linux-kernel - Re: compat_alloc_user_space removal, was Re: [PATCH 3/3] scsi: megaraid_sas: simplify compat

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Date:   Thu, 17 Sep 2020 15:57:33 +0100
From:   Christoph Hellwig <hch@...radead.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Christoph Hellwig <hch@...radead.org>,
        Kashyap Desai <kashyap.desai@...adcom.com>,
        Sumit Saxena <sumit.saxena@...adcom.com>,
        Shivasharan S <shivasharan.srikanteshwara@...adcom.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Anand Lodnoor <anand.lodnoor@...adcom.com>,
        Chandrakanth Patil <chandrakanth.patil@...adcom.com>,
        Hannes Reinecke <hare@...e.de>, megaraidlinux.pdl@...adcom.com,
        linux-scsi <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Al Viro <viro@...iv.linux.org.uk>
Subject: Re: compat_alloc_user_space removal, was Re: [PATCH 3/3] scsi:
 megaraid_sas: simplify compat_ioctl handling

On Thu, Sep 17, 2020 at 04:55:49PM +0200, Arnd Bergmann wrote:
> Unfortunately, the commit b902bfb3f0e "arm64: stop using <asm/compat.h>
> directly" seems to introduce a circular header file inclusion between
> linux/compat.h and asm/stat.h, breaking arm64 compilation.
> 
> Moving the compat_u64/compat_s64 definitions to include/asm-generic/compat.h
> works fine though.

I posted a version doing exactly that a few hours ago.