linux-kernel - Re: [PATCH] hexagon: switch to NO

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Message-Id: <20180724054704.GA16933@rapoport-lnx>
Date:   Tue, 24 Jul 2018 08:47:04 +0300
From:   Mike Rapoport <rppt@...ux.vnet.ibm.com>
To:     Richard Kuo <rkuo@...eaurora.org>
Cc:     Michal Hocko <mhocko@...nel.org>, linux-hexagon@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] hexagon: switch to NO_BOOTMEM

On Mon, Jul 23, 2018 at 04:23:39PM -0500, Richard Kuo wrote:
> 
> On Mon, Jul 16, 2018 at 10:43:18AM +0300, Mike Rapoport wrote:
> > This patch adds registration of the system memory with memblock, eliminates
> > bootmem initialization and converts early memory reservations from bootmem
> > to memblock.
> > 
> > Signed-off-by: Mike Rapoport <rppt@...ux.vnet.ibm.com>
> 
> Sorry for the delay, and thanks for this patch.
> 
> I think the first memblock_reserve should use ARCH_PFN_OFFSET instead of
> PHYS_OFFSET.

memblock_reserve gets physical address rather than a pfn.

If I read arch/hexagon/include/asm/mem-layout.h correctly, the PHYS_OFFSET
*is* the physical address of the RAM and ARCH_PFN_OFFSET is the first pfn:

#define PHYS_PFN_OFFSET	(PHYS_OFFSET >> PAGE_SHIFT)
#define ARCH_PFN_OFFSET	PHYS_PFN_OFFSET

Did I miss something?
 
> If you can amend that I'd be happy to take it through my tree or it can go
> through any other.
> 
> 
> Thanks,
> Richard Kuo
> 
> 
> -- 
> Employee of Qualcomm Innovation Center, Inc.
> Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, 
> a Linux Foundation Collaborative Project
> 

-- 
Sincerely yours,
Mike.