From: Richard Henderson <richard.henderson@linaro.org>
To: Peter Maydell <peter.maydell@linaro.org>,
qemu-arm@nongnu.org, qemu-devel@nongnu.org
Subject: Re: [PATCH] target/arm: Make '-cpu max' have a 48-bit PA
Date: Thu, 1 Oct 2020 12:14:05 -0500 [thread overview]
Message-ID: <f8f3a88e-2c8d-74c7-4f38-c21629d86cef@linaro.org> (raw)
In-Reply-To: <20201001160116.18095-1-peter.maydell@linaro.org>
On 10/1/20 11:01 AM, Peter Maydell wrote:
> QEMU supports a 48-bit physical address range, but we don't currently
> expose it in the '-cpu max' ID registers (you get the same range as
> Cortex-A57, which is 44 bits).
>
> Set the ID_AA64MMFR0.PARange field to indicate 48 bits.
>
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
> I forget why I wanted this patch originally, it's been so long
> since I wrote it, but it seems like a useful thing to allow -cpu max
> to have a big PA range...
> ---
> target/arm/cpu64.c | 4 ++++
> 1 file changed, 4 insertions(+)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Were you by chance looking at some of the optional v8.2 extensions, one of
which is a 52-bit VA, and noticed this nit?
r~
prev parent reply other threads:[~2020-10-01 17:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-01 16:01 [PATCH] target/arm: Make '-cpu max' have a 48-bit PA Peter Maydell
2020-10-01 17:14 ` Richard Henderson [this message]
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