linux-kernel - RE: [PATCH] arm64: dts: exynos: correct GIC CPU interfaces address range on Exynos7

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <044601d789e7$da54a4f0$8efdeed0$@samsung.com>
Date:   Thu, 5 Aug 2021 16:21:29 +0530
From:   "Alim Akhtar" <alim.akhtar@...sung.com>
To:     "'Marc Zyngier'" <maz@...nel.org>
Cc:     "'Krzysztof Kozlowski'" <krzysztof.kozlowski@...onical.com>,
        "'Rob Herring'" <robh+dt@...nel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-samsung-soc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        "'Chanwoo Choi'" <cw00.choi@...sung.com>,
        "'Pankaj Dubey'" <pankaj.dubey@...sung.com>,
        "'Sam Protsenko'" <semen.protsenko@...aro.org>
Subject: RE: [PATCH] arm64: dts: exynos: correct GIC CPU interfaces address
 range on Exynos7



> -----Original Message-----
> From: Marc Zyngier <maz@...nel.org>
> Sent: 05 August 2021 15:31
> To: Alim Akhtar <alim.akhtar@...sung.com>
> Cc: 'Krzysztof Kozlowski' <krzysztof.kozlowski@...onical.com>; 'Rob
Herring'
> <robh+dt@...nel.org>; devicetree@...r.kernel.org; linux-arm-
> kernel@...ts.infradead.org; linux-samsung-soc@...r.kernel.org; linux-
> kernel@...r.kernel.org; 'Chanwoo Choi' <cw00.choi@...sung.com>;
> 'Pankaj Dubey' <pankaj.dubey@...sung.com>; 'Sam Protsenko'
> <semen.protsenko@...aro.org>
> Subject: Re: [PATCH] arm64: dts: exynos: correct GIC CPU interfaces
address
> range on Exynos7
> 
> On Thu, 05 Aug 2021 10:26:14 +0100,
> "Alim Akhtar" <alim.akhtar@...sung.com> wrote:
> >
> > Hi Krzysztof,
> >
> > > -----Original Message-----
> > > From: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
> > > Sent: 05 August 2021 13:07
> > > To: Rob Herring <robh+dt@...nel.org>; devicetree@...r.kernel.org;
> > > linux- arm-kernel@...ts.infradead.org;
> > > linux-samsung-soc@...r.kernel.org; linux- kernel@...r.kernel.org
> > > Cc: Alim Akhtar <alim.akhtar@...sung.com>; Chanwoo Choi
> > > <cw00.choi@...sung.com>; Pankaj Dubey
> <pankaj.dubey@...sung.com>;
> > > Sam Protsenko <semen.protsenko@...aro.org>; Marc Zyngier
> > > <maz@...nel.org>
> > > Subject: Re: [PATCH] arm64: dts: exynos: correct GIC CPU interfaces
> > > address range on Exynos7
> > >
> > > On 05/08/2021 09:21, Krzysztof Kozlowski wrote:
> > > > The GIC-400 CPU interfaces address range is defined as
> > > > 0x2000-0x3FFF (by ARM).
> > > >
> > >
> > Looking at DDI0471B_gic400_r0p1_trm.pdf, CPU interface range is
> > 0x0000 ~ 0x10000
> 
> I don't where you are getting this range from. The only 64kB range I'm
aware
> of is the optional integration trick to cope with 64kB pages that was
> documented in the initial SBSA spec. The HW itself only decodes 8kB for
the
> CPU interface.
> 
There was a typo in above range, thanks for the clarification. Got it.

> 	M.
> 
> --
> Without deviation from the norm, progress is not possible.