linux-kernel - Re: [PATCH v2 2/5] mm: ioremap: Setup phys_addr of struct vm

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Message-ID: <cc0e5f88-d562-74c6-d002-b9cf3196e09e@arm.com>
Date:   Mon, 2 May 2022 15:20:57 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     Kefeng Wang <wangkefeng.wang@...wei.com>, catalin.marinas@....com,
        will@...nel.org, akpm@...ux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     linux-mm@...ck.org, hch@...radead.org, arnd@...db.de,
        Christoph Hellwig <hch@....de>
Subject: Re: [PATCH v2 2/5] mm: ioremap: Setup phys_addr of struct vm_struct



On 4/29/22 16:02, Kefeng Wang wrote:
> Show physical address of each ioremap in /proc/vmallocinfo.
> 
> Acked-by: Andrew Morton <akpm@...ux-foundation.org>
> Reviewed-by: Christoph Hellwig <hch@....de>
> Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>

Reviewed-by: Anshuman Khandual <anshuman.khandual@....com>

> ---
>  mm/ioremap.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/mm/ioremap.c b/mm/ioremap.c
> index 1f9597fbcc07..7cb9996b0c12 100644
> --- a/mm/ioremap.c
> +++ b/mm/ioremap.c
> @@ -32,6 +32,7 @@ void __iomem *ioremap_prot(phys_addr_t phys_addr, size_t size, unsigned long pro
>  	if (!area)
>  		return NULL;
>  	vaddr = (unsigned long)area->addr;
> +	area->phys_addr = phys_addr;
>  
>  	if (ioremap_page_range(vaddr, vaddr + size, phys_addr, __pgprot(prot))) {
>  		free_vm_area(area);