Hi,
On 14/08/2023 05:25, Henry Wang wrote:
From: Penny Zheng <penny.zh...@arm.com>
SMMU subsystem is only supported in MMU system, so we make it dependent
on CONFIG_HAS_MMU.
"only supported" as in it doesn't work with Xen or the HW is not
supporting it?
Also, I am not entirely convinced that anything in passthrough would
properly work with MPU. At least none of the IOMMU drivers are. So I
would consider to completely disable HAS_PASSTHROUGH.
Signed-off-by: Penny Zheng <penny.zh...@arm.com>
Signed-off-by: Wei Chen <wei.c...@arm.com>
Signed-off-by: Henry Wang <henry.w...@arm.com>
Acked-by: Jan Beulich <jbeul...@suse.com>
---
v5:
- Add Acked-by tag from Jan.
v4:
- No change
v3:
- new patch
---
xen/drivers/passthrough/Kconfig | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/xen/drivers/passthrough/Kconfig b/xen/drivers/passthrough/Kconfig
index 864fcf3b0c..ebb350bc37 100644
--- a/xen/drivers/passthrough/Kconfig
+++ b/xen/drivers/passthrough/Kconfig
@@ -5,6 +5,7 @@ config HAS_PASSTHROUGH
if ARM
config ARM_SMMU
bool "ARM SMMUv1 and v2 driver"
+ depends on MMU
default y
---help---
Support for implementations of the ARM System MMU architecture
@@ -15,7 +16,7 @@ config ARM_SMMU
config ARM_SMMU_V3
bool "ARM Ltd. System MMU Version 3 (SMMUv3) Support" if EXPERT
- depends on ARM_64 && (!ACPI || BROKEN)
+ depends on ARM_64 && (!ACPI || BROKEN) && MMU
---help---
Support for implementations of the ARM System MMU architecture
version 3. Driver is in experimental stage and should not be used in
Cheers,
--
Julien Grall
