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Re: [Qemu-devel] [PATCH v2 0/9] target-arm: EL3 trap support

From: Peter Maydell
Subject: Re: [Qemu-devel] [PATCH v2 0/9] target-arm: EL3 trap support
Date: Mon, 18 May 2015 18:53:07 +0100

On 22 April 2015 at 18:09, Greg Bellows <address@hidden> wrote:
> Initial patchset adding support for trapping to an EL other than EL1.  Support
> includes changes to interfaces to allow specification of the target EL.  Also
> includes the addition of the ARMv8 CPTR system registers used for controlling
> the trapping of features.
> ---
> v1 -> v2
> - Removed use of MAX through out the patch when setting target_el
> - Updated FP trap support to pass a target exception EL rather than just an
>   enable boolean.
> - Added utility functions for determining the target exception EL
> - Broke up cptr and cpacr access functions
> - Added HCPTR CP register entry and HCPTR/CPTR_EL2 zero entries
> - Broke out TCR changes into their own patch and added support for handling 
> the
>   lack of TTBR1
> - Simplified wfx checking
> - General comment cleanup
> Greg Bellows (9):
>   target-arm: Add exception target el infrastructure
>   target-arm: Extend helpers to route exceptions
>   target-arm: Update interrupt handling to use target EL
>   target-arm: Add AArch64 CPTR registers
>   target-arm: Extend FP checks to use an EL
>   target-arm: Add TTBR regime function and use
>   target-arm: Add EL3 and EL2 TCR checking
>   target-arm: Add WFx syndrome function
>   target-arm: Add WFx instruction trap support

Of this series, patches 1,2,3,6,7,8 look good so I'm applying
them to target-arm.next (with the uint64_t fixup Sergey spotted
for patch 6). I've sent comments on patches 4 and 5. 9 might be
OK but there was enough discussion on it to merit a respin anyway.
(Since Greg has moved on from Linaro I will be doing the respin.)

-- PMM

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