linux-kernel - Re: [PATCH 0/3] Remove scsi

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Date:   Thu, 19 Aug 2021 09:15:38 +0200
From:   Hannes Reinecke <hare@...e.de>
To:     Bart Van Assche <bvanassche@....org>,
        John Garry <john.garry@...wei.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     satishkh@...co.com, sebaddel@...co.com, kartilak@...co.com,
        jejb@...ux.ibm.com, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org, hch@....de
Subject: Re: [PATCH 0/3] Remove scsi_cmnd.tag

Hey Bart,

Thanks for this!
Really helpful.

Just a tiny wee snag:

On 8/19/21 4:41 AM, Bart Van Assche wrote:
> On 8/18/21 11:08 AM, John Garry wrote:
>> Or maybe you or Bart have a better idea?
> 
> This is how I test compilation of SCSI drivers on a SUSE system (only
> the cross-compilation prefix is distro specific):
> 
>      # Acorn RiscPC
>      make ARCH=arm xconfig
>      # Select the RiscPC architecture (ARCH_RPC)
>      make -j9 ARCH=arm CROSS_COMPILE=arm-suse-linux-gnueabi- </dev/null
> 

Acorn RiscPC is ARMv3, which sadly isn't supported anymore with gcc9.
So for compilation I had to modify Kconfig to select ARMv4:

diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 8355c3895894..22ec9e275335 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -278,7 +278,7 @@ config CPU_ARM1026
  # SA110
  config CPU_SA110
         bool
-       select CPU_32v3 if ARCH_RPC
+       select CPU_32v4 if ARCH_RPC
         select CPU_32v4 if !ARCH_RPC
         select CPU_ABRT_EV4
         select CPU_CACHE_V4WB

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
hare@...e.de                              +49 911 74053 688
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