Date: Wed, 6 Aug 2014 10:22:31 -0700 From: Garrett Cooper <yaneurabeya@gmail.com> To: =?utf-8?Q?Roger_Pau_Monn=C3=A9?= <royger@FreeBSD.org> Cc: David Mackay <davidm.jx8p@gmail.com>, "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>, Nathan Whitehorn <nwhitehorn@freebsd.org> Subject: Re: r259580 breaks radeonkms Message-ID: <EFA02F2D-E187-4FFC-A908-A3247E604056@gmail.com> In-Reply-To: <53E25D3E.7000200@FreeBSD.org> References: <53E178BC.4040201@freebsd.org> <53E1F6E3.1040304@FreeBSD.org> <5850878054da9ac1898035b6c5d010e5@sonic.net> <53E25D3E.7000200@FreeBSD.org>
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> On Aug 6, 2014, at 9:52, Roger Pau Monn=C3=A9 <royger@FreeBSD.org> wrote: >=20 >> On 06/08/14 16:35, Nathan Whitehorn wrote: >>=20 >>=20 >>> On 2014-08-06 02:35, Roger Pau Monn=C3=A9 wrote: >>>> On 06/08/14 02:37, Nathan Whitehorn wrote: >>>> Kernels with r269580 will panic when loading the radeonkms driver in >>>> pmap_page_set_memattr(). This probably indicates a bug in radeonkms, bu= t >>>> the system is unusable in the meantime. >>>> -Nathan >>>=20 >>> I seem to be able to load radeonkms just fine after r269580: >>=20 >> It's possible that it is related to actually using it, rather than >> loading the module. I was only testing them together. I'm using vt and >> the panic (page fault in kernel mode) occurs when TTM tries to set >> memory attributes on some page while starting X. Before the panic, I see >> all the normal Radeon module messages as you do, so the module seems to >> have actually loaded correctly. The KMS console also seems to be >> functional enough to display the panic message, so I suspect it's X that >> triggers it. >> -Nathan >=20 > Please try the attached patch, it seems to solve the panic for me. It > also includes a fix for Intel i915 gem, which I'm not able to test > because I don't have the hardware. >=20 > Roger. >=20 > <0001-drm-fix-usage-of-vm_phys_fictitious_to_vm_page.patch> David McKay confirmed that the patch worked for them on an intel GEM compati= ble chipset. Cheers! -Garrett=
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