linux-kernel - Re: [PATCH 3/6] remoteproc: qcom: Add helper function to support IOMMU devmem translation

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Message-ID: <ZwPyE/rQOH181rqz@hu-mojha-hyd.qualcomm.com>
Date: Mon, 7 Oct 2024 20:07:07 +0530
From: Mukesh Ojha <quic_mojha@...cinc.com>
To: <neil.armstrong@...aro.org>
CC: Bjorn Andersson <andersson@...nel.org>,
        Mathieu Poirier
	<mathieu.poirier@...aro.org>,
        Rob Herring <robh@...nel.org>,
        "Krzysztof
 Kozlowski" <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        "Konrad
 Dybcio" <konradybcio@...nel.org>,
        Bartosz Golaszewski
	<bartosz.golaszewski@...aro.org>,
        Manivannan Sadhasivam
	<manivannan.sadhasivam@...aro.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-remoteproc@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Shiraz Hashim <quic_shashim@...cinc.com>
Subject: Re: [PATCH 3/6] remoteproc: qcom: Add helper function to support
 IOMMU devmem translation

On Mon, Oct 07, 2024 at 10:08:16AM +0200, neil.armstrong@...aro.org wrote:
> On 04/10/2024 23:23, Mukesh Ojha wrote:
> > From: Shiraz Hashim <quic_shashim@...cinc.com>
> > 
> > Qualcomm SoCs runnning with Qualcomm EL2 hypervisor(QHEE), IOMMU
> > translation set up for remote processors is managed by QHEE itself
> > however, for a case when these remote processors has to run under KVM
> 
> This is not true, KVM is a Linux hypervisor, remote processors have
> nothing to do with KVM, please rephrase.

Thanks, perhaps something like this,

"However, when same SoC runs with KVM configuration, remoteproc IOMMU
translation needs to be set from Linux host running remoteproc PAS
driver"

-Mukesh