Skip site navigation (1)Skip section navigation (2)
Date:      Sat, 14 May 2005 21:23:15 -0700 (PDT)
From:      Doug White <dwhite@gumbysoft.com>
To:        Steven Hartland <killing@multiplay.co.uk>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: 5.4-RELEASE amd64: Panic isadma_start : bad bounce buffer
Message-ID:  <20050514212202.R49081@carver.gumbysoft.com>
In-Reply-To: <00c301c55896$986e20a0$b3db87d4@multiplay.co.uk>
References:  <009901c5588f$b242b150$b3db87d4@multiplay.co.uk> <00c301c55896$986e20a0$b3db87d4@multiplay.co.uk>

next in thread | previous in thread | raw e-mail | index | archive | help
On Sat, 14 May 2005, Steven Hartland wrote:

> Thanks for the confirmation there Doug at least I have a workaround :)

As another workaround, add this to loader.conf and reboot:

vm.old_contigmalloc="1"

This uses the old contigmalloc algorithm which may be more successful as
allocating the bounce buffer area.

>
>     Steve
> ----- Original Message -----
> From: "Doug White" <dwhite@gumbysoft.com>
> >
> > This is a known bug; floppy drives don't work on amd64 since the ISA DMA
> > buffer gets allocated above 16MB.  I don't know if this is something that
> > needs to be handled by busdma.
>
>
> ================================================
> This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it.
>
> In the event of misdirection, illegible or incomplete transmission please telephone (023) 8024 3137
> or return the E.mail to postmaster@multiplay.co.uk.
>

-- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite@gumbysoft.com          |  www.FreeBSD.org



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20050514212202.R49081>