This patch add a minimal HOWTO for PCIE AER software error injection in Documentation/PCI/pcieaer-howto.txt. Signed-off-by: Huang Ying <ying.huang@xxxxxxxxx> --- Documentation/PCI/pcieaer-howto.txt | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) --- a/Documentation/PCI/pcieaer-howto.txt +++ b/Documentation/PCI/pcieaer-howto.txt @@ -246,3 +246,24 @@ with the PCI Express AER Root driver? A: It could call the helper functions to enable AER in devices and cleanup uncorrectable status register. Pls. refer to section 3.3. + +4. Software error injection + +Debugging PCIE AER error recovery code is quite difficult because it +is hard to trigger real hardware errors. Software based error +injection can be used to fake various kinds of PCIE errors. + +First you should enable PCIE AER software error injection in kernel +configuration, that is, following item should be in your .config. + +CONFIG_PCIEAER_INJECT=y or CONFIG_PCIEAER_INJECT=m + +After reboot with new kernel or insert the module, a device file named +/dev/aer_inject should be created. + +Then, you need a user space tool named aer-inject, which can be gotten +from: + http://www.kernel.org/pub/linux/kernel/people/yhuang/ + +More information about aer-inject can be found in the document comes +with its source code.
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