[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Xen-devel] [PATCH 10/20] xen/arm32: head: Correctly report the HW CPU ID



There are no reason to consider the HW CPU ID will be 0 when the
processor is part of a uniprocessor system. At best, this will result to
conflicting output as the rest of Xen use the value directly read from
MPIDR.

So remove the zeroing and logic to check if the CPU is part of a
uniprocessor system.

Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
---
 xen/arch/arm/arm32/head.S | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/xen/arch/arm/arm32/head.S b/xen/arch/arm/arm32/head.S
index 9f40face98..d42a13556c 100644
--- a/xen/arch/arm/arm32/head.S
+++ b/xen/arch/arm/arm32/head.S
@@ -124,16 +124,8 @@ GLOBAL(init_secondary)
         mov   r12, #1                /* r12 := is_secondary_cpu */
 
 common_start:
-        mov   r7, #0                 /* r7 := CPU ID. Initialy zero until we
-                                      * find that multiprocessor extensions are
-                                      * present and the system is SMP */
         mrc   CP32(r1, MPIDR)
-        tst   r1, #MPIDR_SMP         /* Multiprocessor extension supported? */
-        beq   1f
-        tst   r1, #MPIDR_UP          /* Uniprocessor system? */
-        bne   1f
         bic   r7, r1, #(~MPIDR_HWID_MASK) /* Mask out flags to get CPU ID */
-1:
 
         /* Non-boot CPUs wait here until __cpu_up is ready for them */
         teq   r12, #0
-- 
2.11.0


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel

 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.