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Re: Differing PAC behavior between Qemu and Arm FVP

From: Derrick McKee
Subject: Re: Differing PAC behavior between Qemu and Arm FVP
Date: Thu, 30 Jul 2020 16:06:33 -0400

Hi Peter,

I just got a SIGILL trying to execute a stg instruction with the QEMU version later in this thread, but the same instruction works correctly on the FVP.  Are you sure that all the MTE functionality is present in the master head?

On Tue, Jul 28, 2020 at 11:32 AM Peter Maydell <peter.maydell@linaro.org> wrote:
On Tue, 28 Jul 2020 at 16:26, Derrick McKee <derrick.mckee@gmail.com> wrote:
> Hi,
> I think I may have found a behavior different from Qemu's system emulation and Arm's FVP, which is supposed to provide exact hardware behavior.  The Qemu commit I am using is ed67b09529a564d2ceb242a7cb02613bbe0fa3ca from the tgt_arm_mte branch and the FVP is the freely available FVP_Base_RevC-2xAEMv8A from Arm's website.

MTE should all be in master now, does the behaviour still reproduce there?

-- PMM

Derrick McKee
Phone: (703) 957-9362
Email: derrick.mckee@gmail.com

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