[Bugme-new] [Bug 16553] New: build for i686 - no MSI for devices that supports it
bugzilla-daemon at bugzilla.kernel.org
bugzilla-daemon at bugzilla.kernel.org
Tue Aug 10 05:34:05 PDT 2010
https://bugzilla.kernel.org/show_bug.cgi?id=16553
Summary: build for i686 - no MSI for devices that supports it
Product: Platform Specific/Hardware
Version: 2.5
Kernel Version: 2.6.35
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: i386
AssignedTo: platform_i386 at kernel-bugs.osdl.org
ReportedBy: nitr0 at seti.kr.ua
Regression: Yes
Created an attachment (id=27397)
--> (https://bugzilla.kernel.org/attachment.cgi?id=27397)
faulty kernel config
I updated kernel into router distro - and saw that MSI isn't enabled for
devices that supports it; by default it uses IO-APIC-fasteoi
Here is, for example, listing of /proc/interrupts for test platform
(NForce4-based MB with onboard NIC - that will support MSI):
# cat /proc/interrupts
CPU0
0: 131 IO-APIC-edge timer
1: 274 IO-APIC-edge i8042
6: 2 IO-APIC-edge floppy
7: 1 IO-APIC-edge
8: 1 IO-APIC-edge rtc0
9: 0 IO-APIC-fasteoi acpi
14: 0 IO-APIC-edge pata_amd
15: 0 IO-APIC-edge pata_amd
20: 0 IO-APIC-fasteoi sata_nv
21: 0 IO-APIC-fasteoi sata_nv
22: 895 IO-APIC-fasteoi ehci_hcd:usb2
23: 2139 IO-APIC-fasteoi ohci_hcd:usb1, eth0
NMI: 0 Non-maskable interrupts
LOC: 7694 Local timer interrupts
SPU: 0 Spurious interrupts
PMI: 0 Performance monitoring interrupts
PND: 0 Performance pending work
RES: 0 Rescheduling interrupts
CAL: 0 Function call interrupts
TLB: 0 TLB shootdowns
TRM: 0 Thermal event interrupts
THR: 0 Threshold APIC interrupts
MCE: 0 Machine check exceptions
MCP: 1 Machine check polls
ERR: 1
MIS: 0
On another platform (which have Yukon2 PCI-E card on K8M890 MB) - there is also
no MSI.
MSI in kernel is enabled; I get new config just by 'make oldconfig' with older
2.6.32 config in directory - so differences will be minimal.
For x86_64 build (on other distro) all looks OK. On 2.6.32 kernel that was used
later in this distro - also all is OK.
--
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
More information about the Bugme-new
mailing list