[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 09/20] xen/arm64: 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_EL1. 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/arm64/head.S | 6 ------ 1 file changed, 6 deletions(-) diff --git a/xen/arch/arm/arm64/head.S b/xen/arch/arm/arm64/head.S index b957eb90fb..08094a273e 100644 --- a/xen/arch/arm/arm64/head.S +++ b/xen/arch/arm/arm64/head.S @@ -277,15 +277,9 @@ GLOBAL(init_secondary) mov x26, #1 /* X26 := skip_zero_bss */ common_start: - mov x24, #0 /* x24 := CPU ID. Initialy zero until we - * find that multiprocessor extensions are - * present and the system is SMP */ mrs x0, mpidr_el1 - tbnz x0, _MPIDR_UP, 1f /* Uniprocessor system? */ - ldr x13, =(~MPIDR_HWID_MASK) bic x24, x0, x13 /* Mask out flags to get CPU ID */ -1: /* Non-boot CPUs wait here until __cpu_up is ready for them */ cbz x22, 1f -- 2.11.0 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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