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* User question about memory scrubbing
@ 2020-06-18 16:49 Anders Andersson
  2020-06-18 17:56 ` Borislav Petkov
  0 siblings, 1 reply; 7+ messages in thread
From: Anders Andersson @ 2020-06-18 16:49 UTC (permalink / raw)
  To: linux-edac

Hi! I realize that this is more of a developer-to-developer list, but
I'm a hobbyist who recently bought my first system with ECC RAM
(Opteron 6386 SE) and I can't get memory scrubbing to work. It's hard
to find people who know anything about it.

Preliminary research led me to the EDAC documentation on
https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-devices-edac
and in particular the "sdram_scrub_rate" file, but had no luck
manipulating it.

Before I'm getting too lost: Is that the right way to configure it?

I have amd64_edac_mod and edac_mce_amd loaded. I briefly looked at
amd64_edac.c and it appears to have the necessary code and matches the
documentation from AMD so there's something I'm not doing right. I did
post a more elaborate question on
https://unix.stackexchange.com/questions/593060/how-do-i-enable-and-verify-ecc-ram-scrubbing-in-linux
but I'm afraid it's too technical for most users (too technical for me
too apparently!)

Hints and pointers welcome,
Anders

^ permalink raw reply	[flat|nested] 7+ messages in thread

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Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-06-18 16:49 User question about memory scrubbing Anders Andersson
2020-06-18 17:56 ` Borislav Petkov
2020-06-18 18:40   ` [PATCH] EDAC/amd64: Read back the scrub rate PCI register on F15h Borislav Petkov
2020-06-22 15:13     ` Borislav Petkov
2020-06-23  1:41       ` Anders Andersson
2020-06-23  9:18         ` Borislav Petkov
2020-06-19  1:55   ` User question about memory scrubbing Anders Andersson

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