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From: Thorsten Leemhuis <>
Subject: Re: "dma-mapping: remove CONFIG_DMA_REMAP" causes AMD SME boot fail
Date: Thu, 31 Mar 2022 08:51:51 +0200	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <1648659326.eabkokyuym.none@localhost>

[TLDR: I'm adding the regression report below to regzbot, the Linux
kernel regression tracking bot; all text you find below is compiled from
a few templates paragraphs you might have encountered already already
from similar mails.]

Hi, this is your Linux kernel regression tracker. Sending this just to
the lists, as it's already handled.

On 30.03.22 19:51, Alex Xu (Hello71) wrote:
> After a recent kernel update, booting one of my machines causes it to 
> hang on a black screen. Pressing Lock keys on the USB keyboard does not 
> turn on the indicators, and the machine does not appear on the Ethernet 
> network. I don't have a serial port on this machine. I didn't try 
> netconsole, but I suspect it won't work.
> Setting mem_encrypt=0 seems to resolve the issue. Reverting f5ff79fddf0e 
> ("dma-mapping: remove CONFIG_DMA_REMAP") also appears to resolve the 
> issue.
> The machine in question has an AMD Ryzen 5 1600 and ASRock B450 Pro4.

To be sure below issue doesn't fall through the cracks unnoticed, I'm
adding it to regzbot, my Linux kernel regression tracking bot:

#regzbot ^introduced f5ff79fddf0e
#regzbot title dma: "dma-mapping: remove CONFIG_DMA_REMAP" causes AMD
SME boot fail
#regzbot ignore-activity

If it turns out this isn't a regression, free free to remove it from the
tracking by sending a reply to this thread containing a paragraph like
"#regzbot invalid: reason why this is invalid" (without the quotes).

Ciao, Thorsten

  parent reply	other threads:[~2022-03-31  6:52 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1648659326.eabkokyuym.none.ref@localhost>
2022-03-30 17:51 ` "dma-mapping: remove CONFIG_DMA_REMAP" causes AMD SME boot fail Alex Xu (Hello71)
2022-03-30 17:55   ` Christoph Hellwig
2022-03-30 18:01   ` Christoph Hellwig
2022-03-30 19:17     ` Alex Xu (Hello71)
2022-03-31  4:08       ` Christoph Hellwig
2022-03-31  6:51   ` Thorsten Leemhuis [this message]
2022-04-15 17:58     ` "dma-mapping: remove CONFIG_DMA_REMAP" causes AMD SME boot fail #forregzbot Thorsten Leemhuis

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