linux-kernel - Re: [RFC PATCH 1/2] riscv: vendors: andes: Add support to configure the PMA regions

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Message-ID: <e72263ee-10af-1249-5f0d-7e90e8e88441@microchip.com>
Date:   Thu, 8 Sep 2022 11:59:53 +0000
From:   <Conor.Dooley@...rochip.com>
To:     <prabhakar.csengg@...il.com>, <guoren@...ux.alibaba.com>
CC:     <atishp@...shpatra.org>, <prabhakar.mahadev-lad.rj@...renesas.com>,
        <paul.walmsley@...ive.com>, <biju.das.jz@...renesas.com>,
        <palmer@...belt.com>, <aou@...s.berkeley.edu>,
        <atishp@...osinc.com>, <apatel@...tanamicro.com>,
        <geert+renesas@...der.be>, <linux-riscv@...ts.infradead.org>,
        <linux-renesas-soc@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 1/2] riscv: vendors: andes: Add support to configure
 the PMA regions

On 08/09/2022 12:50, Lad, Prabhakar wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> Hi Guo,
> 
>>> -----Original Message-----
>>> From: Conor.Dooley@...rochip.com <Conor.Dooley@...rochip.com>
>>> Sent: 08 September 2022 00:38
>>> To: atishp@...shpatra.org
>>> Cc: Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>;
>>> paul.walmsley@...ive.com; palmer@...belt.com; aou@...s.berkeley.edu;
>>> atishp@...osinc.com; apatel@...tanamicro.com; geert+renesas@...der.be;
>>> linux-riscv@...ts.infradead.org; linux-renesas-soc@...r.kernel.org;
>>> linux-kernel@...r.kernel.org; prabhakar.csengg@...il.com; Biju Das
>>> <biju.das.jz@...renesas.com>
>>> Subject: Re: [RFC PATCH 1/2] riscv: vendors: andes: Add support to
>>> configure the PMA regions
>>>
>>> On 07/09/2022 22:52, Atish Patra wrote:
>>>> EXTERNAL EMAIL: Do not click links or open attachments unless you know
>>>> the content is safe
>>>>
>>>>
>>>> On Tue, Sep 6, 2022 at 3:40 AM <Conor.Dooley@...rochip.com
>>>> <mailto:Conor.Dooley@...rochip.com>> wrote:
>>>>
>>>> On 06/09/2022 11:21, Lad Prabhakar wrote:
>>>>
>>>>> diff --git a/arch/riscv/include/asm/sbi.h
>>>>> b/arch/riscv/include/asm/sbi.h index 2a0ef738695e..10a7c855d125
>>>>> 100644 --- a/arch/riscv/include/asm/sbi.h +++
>>>>> b/arch/riscv/include/asm/sbi.h @@ -37,6 +37,7 @@ enum sbi_ext_id {
>>>>>
>>>>> /* Vendor extensions must lie within this range */
>>>>> SBI_EXT_VENDOR_START = 0x09000000, +       SBI_EXT_ANDES =
>>>>> 0x0900031E, SBI_EXT_VENDOR_END = 0x09FFFFFF, };
>>>>
> I am interested to know what is the status of your patch series [0].
> 
> [0] https://lore.kernel.org/lkml/20210606143848.GA5983@lst.de/T/#m7f4c4cdfb92d6c8672bbfabebda729ce4700e177

Heh, take a look at:
git grep "ERRATA_THEAD*"

This is all can-of-worms territory that we are heading to here, as
the Zicbo* extensions is what is meant to be doing these sorts of
things..