QEMU-Devel Archive on lore.kernel.org
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From: Peter Maydell <peter.maydell@linaro.org>
To: Niek Linnenbank <nieklinnenbank@gmail.com>
Cc: qemu-arm <qemu-arm@nongnu.org>, QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [PATCH v2] hw/misc/allwinner-h3-dramc: enforce 64-bit multiply when calculating row mirror address
Date: Thu, 26 Mar 2020 21:01:18 +0000
Message-ID: <CAFEAcA_qBW1ip26-O05fF-PLZfXJDCa2=A7oCTxPpURsYVc0hw@mail.gmail.com> (raw)
In-Reply-To: <20200323192944.5967-1-nieklinnenbank@gmail.com>

On Mon, 23 Mar 2020 at 19:29, Niek Linnenbank <nieklinnenbank@gmail.com> wrote:
>
> The allwinner_h3_dramc_map_rows function simulates row addressing behavior
> when bootloader software attempts to detect the amount of available SDRAM.
>
> Currently the line that calculates the 64-bit address of the mirrored row
> uses a signed 32-bit multiply operation that in theory could result in the
> upper 32-bit be all 1s. This commit ensures that the row mirror address
> is calculated using only 64-bit operations.
>
> Reported-by: Peter Maydell <peter.maydell@linaro.org>
> Signed-off-by: Niek Linnenbank <nieklinnenbank@gmail.com>
> ---
>  hw/misc/allwinner-h3-dramc.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)



Applied to target-arm.next, thanks.

-- PMM


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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-23 19:29 Niek Linnenbank
2020-03-26 21:01 ` Peter Maydell [this message]

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