Date: Wed, 21 Oct 2015 11:07:31 +0000 From: Alexey Dokuchaev <danfe@FreeBSD.org> To: Jukka Ukkonen <jau789@gmail.com> Cc: Tilman Keskin?z <arved@FreeBSD.org>, freebsd-ppc@FreeBSD.org Subject: Re: radeon/powerpc32 and xorg-server 1.17 Message-ID: <20151021110731.GA86034@FreeBSD.org> In-Reply-To: <E52F5EB6-03C7-4492-9FC6-8FDED61F815C@gmail.com> References: <6771C4FC-D057-4CF3-9D90-AE34323AB8BC@freebsd.org> <20151021100325.GA61714@FreeBSD.org> <E52F5EB6-03C7-4492-9FC6-8FDED61F815C@gmail.com>
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[ Fixed quoting; please don't top post. ] On Wed, Oct 21, 2015 at 01:49:42PM +0300, Jukka Ukkonen wrote: > > On 21 Oct 2015, at 13:03, Alexey Dokuchaev <danfe@FreeBSD.org> wrote: > > I recall that Justin had some progress [1] here, but apparently it was > > not commit-ready so it never hit the tree. > > > > [1] https://lists.freebsd.org/pipermail/freebsd-ppc/2015-August/007728.html > > If my memory serves me, radeon kms driver needs 64 bit atomic > operations which are not available on 32 bit ppc. Right; if you'd follow quoted link Justin talks about exactly that. I actually also need 64-bit atomics (for a different project) and did some initial research as well [2], but haven't sat down for a longer time to actually come up with some implementation. ./danfe [2] https://lists.freebsd.org/pipermail/freebsd-ppc/2015-September/007774.html
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