Date: Tue, 31 Dec 2013 01:32:36 +0100 From: dt71@gmx.com To: Adrian Chadd <adrian@freebsd.org> Cc: freebsd-current <freebsd-current@freebsd.org>, =?UTF-8?B?SmVhbi1Tw6liYXN0aWVuIFDDqWRyb24=?= <dumbbell@freebsd.org> Subject: Re: new Xorg (KMS, etc.) for Radeon 9600 Message-ID: <52C210A4.8080008@gmx.com> In-Reply-To: <CAJ-VmokrhMB5MGhPKFw70rFbSCy0EtD0ueaUJQs5OhYR0j=wbg@mail.gmail.com> References: <527F95BE.7080908@gmx.com> <Pine.GSO.4.64.1311101135590.9459@sea.ntplx.net> <527FC05D.8080703@gmx.com> <5283E123.5000305@FreeBSD.org> <20131114113846.4dcb2037@kalimero.tijl.coosemans.org> <52858067.2060200@gmx.com> <52AEAD7A.1040205@gmx.com> <52B0C004.9010702@FreeBSD.org> <52B14384.5060102@gmx.com> <CAJ-VmokrhMB5MGhPKFw70rFbSCy0EtD0ueaUJQs5OhYR0j=wbg@mail.gmail.com>
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Adrian Chadd wrote, On 12/30/2013 22:17: > On 17 December 2013 22:41, <dt71@gmx.com> wrote: >> It fixes non-deterministic lockups when the (old, drm1) r300 drivers are >> used. >> >> According to John Baldwin [1]: "The drm code is doing a copyin() while >> holding a mutex (which is not allowed)." The latest version of the patch >> (also the one I used for years) is at [2], linked from [3]. > > Hm. Well, can we add some lock assertions to the dri code to panic > whenever this is done? Oops, I meant panics, not lockups. The kernel panics exactly because -- as I gather -- the assertions are already there. There are lockup issues even with the patch applied (for the most part, only when using, in Xorg.conf: Option "AccelMethod" "EXA").
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