Date: Tue, 14 Jun 2005 00:54:46 +0200 (CEST) From: Sten Spans <sten@blinkenlights.nl> To: Pyun YongHyeon <yongari@rndsoft.co.kr> Cc: Hiroki Sato <hrs@freebsd.org>, sparc64@freebsd.org Subject: Re: E4500 with 24GB RAM Message-ID: <Pine.SOC.4.61.0506140053100.20144@tea.blinkenlights.nl> In-Reply-To: <20050611092015.GE19976@rndsoft.co.kr> References: <20050606132756.X16994@carver.gumbysoft.com> <20050611.004435.59726356.hrs@allbsd.org> <20050610211239.GA59402@xor.obsecurity.org> <20050611.154028.102195481.hrs@allbsd.org> <20050611072632.GB19976@rndsoft.co.kr> <20050611084748.GF742@funkthat.com> <20050611092015.GE19976@rndsoft.co.kr>
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On Sat, 11 Jun 2005, Pyun YongHyeon wrote: > On Sat, Jun 11, 2005 at 01:47:48AM -0700, John-Mark Gurney wrote: > > Pyun YongHyeon wrote this message on Sat, Jun 11, 2005 at 16:26 +0900: > > > I wonder how you can use NFS reliably on sparc64. Due to failure of > > > alignment(both server and client) it's really easy to get panic on sparc64. > > > > I was recently trying to upgrade my sparc64 using a cross-built world, > > and I couldn't get through an installworld with my sparc64 mounted.. > > It kept on panicing.. I plan to take a look at them shortly, but I > > don't think I was using tcp... I do have a few back traces if someone > > wants to look at them... > > > > Long ago I had a local hack that addresses the alignment issue. > Basically it re-inspected whether the mbuf needs realignment in nfsm_disct(). > It was ugly hack and gave performance penalty for architectures that > allow non-aligned memory access. > > Personally I believe we should remove nfs_realign() that fails its mission > and rewrite nfsm_disct to handle alignments as NetBSD did. In this way we > can remove duplicated code, nfs_realign(client and server side), and get > clean/central implementation of nfsm_disct since there is no need to call > nfs_realign. Sounds like a reasonable solution. fyi this problem was also discussed in alpha-context. I'll try doing this in a pr when my cough stops bothering me. -- Sten Spans "There is a crack in everything, that's how the light gets in." Leonard Cohen - Anthem
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