linux-kernel - Re: [PATCH 1/2] io_uring: fix big-endian compat signal mask handling

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Message-ID: <a29338b9-60ad-a4da-da9d-a0c522a5b9df@kernel.dk>
Date:   Mon, 25 Mar 2019 10:05:47 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Arnd Bergmann <arnd@...db.de>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     Alexander Viro <viro@...iv.linux.org.uk>,
        Hannes Reinecke <hare@...e.com>,
        Matthew Wilcox <willy@...radead.org>,
        David Hildenbrand <david@...hat.com>,
        Nikolay Borisov <nborisov@...e.com>,
        linux-block@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] io_uring: fix big-endian compat signal mask handling

On 3/25/19 8:34 AM, Arnd Bergmann wrote:
> On big-endian architectures, the signal masks are differnet
> between 32-bit and 64-bit tasks, so we have to use a different
> function for reading them from user space.
> 
> io_cqring_wait() initially got this wrong, and always interprets
> this as a native structure. This is ok on x86 and most arm64,
> but not on s390, ppc64be, mips64be, sparc64 and parisc.

Thanks Arnd, applied.

Was there a 2/2 patch? I only received this one, 1/2.

-- 
Jens Axboe