[xen staging] xen/arm: Fix HAS_PASSTHROUGH selection

[patchbot@xxxxxxx]

commit a084862317daae2efb9c4656e7f8d64fd10dd2b9
Author:     Michal Orzel <michal.orzel@xxxxxxx>
AuthorDate: Thu Jul 31 10:05:21 2025 +0200
Commit:     Michal Orzel <michal.orzel@xxxxxxx>
CommitDate: Thu Jul 31 13:15:03 2025 +0200

    xen/arm: Fix HAS_PASSTHROUGH selection
    
    HAS_PASSTHROUGH should only be selected on MMU systems. It's been like
    that until commit 163c6b589879 added possibility to select HAS_PASSTHROUGH
    if PCI_PASSTHROUGH is enabled on Arm64. This is incorrect as it may result
    in enabling passthrough/ build on MPU systems. PCI_PASSTHROUGH should
    depend on HAS_PASSTHROUGH instead.
    
    Fixes: 163c6b589879 ("xen/arm: pci: introduce PCI_PASSTHROUGH Kconfig 
option")
    Signed-off-by: Michal Orzel <michal.orzel@xxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/arch/arm/Kconfig | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index 17df147b25..a0c8160474 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -9,7 +9,6 @@ config ARM_64
        select 64BIT
        select HAS_FAST_MULTIPLY
        select HAS_VPCI_GUEST_SUPPORT if PCI_PASSTHROUGH
-       select HAS_PASSTHROUGH if PCI_PASSTHROUGH
 
 config ARM
        def_bool y
@@ -263,7 +262,7 @@ source "arch/arm/firmware/Kconfig"
 
 config PCI_PASSTHROUGH
        bool "PCI passthrough" if EXPERT
-       depends on ARM_64
+       depends on ARM_64 && HAS_PASSTHROUGH
        help
          This option enables PCI device passthrough
 
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