Hi,
> if ((revision == 0x13) && irq_remapping_enabled) {
> + pr_warn("WARNING WARNING WARNING WARNING WARNING
> WARNING\n"
> + "This system BIOS has enabled interrupt
> remapping\n"
> + "on a chipset that contains an errata making
> that\n"
> + "feature unstable. Please reboot with
> nointremap\n"
> + "added to the kernel command line and contact\n"
> + "your BIOS vendor for an update");
> + }
Forgive me, but ISTR that there's a special BIOS firmware quirk bug annotating
logger warning message mechanism (have I managed to hit all keywords yet? ;)
in the kernel which might be useful in this case.
OK, found something (but I don't think it was the mechanism
that ISTR - perhaps it got modernized?):
include/linux/printk.h:
/*
* FW_BUG
* Add this to a message where you are sure the firmware is buggy or
* behaves
* really stupid or out of spec. Be aware that the responsible BIOS
* developer
* should be able to fix this issue or at least get a concrete idea of
* the
* problem by reading your message without the need of looking at the
* kernel
* code.
*
* Use it for definite and high priority BIOS bugs.
*
* FW_WARN
* Use it for not that clear (e.g. could the kernel messed up things
* already?)
* and medium priority BIOS bugs.
*
* FW_INFO
* Use this one if you want to tell the user or vendor about something
* suspicious, but generally harmless related to the firmware.
*
* Use it for information or very low priority BIOS bugs.
*/
So perhaps it is appropriate to be used here.
HTH,
Andreas Mohr
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