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From: Paul Menzel <pmenzel@molgen.mpg.de>
To: "Jörg Rödel" <joro@8bytes.org>
Cc: David Coe <david.coe@live.co.uk>,
	Robert Richter <rrichter@amd.com>,
	Alexander Monakov <amonakov@ispras.ru>,
	iommu@lists.linux-foundation.org,
	Mario Limonciello <mario.limonciello@amd.com>,
	Dell.Client.Kernel@dell.com
Subject: Re: AMD-Vi: [Firmware Warn]: EFR mismatch. Use IVHD EFR (0xf77ef22294ada : 0x400f77ef22294ada).
Date: Wed, 15 Sep 2021 00:17:07 +0200	[thread overview]
Message-ID: <3c61d4d9-f6e0-d847-3b60-bde8b3733f09@molgen.mpg.de> (raw)
In-Reply-To: <38c22e95-aa19-4166-be8a-28749bfacd3e@molgen.mpg.de>

[Use Mario’s current address]

Am 15.09.21 um 00:15 schrieb Paul Menzel:
> [Cc: +Mario from AMD]
> 
> Dear Jörg,
> 
> 
> Am 14.09.21 um 14:09 schrieb Jörg Rödel:
>> On Tue, Sep 14, 2021 at 11:10:57AM +0200, Paul Menzel wrote:
>>> Linux 5.15-rc1 still warns about that (also with latest system firmware
>>> 1.1.50).
>>
>> The reason is most likely that the latest firmware still reports a
>> different EFR feature set in the IVRS table than the IOMMU reports in
>> its EFR MMIO register.
> 
> What do you mean exactly? Only 0x400 is prepended. The rest of the 
> string is identical. What feature set would the 0x400 in the beginning be?
> 
> Anyway, it’d be great if AMD and Dell could take a look.
> 
> 
> Kind regards,
> 
> Paul
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  reply	other threads:[~2021-09-14 22:17 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-12 18:07 AMD-Vi: [Firmware Warn]: EFR mismatch. Use IVHD EFR (0xf77ef22294ada : 0x400f77ef22294ada) Paul Menzel
2021-09-14  9:10 ` Paul Menzel
2021-09-14 12:09   ` Jörg Rödel
2021-09-14 22:15     ` Paul Menzel
2021-09-14 22:17       ` Paul Menzel [this message]
2021-09-15  8:30         ` Jörg Rödel
2021-09-15  8:42           ` Paul Menzel
2021-09-15  8:47             ` Jörg Rödel
2021-09-15 14:39         ` Paul Menzel

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