Skip site navigation (1)Skip section navigation (2)
Date:      Fri, 27 Feb 2009 17:30:06 +0300
From:      Sergey G Nasonov <snasonov@bcc.ru>
To:        freebsd-current@freebsd.org
Subject:   Interrupt stom on cardbus device
Message-ID:  <200902271730.07660.snasonov@bcc.ru>

next in thread | raw e-mail | index | archive | help
Hello all,
I have get an issue after recent kernel recompile.
The problem appears after switch from X to text console and back to X11.
After that vmstat -i show an  interrupt storm on cardbus device:

> vmstat -i
interrupt                          total       rate
irq1: atkbd0                        6483          3
irq9: acpi0                         3236          1
irq12: psm0                       347988        167
irq14: ata0                        16431          7
irq16: cbb0 uhci2+              13624982       6556
irq20: uhci0                          14          0
irq22: ehci0                           2          0
cpu0: timer                      4154687       1999
irq256: em0                        53736         25
irq257: hdac0                       5797          2
cpu1: timer                      4153683       1998
irq258: vgapci0                   235585        113
Total                           22602624      10877

I suppose that the issue related with the latest MSI interrupt 
handler changes for intel graphics chipset. My laptop has i965GM.
pciconf -lv:

vgapci0@pci0:0:2:0:     class=0x030000 card=0x20b517aa chip=0x2a028086 
rev=0x0c hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Mobile 965 Express Integrated Graphics Controller'
    class      = display
    subclass   = VGA

When I added my device to drm_msi_blacklist and recompile drm modules the 
problem disappear.
Is it possible to resolve this problem without moving the device to the 
drm_msi_blacklist?
I can test any patches or provide additional detail if it is required.  
Thanks.
-- 
Best Regards,
Nasonov Sergey




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200902271730.07660.snasonov>