How to disable interrupt remapping (C series Server) and ESX
Interrupt Remapping is disabled by default in 1.4(3) code and greater.
To disable Interrupt remapping via CIMC:
To disable interrupt remapping on ESXi, perform one of these options:
To set the interrupt mapping via esxcli:
ESXi 5.0 does not provide this parameter as a GUI client configurable option. It can only be changed via esxcli or PowerCLI.
List the present setting:
# esxcli system settings kernel list -o iovDisableIR
The output is similar to:
Name Type Description Configured Runtime Default
------------ ---- --------------------------------------- ---------- ------- -------
iovDisableIR Bool Disable Interrrupt Routing in the IOMMU FALSE FALSE FALSE
Disable interrupt mapping on the host with this command:
# esxcli system settings kernel set --setting=iovDisableIR -v TRUE
Reboot the host after running the command.
To check if interrupt mapping is set after the reboot, run the command
# esxcfg-info –c
iovDisabledIR = TRUE
In vSphere Client:
ESXi 5.0
- Click Configuration > (Software) Advanced Settings > VMKernel.
- Select VMKernel.Boot.iovDisableIR and click OK
- Reboot the ESX host.
References:
