Messages in this thread | | | Subject | Re: [PATCH 00/19] Fix Intel IOMMU breakage in kdump kernel | From | David Woodhouse <> | Date | Thu, 25 Jun 2015 09:06:40 +0100 |
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On Thu, 2015-06-25 at 14:35 +0800, Li, ZhenHua wrote: > Hi David, > It is a bad idea to check the DMI match on "HP". Though I have not see > any similar problems on other systems, I believe there are. Also not > all HP systems have such problem.
Yeah, the HP suggestion was a little tongue-in-cheek. Although it does seem to be HP who is the main offender in this area — both the BIOS "value subtract" and the habit of doing utterly insane things with the IOMMU.
> I agree with a blacklist for devices.
Do you have a list of the problematic ones? I think a blacklist *and* an option to enable it for all devices might be the best solution.
-- dwmw2
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