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From: Alex =?utf-8?Q?Benn=C3=A9e?= <alex.bennee@linaro.org>
To: qemu-arm@nongnu.org
Cc: Peter Maydell <peter.maydell@linaro.org>
Subject: Re: Aarch64-qemu
In-reply-to: <CAA8B=UTcsW7R6hskd312cH5=M6hqfWXrVKLW+WkVXvn5KsLoOg@mail.gmail.com>
Date: Wed, 06 Nov 2019 12:06:01 +0000
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Wissem Yahiaoui <wissem.yahiaouii@gmail.com> writes:

> Hi Qemu team,
>
> As I sent you in the first email, that the SVE specific registers in
> aarch64-qemu results an core dumped/segmentation fault. I Tried the
> ZCR_EL1, ZCR_EL2 and ZCR_EL12, it compiles fine with the gnu toolchain, b=
ut
> it doesn't run in qemu. I need to simulate the length check at run-time, I
> am using Qemu but apparently I am missing some step/s.

Peter's already responded - you can't access ZCR_EL1 from userspace. You
need to use the ioctl to query the kernel for the vector length.

>
> Can u please help me to achieve this task?
>
> Regards,
> Wissem Yahiaoui
> Student at Technical University,
>
>
>
>
> On Wed, 6 Nov 2019 at 10:59, Peter Maydell <peter.maydell@linaro.org> wro=
te:
>
>> On Tue, 5 Nov 2019 at 21:39, Wissem Yahiaoui <wissem.yahiaouii@gmail.com>
>> wrote:
>> >
>> > Sure, I will do that. Actually it was my intention but i didn't find t=
he
>> link and it idn't possible to raise an issue in github. Can u please
>> provide me a link?
>>
>> I'm confused, this is email, there are no links. Just
>> use reply-to-all rather than reply so your replies go
>> to both the person whose email you're replying to
>> and also to the mailing list. (You'll have to go back
>> and redo a reply to my original email which went to
>> both the list and to you.)
>>
>> thanks
>> - PMM
>>


--
Alex Benn=C3=A9e