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Re: [Qemu-ppc] [PATCH 4/8] ppc4xx: Use ram_addr_t in ppc4xx_sdram_adjust


From: David Gibson
Subject: Re: [Qemu-ppc] [PATCH 4/8] ppc4xx: Use ram_addr_t in ppc4xx_sdram_adjust()
Date: Fri, 4 Jan 2019 16:17:30 +1100
User-agent: Mutt/1.10.1 (2018-07-13)

On Thu, Jan 03, 2019 at 03:03:20PM +0100, BALATON Zoltan wrote:
> On Wed, 2 Jan 2019, David Gibson wrote:
> > On Wed, Jan 02, 2019 at 03:06:38AM +0100, BALATON Zoltan wrote:
> > > To avoid overflow if larger values are added later use ram_addr_t for
> > > the sdram_bank_sizes parameter to match ram_size to which it is
> > > compared.
> > 
> > So, technically I think these should be 'hwaddr' (which represents a
> > guest physical address) rather tham ram_addr_t which
> > represents... something subtley different I've never properly
> > understood.
> 
> I don't understand the difference either but ram_size in MachineState where
> this value comes from is ram_addr_t now so I've left is for now. If someone
> knows which type should this be can change it in another patch
> later.

Ok, fair enough.

-- 
David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!
http://www.ozlabs.org/~dgibson

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