From: Peter Maydell <peter.maydell@linaro.org>
To: Jamie Iles <jamie@jamieiles.com>
Cc: Jamie Iles <jamie.iles@picochip.com>,
qemu-devel@nongnu.org, Aurelien Jarno <aurelien@aurel32.net>,
Paul Brook <paul@codesourcery.com>
Subject: Re: [Qemu-devel] [PATCH] target-arm: support for ARM1176JZ-s cores
Date: Wed, 22 Jun 2011 17:26:36 +0100 [thread overview]
Message-ID: <BANLkTinxLst0eb2-8TZ4ZoKtdfbL-YOO6g@mail.gmail.com> (raw)
In-Reply-To: <20110622161653.GF2704@pulham.picochip.com>
On 22 June 2011 17:16, Jamie Iles <jamie@jamieiles.com> wrote:
> The ARM1176 technically is a v6K core, but the actual definition of v6K
> seems a bit vague on required features.
>
> As wfi is a valid encoding on 1176 I personally don't see this as being
> a blocking issue (though technically incorrect, though most code
> targeted for this CPU presumably wouldn't emit a wfi instruction?).
Yeah, I think we're down in the noise really here. Some older
versions of the Linux kernel incorrectly emitted a WFI insn
rather than the cp15 op, but that bug was fixed. In any case
I doubt anybody's written code that relies on the wfi insn
being implemented as a nop...
Calling it a v6k in qemu is probably on balance better than not.
-- PMM
prev parent reply other threads:[~2011-06-22 16:26 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-21 12:55 [Qemu-devel] [PATCH] target-arm: support for ARM1176JZ-s cores Jamie Iles
2011-06-21 15:43 ` Peter Maydell
2011-06-21 16:13 ` Jamie Iles
2011-06-21 22:13 ` Peter Maydell
2011-06-21 23:42 ` Jamie Iles
2011-06-22 9:40 ` Peter Maydell
2011-06-22 15:45 ` Jamie Iles
2011-06-22 16:01 ` Peter Maydell
2011-06-22 16:16 ` Jamie Iles
2011-06-22 16:26 ` Peter Maydell [this message]
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