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Re: [PATCH V2] hw/riscv: virt: Remove size restriction for pflash

From: Sunil V L
Subject: Re: [PATCH V2] hw/riscv: virt: Remove size restriction for pflash
Date: Mon, 7 Nov 2022 19:38:24 +0530

On Mon, Nov 07, 2022 at 01:06:38PM +0000, Peter Maydell wrote:
> On Mon, 7 Nov 2022 at 13:03, Sunil V L <sunilvl@ventanamicro.com> wrote:
> >
> > The pflash implementation currently assumes fixed size of the
> > backend storage. Due to this, the backend storage file needs to be
> > exactly of size 32M. Otherwise, there will be an error like below.
> >
> > "device requires 33554432 bytes, block backend provides 4194304 bytes"
> >
> > Fix this issue by using the actual size of the backing store.
> >
> > Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
> > ---
> Do you really want the flash device size presented to the guest
> to be variable depending on what the user passed as a block backend?
> I don't think this is how we handle flash devices on other boards...

Hi Peter,

x86 appears to support variable flash but arm doesn't. What is
the reason for not supporting variable size flash in arm?


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