[xen master] arm: Fix arch_initialise_vcpu to be unsupported

[patchbot@xxxxxxx]

commit 63fdea768d175e96443a53b95a6441f520743e2e
Author:     Michal Orzel <michal.orzel@xxxxxxx>
AuthorDate: Tue Jul 6 12:28:53 2021 +0200
Commit:     Julien Grall <jgrall@xxxxxxxxxx>
CommitDate: Wed Jul 7 14:05:40 2021 +0100

    arm: Fix arch_initialise_vcpu to be unsupported
    
    Function arch_initialise_vcpu is not reachable as the
    VCPUOP_initialise is an unsupported operation on arm.
    Modify the function by adding ASSERT_UNREACHABLE() and
    returning -EOPNOTSUPP.
    
    Suggested-by: Jan Beulich <jbeulich@xxxxxxxx>
    Signed-off-by: Michal Orzel <michal.orzel@xxxxxxx>
    Reviewed-by: Bertrand Marquis <bertrand.marquis@xxxxxxx>
    Acked-by: Julien Grall <jgrall@xxxxxxxxxx>
---
 xen/arch/arm/domain.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/xen/arch/arm/domain.c b/xen/arch/arm/domain.c
index 74bdbb9082..19c756ac3d 100644
--- a/xen/arch/arm/domain.c
+++ b/xen/arch/arm/domain.c
@@ -923,7 +923,8 @@ int arch_set_info_guest(
 
 int arch_initialise_vcpu(struct vcpu *v, XEN_GUEST_HANDLE_PARAM(void) arg)
 {
-    return default_initialise_vcpu(v, arg);
+    ASSERT_UNREACHABLE();
+    return -EOPNOTSUPP;
 }
 
 int arch_vcpu_reset(struct vcpu *v)
--
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