Date: Wed, 28 Jul 2010 16:41:55 -0700 From: Juli Mallett <jmallett@FreeBSD.org> To: "Jayachandran C." <c.jayachandran@gmail.com> Cc: freebsd-mips@freebsd.org Subject: Re: Support for 64bit userspace. Message-ID: <AANLkTikZKS8iuST1dp5yfo6P6kaif4b1YzsKAskk_wB=@mail.gmail.com> In-Reply-To: <AANLkTim738fcSO%2BL70BLoabOareLhSES2nAFe6pKoMrk@mail.gmail.com> References: <AANLkTikAjRTMn0m1DemdmUXKMydmyQPxij%2BN=1d9L2=y@mail.gmail.com> <AANLkTim738fcSO%2BL70BLoabOareLhSES2nAFe6pKoMrk@mail.gmail.com>
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Hi JC, On Wed, Jul 28, 2010 at 16:32, Jayachandran C. <c.jayachandran@gmail.com> w= rote: > On Wed, Jul 28, 2010 at 2:04 AM, Jayachandran C. > <c.jayachandran@gmail.com> wrote: >> Here's my initial work to get 64bit user space. =A0With this set of >> changes, I can boot to the single user shell with n64 /sbin/init and >> /bin/sh. =A0There are still issues to fix, and the dynamic loader is >> still not working, but I think this would be a good time to get some >> initial feedback. > > The dynamic loader seems to work after some straight-forward changes. > The only change is that the got[1] entry needs to be 64-bit. =A0The > changes are attached. > > There is still an occasional kernel panic in n64, which I need to > track down - but I think the changes other than pmap.c/pmap64.c are > ready for check in. =A0I would like some feedback on pmap64.c I can > clean it up for check in. I'm uncomfortable with pmap.c and pmap64.c. I don't get the impression that the ifdefs required to do both in the same file are really a great burden, but obviously my efforts are incomplete compared to yours. It seems like there are very few operations that should care about how deep the page tables are and that macros and ifdefed inline functions are the way to go. If you check it in as two files, I'll probably just go through and ifdef the deltas that can't be eliminated. What do you think are the problem areas that justify having two different files? Thanks, Juli.
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