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en:pcie:disable-fatal [2019/04/17 04:20]
alex
en:pcie:disable-fatal [2019/04/17 04:21] (current)
alex
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 The device falling off the bus triggers a PCIe fatal error that causes the kernel to panic and the iDRAC to reboot the machine. ​ The iDRAC is totally independent from the operating system; it will still reboot the machine even if the operating system ignores the error.  ​ The device falling off the bus triggers a PCIe fatal error that causes the kernel to panic and the iDRAC to reboot the machine. ​ The iDRAC is totally independent from the operating system; it will still reboot the machine even if the operating system ignores the error.  ​
  
-To work around this crash, PCIe fatal error reporting must be disabled on the switch or root port upstream of the FPGA.  Specifically,​ two bits must be cleared - SERR in the command register, and the fatal error reporting enable bit in the device control register in the PCIe capability. ​ The following script performs these operations on the switch port upstream of the specified PCIe device ID.  ​+To work around this crash, the error must not be reported to the OS or to the iDRAC. ​ To that end, PCIe fatal error reporting must be disabled on the switch or root port upstream of the FPGA.  Specifically,​ two bits must be cleared - SERR in the command register, and the fatal error reporting enable bit in the device control register in the PCIe capability. ​ The following script performs these operations on the switch port upstream of the specified PCIe device ID.  ​
  
 <code sh> <code sh>
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