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Re: [Xen-devel] Re: ATI radeon fails with "iommu=soft swiotlb=force" (seen on RV730/RV740 and RS780/RS800) . DRM for Radeon 4650 on F11

To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>

From: Boris Derzhavets <bderzhavets@xxxxxxxxx>

Date: Sun, 4 Oct 2009 03:36:09 -0700 (PDT)

Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

Delivery-date: Sun, 04 Oct 2009 03:36:59 -0700

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List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Cannot reproduce issue on F11. Seems to be working OK.
Dmesg log :-

. . . . . . . . . . . . . . .

[drm] Initialized radeon 1.31.0 20080528 for 0000:01:00.0 on minor 0
mtrr: type mismatch for d0000000,10000000 old: write-back new: write-combining
mtrr: type mismatch for d0000000,10000000 old: write-back new: write-combining
mtrr: type mismatch for d0000000,10000000 old: write-back new: write-combining
mtrr: type mismatch for d0000000,10000000 old: write-back new: write-combining
[drm] Setting GART location based on new memory map
[drm] Loading RV730/RV740 PFP Microcode
[drm] Loading RV730/RV740 CP Microcode
[drm] Resetting GPU
[drm] writeback test succeeded in 1 usecs
fuse init (API version 7.12)
CPU0 attaching NULL sched-domain.
CPU1 attaching NULL sched-domain.
CPU0 attaching sched-domain:
domain 0: span 0-1 level CPU
groups: 0 1
CPU1 attaching sched-domain:
domain 0: span 0-1 level CPU
groups: 1 0
eth0: no IPv6 routers present
ALSA sound/pci/hda/hda_intel.c:1179: Too big adjustment 32
hda-intel: IRQ timing workaround is activated for card #1. Suggest a bigger bdl_pos_adj.

--- On Sat, 10/3/09, Boris Derzhavets <bderzhavets@xxxxxxxxx> wrote:

From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
Subject: Re: [Xen-devel] Re: ATI radeon fails with "iommu=soft swiotlb=force" (seen on RV730/RV740 and RS780/RS800) . DRM for Radeon 4650 on F11
To: "Jeremy Fitzhardinge" <jeremy@xxxxxxxx>
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, "Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx>
Date: Saturday, October 3, 2009, 5:26 AM

I've also attempted to activate DRM for Radeon in kernel 2.6.31.1 ( the most recent) under Xen 3.4.1 & Libvirt 0.7.1-8 on top of F11 and lost GDM login at all.
Switching /etc/inittab to initdefault 3 also doesn't allow to login in text mode.
Disabling DRM ( rescue mode kernel rebuild) brings things back to usual behaviour. X-Server just starts , no matter of DRM status ( vs Ubuntu 9.04 Server)

Boris.

--- On Sat, 10/3/09, Boris Derzhavets <bderzhavets@xxxxxxxxx> wrote:

From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
Subject: Re: [Xen-devel] Re: ATI radeon fails with "iommu=soft swiotlb=force" (seen on RV730/RV740 and RS780/RS800) . Test commited for JF
To: "Jeremy Fitzhardinge" <jeremy@xxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx, JBeulich@xxxxxxxxxx, "Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx>
Date: Saturday, October 3, 2009, 3:20 AM

Yes, it works.

root@ServerXen35:~# cat /proc/mtrr
reg00: base=0x0d0000000 ( 3328MB), size= 256MB, count=1: uncachable
reg01: base=0x0e0000000 ( 3584MB), size= 512MB, count=1: uncachable
reg02: base=0x000000000 ( 0MB), size= 8192MB, count=1: write-back
reg03: base=0x200000000 ( 8192MB), size= 512MB, count=1: write-back
reg04: base=0x220000000 ( 8704MB), size= 256MB, count=1: write-back

Boris.

--- On Fri, 10/2/09, Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:

From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Re: ATI radeon fails with "iommu=soft swiotlb=force" (seen on RV730/RV740 and RS780/RS800) . Test commited for JF
To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx, JBeulich@xxxxxxxxxx, "Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx>
Date: Friday, October 2, 2009, 5:07 PM

On 10/02/09 12:50, Boris Derzhavets wrote:
> Done via "git pull" for another close enough "linux-2.6-xen" clone :-
> # git pull
> # git checkout xen/master
> # git log
>

So you're saying it works? I didn't see anything bad in the dmesg output.

If it is working, what does /proc/mtrr say?

Thanks,
J

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