linux-kernel - Re: [PATCH v6] usb: misc: qcom_eud: Access EUD_MODE

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Message-ID: <CAPHGfUOsk4BjhvGiN-b0UP-JZ48UvGeKFU=dhb=KOAvo8NCPZQ@mail.gmail.com>
Date: Tue, 22 Jul 2025 15:30:11 +0530
From: Komal Bajaj <komal.bajaj@....qualcomm.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Souradeep Chowdhury <quic_schowdhu@...cinc.com>, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        Melody Olvera <quic_molvera@...cinc.com>,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: Re: [PATCH v6] usb: misc: qcom_eud: Access EUD_MODE_MANAGER2 through
 secure calls

On Mon, Jul 21, 2025 at 12:23 PM Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
>
> On Mon, Jul 21, 2025 at 12:08:41PM +0530, Komal Bajaj wrote:
> > EUD_MODE_MANAGER2 register is mapped to a memory region that is marked
> > as read-only for HLOS, enforcing access restrictions that prohibit
> > direct memory-mapped writes via writel().
>
> What is "HLOS"?
>

By HLOS, I meant operating system running at EL1. Do you want me to
change this in the patch?