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Re: [Qemu-arm] [Qemu-devel] [PATCH 21/23] hw/arm/virt: Support using SMC

From: Andrew Jones
Subject: Re: [Qemu-arm] [Qemu-devel] [PATCH 21/23] hw/arm/virt: Support using SMC for PSCI
Date: Wed, 28 Dec 2016 14:14:07 +0100
User-agent: Mutt/ (2016-04-01)

On Tue, Dec 13, 2016 at 10:36:22AM +0000, Peter Maydell wrote:
> If we are giving the guest a CPU with EL2, it is likely to
> want to use the HVC instruction itself, for instance for
> providing PSCI to inner guest VMs. This makes using HVC
> as the PSCI conduit for the outer QEMU a bad idea. We will
> want to use SMC instead is this case: this makes sense
> because QEMU's PSCI implementation is effectively an
> emulation of functionality provided by EL3 firmware.
> Add code to support selecting the PSCI conduit to use,
> rather than hardcoding use of HVC.
> Signed-off-by: Peter Maydell <address@hidden>
> ---
>  hw/arm/virt.c | 29 ++++++++++++++++++++++-------
>  1 file changed, 22 insertions(+), 7 deletions(-)

Reviewed-by: Andrew Jones <address@hidden> 

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