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Date:   Wed, 29 Jul 2020 20:41:57 +0900
From:   Stafford Horne <shorne@gmail.com>
To:     Mike Rapoport <rppt@kernel.org>
Cc:     Andrew Morton <akpm@linux-foundation.org>,
        Andy Lutomirski <luto@kernel.org>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
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        Dave Hansen <dave.hansen@linux.intel.com>,
        Ingo Molnar <mingo@redhat.com>,
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        Max Filippov <jcmvbkbc@gmail.com>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Michal Simek <monstr@monstr.eu>,
        Mike Rapoport <rppt@linux.ibm.com>,
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Subject: Re: [PATCH 05/15] h8300, nds32, openrisc: simplify detection of
 memory extents
Message-ID: <20200729114157.GF80756@lianli.shorne-pla.net>
References: <20200728051153.1590-1-rppt@kernel.org>
 <20200728051153.1590-6-rppt@kernel.org>
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On Tue, Jul 28, 2020 at 08:11:43AM +0300, Mike Rapoport wrote:
> From: Mike Rapoport <rppt@linux.ibm.com>
> 
> Instead of traversing memblock.memory regions to find memory_start and
> memory_end, simply query memblock_{start,end}_of_DRAM().
> 
> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
> ---
>  arch/h8300/kernel/setup.c    | 8 +++-----
>  arch/nds32/kernel/setup.c    | 8 ++------
>  arch/openrisc/kernel/setup.c | 9 ++-------
>  3 files changed, 7 insertions(+), 18 deletions(-)

Hi Mike,

For the openrisc part:

Acked-by: Stafford Horne <shorne@gmail.com>

> --- a/arch/openrisc/kernel/setup.c
> +++ b/arch/openrisc/kernel/setup.c
> @@ -48,17 +48,12 @@ static void __init setup_memory(void)
>  	unsigned long ram_start_pfn;
>  	unsigned long ram_end_pfn;
>  	phys_addr_t memory_start, memory_end;
> -	struct memblock_region *region;
>  
>  	memory_end = memory_start = 0;
>  
>  	/* Find main memory where is the kernel, we assume its the only one */
> -	for_each_memblock(memory, region) {
> -		memory_start = region->base;
> -		memory_end = region->base + region->size;
> -		printk(KERN_INFO "%s: Memory: 0x%x-0x%x\n", __func__,
> -		       memory_start, memory_end);
> -	}
> +	memory_start = memblock_start_of_DRAM();
> +	memory_end = memblock_end_of_DRAM();
>  
>  	if (!memory_end) {
>  		panic("No memory!");
> -- 
> 2.26.2
>