From: Christopher Covington <cov@codeaurora.org>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: "Richard W.M. Jones" <rjones@redhat.com>,
QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] aarch64 & gdb: warning: while parsing target description (at line 1): Could not load XML document "arm-core.xml"
Date: Thu, 07 Aug 2014 10:13:08 -0400 [thread overview]
Message-ID: <53E38974.6080600@codeaurora.org> (raw)
In-Reply-To: <CAFEAcA9StMpcd=UyzfSusQ1TZuPD_jVZ=ehQ0+bqjCAggpTNgg@mail.gmail.com>
On 08/07/2014 09:53 AM, Peter Maydell wrote:
> On 7 August 2014 14:43, Christopher Covington <cov@codeaurora.org> wrote:
>> On 08/07/2014 08:03 AM, Peter Maydell wrote:
>>> No, because at the moment our AArch64 TCG implementation
>>> (and the way we configure KVM) assumes that the highest
>>> exception level is running AArch64. We might fix this eventually,
>>> though.
>>
>> When EL3 and EL2 support is added, the bootloader will
>> presumably have to be modified to make the switch from
>> EL3 into EL2. In my experience switching into AArch32
>> EL2 instead of AArch64 EL2 is an easy option to add.
>
> I think the biggest difficulty is not the code to actually
> do the switch but figuring out what the command line
> UI to request "start in AArch32" ought to be and how that
> then gets plumbed into the code to do the actual work.
ELF-32 file passed to -kernel seems to me like a reasonable place to start.
Christopher
--
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
hosted by the Linux Foundation.
next prev parent reply other threads:[~2014-08-07 14:13 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-07 10:42 [Qemu-devel] aarch64 & gdb: warning: while parsing target description (at line 1): Could not load XML document "arm-core.xml" Richard W.M. Jones
2014-08-07 11:18 ` Peter Maydell
2014-08-07 11:29 ` Richard W.M. Jones
2014-08-07 11:35 ` Peter Maydell
2014-08-07 11:43 ` Richard W.M. Jones
2014-08-07 12:03 ` Peter Maydell
2014-08-07 13:43 ` Christopher Covington
2014-08-07 13:53 ` Peter Maydell
2014-08-07 14:13 ` Christopher Covington [this message]
2014-08-07 14:53 ` Peter Maydell
2014-08-07 15:06 ` Richard W.M. Jones
2014-08-07 15:39 ` Peter Maydell
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