xen/arm: arm64: Remove MPIDR multiprocessing extensions check

In AArch32, MPIDR bit 31 is defined as multiprocessing extensions bit.
But in AArch64, this bit is always RES1. So the value check for this
bit is no longer necessary in AArch64.

Signed-off-by: Wei Chen <Wei.Chen@linaro.org>
Reviewed-by: Julien Grall <julien.grall@arm.com>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>

diff --git a/xen/arch/arm/arm64/head.S b/xen/arch/arm/arm64/head.S
index 3090beb71ddae23b5d58aed6380b2f1725688f7b..91e281795389a608d07b4a97e4526bf28c55cd5c 100644 (file)
--- a/xen/arch/arm/arm64/head.S
+++ b/xen/arch/arm/arm64/head.S
@@ -267,7 +267,6 @@ common_start:
                                       * find that multiprocessor extensions are
                                       * present and the system is SMP  */
         mrs   x0, mpidr_el1
-        tbz   x0, _MPIDR_SMP, 1f     /* Multiprocessor extension not supported? */
         tbnz  x0, _MPIDR_UP, 1f      /* Uniprocessor system? */
 
         ldr   x13, =(~MPIDR_HWID_MASK)