Date: Mon, 22 Mar 2010 11:53:31 -0700 From: "David O'Brien" <obrien@freebsd.org> To: "M. Warner Losh" <imp@bsdimp.com> Cc: yanefbsd@gmail.com, freebsd-current@freebsd.org, nwhitehorn@freebsd.org, swhetzel@gmail.com Subject: Re: HEADS UP: COMPAT_IA32 renamed COMPAT_FREEBSD32 Message-ID: <20100322185331.GA88847@dragon.NUXI.org> In-Reply-To: <20100312.125032.270969355930630649.imp@bsdimp.com> References: <7d6fde3d1003111720g7dccf93w1f51db88758a5c4d@mail.gmail.com> <20100311.192423.683591382013853731.imp@bsdimp.com> <20100312171758.GB31089@dragon.NUXI.org> <20100312.125032.270969355930630649.imp@bsdimp.com>
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On Fri, Mar 12, 2010 at 12:50:32PM -0700, M. Warner Losh wrote: > : On Thu, Mar 11, 2010 at 07:24:23PM -0700, M. Warner Losh wrote: > So the issue isn't as cut and dried as you might think. There's > multiple different conventions used here in addition to your simple > example. I guess we'd have to take a poll to find out. Seems pretty cut and dried to me. COMPAT_FREEBSDn has an established context that does not match this new usage. That is - same bit'ness, compatibility with an older FreeBSD API for the same architecture. All the other COMPAT_* are for foreign ABI compatibility. COMPAT_LINUX32 possibly should have been "COMPAT_LINUX_X86_64". (or is it MI and is usable as-is for PowerPC and MIPS? I haven't looked that deeply at the code.) > Users of 64-bit systems that will be using COMPAT_FREEBSD32 > are likely to find this a natural extension of the COMPAT_LINUX32 that > they are likely already using. You know I am such a user - and I don't think it is so clear given the existence (and purpose) of "COMPAT_FREEBSDn" for the past many years. While it does match the directory name of 'sys/compat/freebsd32', it may be that "freebsd32" was a poor choice for that directory's name. But given the recent discussion in another thread - I won't even suggest we rename it. -- -- David (obrien@FreeBSD.org)
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