From: Stephen Rothwell <sfr@canb•auug.org.au>
To: "H. Peter Anvin" <hpa@zytor•com>
Cc: Dave Hansen <dave@sr71•net>,
linux-kernel@vger•kernel.org, dave.hansen@linux•intel.com,
akpm@linux-foundation•org, tglx@linutronix•de, mingo@elte•hu,
peterz@infradead•org, linux-next@vger•kernel.org, deller@gmx•de
Subject: Re: [PATCH] x86, pkeys: fix siginfo ABI breakage from new field
Date: Sat, 27 Feb 2016 09:10:13 +1100 [thread overview]
Message-ID: <20160227091013.6e0606d1@canb.auug.org.au> (raw)
In-Reply-To: <6C5C3B9B-CAD6-4010-9A3E-AFFF7E13FAE3@zytor.com>
Hi,
On Fri, 26 Feb 2016 09:44:00 -0800 "H. Peter Anvin" <hpa@zytor•com> wrote:
>
>
> __u64 is okay, "unsigned long" is really messy in the presence of 32-on-64 bit ABIs...
Yeah, but unfortunately, any 64 bit scalar type here will change the
alignment of the enclosing unions on (some) 32 bit platforms and thus
break the ABI.
--
Cheers,
Stephen Rothwell
next prev parent reply other threads:[~2016-02-26 22:10 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-26 17:34 [PATCH] x86, pkeys: fix siginfo ABI breakage from new field Dave Hansen
2016-02-26 17:44 ` H. Peter Anvin
2016-02-26 22:10 ` Stephen Rothwell [this message]
2016-02-27 11:41 ` Ingo Molnar
2016-02-27 19:16 ` Dave Hansen
2016-02-27 19:35 ` H. Peter Anvin
2016-02-27 23:26 ` Stephen Rothwell
2016-02-27 23:40 ` [PATCH v2] signals, pkeys: make si_pkey 32 bits Stephen Rothwell
2016-02-29 7:57 ` Ingo Molnar
2016-02-29 8:01 ` [PATCH] x86, pkeys: fix siginfo ABI breakage from new field Ingo Molnar
2016-02-29 22:54 ` Stephen Rothwell
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