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Date: Thu, 17 May 2012 16:25:53 -0700 From: David Daney <ddaney.cavm@...il.com> To: "H. Peter Anvin" <hpa@...or.com> CC: "H.J. Lu" <hjl.tools@...il.com>, Ralf Baechle <ralf@...ux-mips.org>, linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org, torvalds@...ux-foundation.org, mingo@...nel.org, tglx@...utronix.de Subject: Re: [RFC PATCH 00/10] Use __kernel_[u]long_t for x32 user space compatibility On 05/17/2012 04:11 PM, H. Peter Anvin wrote: > On 05/17/2012 04:07 PM, David Daney wrote: >> >> Has anybody checked how this affects MIPS n32 userspace? >> >> I think it totally breaks it. >> > > Do you have any basis whatsoever for that statement? You should have asked for a 'solid basis'. My basis is that the name '__kernel_ulong_t' implies, in my mind, that it would have the width of a kernel unsigned long. Really it should be called something like __abi_alternate_ulong_t. > This should have > zero effect on any non-x32 platforms. After further reflection on this, you are probably right. Sorry for raising the alarm (or would that be crying Wolf?). > >> In addition, 109a1f32 (sysinfo: Use explicit types in<linux/sysinfo.h>) >> is probably bad. I think it may need to be reverted, or somebody should >> fix all the __kernel_{,u}long_t definitions for the ABI that may have >> been broken by the change. > > You realize __kernel_[u]long_t didn't even exist until the 3.4 kernel, > right? Yes. David Daney -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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