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Old 04-26-2011, 11:51 AM
Johnny Hughes
Default FYI - pci_mmcfg_init kernel error after upgrading to 5.6

On 04/26/2011 06:27 AM, Leonard den Ottolander wrote:
> Hello Johnny,
> On Mon, 2011-04-25 at 09:26 -0500, Johnny Hughes wrote:
>> On 04/25/2011 08:58 AM, Windsor Dave L. (AdP/TEF7.1) wrote:
>>> There are apparently performance implications due to this issue.
>>> Fortunately, the solution is simple: just boot with the kernel parameter
>>> acpi_mcfg_max_pci_bus_num=on
>> Supposedly this issue is fixed in the 5.6 kernel ... not introduced in it
>> https://bugzilla.redhat.com/show_bug.cgi?id=581933
>> However, the advise is good regardless of version of kernel.
> Not exactly. That kernel parameter *is* the fix.

Yes, I see that now.

Actually, that is a "work around" (IMHO). I don't think it should be
considered a final fix but an interim jury-rig. Of course, that is just
my opinion ... not to be confused with anything important

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