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

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Message-ID: <2025072210-skier-specks-b043@gregkh>
Date: Tue, 22 Jul 2025 12:10:15 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Komal Bajaj <komal.bajaj@....qualcomm.com>
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 Tue, Jul 22, 2025 at 03:30:11PM +0530, Komal Bajaj wrote:
> 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?

Yes please.