archive)
State New
Headers show
Series None | expand

Commit Message

Oleksandr Jan. 29, 2021, 4:39 p.m. UTC
From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>

The purpose of this patch is to add a possibility for user
to be able to select IOREQ support on Arm (which is disabled
by default) with retaining the current behaviour on x86
(is selected by HVM and it's prompt is not visible).

Also make the IOREQ be depended on CONFIG_EXPERT on Arm since
it is considered as Technological Preview feature and
update SUPPORT.md.

Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Julien Grall <jgrall@amazon.com>

Please note, this is a split/cleanup/hardening of Julien's PoC:
"Add support for Guest IO forwarding to a device emulator"

Changes V5 -> V6:
   - new patch

Changes V6 -> V7:
   - use "If unsure, say N."
   - add Jan's and Julien's A-b
   - update SUPPORT.md
 SUPPORT.md         | 4 ++++
 xen/common/Kconfig | 8 +++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)
diff mbox series


diff --git a/SUPPORT.md b/SUPPORT.md
index 5ee3c86..f69edc7 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -691,6 +691,10 @@  to be used in addition to QEMU.
 	Status: Experimental
+### ARM/IOREQ servers
+	Status: Tech Preview
 ### ARM/Non-PCI device passthrough
     Status: Supported, not security supported
diff --git a/xen/common/Kconfig b/xen/common/Kconfig
index fa049a6..1ecd4f6 100644
--- a/xen/common/Kconfig
+++ b/xen/common/Kconfig
@@ -137,7 +137,13 @@  config HYPFS_CONFIG
 	  want to hide the .config contents from dom0.
-	bool
+	bool "IOREQ support (EXPERT)" if EXPERT && !X86
+	default X86
+	depends on HVM
+	---help---
+	  Enables generic mechanism for providing emulated devices to the guests.
+	  If unsure, say N.
 config KEXEC
 	bool "kexec support"