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From: Stafford Horne <shorne@gmail.com>
To: Mike Rapoport <rppt@kernel.org>
Cc: linux-sh@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	linux-mips@vger.kernel.org, Max Filippov <jcmvbkbc@gmail.com>,
	Paul Mackerras <paulus@samba.org>,
	sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org,
	Will Deacon <will@kernel.org>, Christoph Hellwig <hch@lst.de>,
	Marek Szyprowski <m.szyprowski@samsung.com>,
	linux-s390@vger.kernel.org, linux-c6x-dev@linux-c6x.org,
	Yoshinori Sato <ysato@users.sourceforge.jp>,
	x86@kernel.org, Russell King <linux@armlinux.org.uk>,
	Mike Rapoport <rppt@linux.ibm.com>,
	clang-built-linux@googlegroups.com,
	Ingo Molnar <mingo@redhat.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	uclinux-h8-devel@lists.sourceforge.jp,
	linux-xtensa@linux-xtensa.org, openrisc@lists.librecores.org,
	Borislav Petkov <bp@alien8.de>, Andy Lutomirski <luto@kernel.org>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	linux-arm-kernel@lists.infradead.org,
	Michal Simek <monstr@monstr.eu>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	iommu@lists.linux-foundation.org,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 05/15] h8300, nds32, openrisc: simplify detection of memory extents
Date: Wed, 29 Jul 2020 20:41:57 +0900
Message-ID: <20200729114157.GF80756@lianli.shorne-pla.net> (raw)
In-Reply-To: <20200728051153.1590-6-rppt@kernel.org>

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
> 

  reply index

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-28  5:11 [PATCH 00/15] memblock: seasonal cleaning^w cleanup Mike Rapoport
2020-07-28  5:11 ` [PATCH 01/15] KVM: PPC: Book3S HV: simplify kvm_cma_reserve() Mike Rapoport
2020-07-28  5:11 ` [PATCH 02/15] dma-contiguous: simplify cma_early_percent_memory() Mike Rapoport
2020-07-28  6:37   ` Christoph Hellwig
2020-07-28  5:11 ` [PATCH 03/15] arm, xtensa: simplify initialization of high memory pages Mike Rapoport
2020-07-28  8:09   ` Max Filippov
2020-07-28  5:11 ` [PATCH 04/15] arm64: numa: simplify dummy_numa_init() Mike Rapoport
2020-07-29  8:30   ` Jonathan Cameron
2020-07-30 12:03   ` Catalin Marinas
2020-07-28  5:11 ` [PATCH 05/15] h8300, nds32, openrisc: simplify detection of memory extents Mike Rapoport
2020-07-29 11:41   ` Stafford Horne [this message]
2020-07-28  5:11 ` [PATCH 06/15] powerpc: fadamp: simplify fadump_reserve_crash_area() Mike Rapoport
2020-07-30 12:15   ` Michael Ellerman
2020-08-01 10:18     ` Mike Rapoport
2020-08-01 10:53       ` Hari Bathini
2020-08-02 13:14       ` Michael Ellerman
2020-07-28  5:11 ` [PATCH 07/15] riscv: drop unneeded node initialization Mike Rapoport
2020-07-28  5:11 ` [PATCH 08/15] mircoblaze: drop unneeded NUMA and sparsemem initializations Mike Rapoport
2020-07-28  5:11 ` [PATCH 09/15] memblock: make for_each_memblock_type() iterator private Mike Rapoport
2020-07-30  1:52   ` Baoquan He
2020-07-28  5:11 ` [PATCH 10/15] memblock: make memblock_debug and related functionality private Mike Rapoport
2020-07-30  1:54   ` Baoquan He
2020-07-28  5:11 ` [PATCH 11/15] memblock: reduce number of parameters in for_each_mem_range() Mike Rapoport
2020-07-30  2:22   ` Baoquan He
2020-07-28  5:11 ` [PATCH 12/15] arch, mm: replace for_each_memblock() with for_each_mem_pfn_range() Mike Rapoport
2020-07-28  5:11 ` [PATCH 13/15] arch, drivers: replace for_each_membock() with for_each_mem_range() Mike Rapoport
2020-07-28 15:02   ` Emil Renner Berthing
2020-07-28  5:11 ` [PATCH 14/15] x86/numa: remove redundant iteration over memblock.reserved Mike Rapoport
2020-07-28 10:44   ` Ingo Molnar
2020-07-28 10:56     ` Mike Rapoport
2020-07-28 11:31       ` Ingo Molnar
2020-07-28 11:02   ` Baoquan He
2020-07-28 14:15     ` Mike Rapoport
2020-07-28 14:23       ` Baoquan He
2020-07-28  5:11 ` [PATCH 15/15] memblock: remove 'type' parameter from for_each_memblock() Mike Rapoport

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