linux-kernel - Re: [PATCH 2/2] RAS: Introduce the FRU Memory Poison Manager

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Date: Wed, 14 Feb 2024 19:04:59 +0100
From: Borislav Petkov <bp@...en8.de>
To: Yazen Ghannam <yazen.ghannam@....com>
Cc: tony.luck@...el.com, linux-edac@...r.kernel.org,
	linux-kernel@...r.kernel.org, avadhut.naik@....com,
	john.allen@....com, muralidhara.mk@....com,
	naveenkrishna.chatradhi@....com, sathyapriya.k@....com
Subject: Re: [PATCH 2/2] RAS: Introduce the FRU Memory Poison Manager

On Wed, Feb 14, 2024 at 09:45:14AM -0500, Yazen Ghannam wrote:
> Yes, we keep a local copy of the records within the module. That way
> we just need to update the local copy and write it down to the
> platform. This saves time and avoids interrupting the platform to do
> an extra read.

I guess this:

diff --git a/drivers/ras/amd/fmpm.c b/drivers/ras/amd/fmpm.c
index 901a1f0018fc..99499a37e9d5 100644
--- a/drivers/ras/amd/fmpm.c
+++ b/drivers/ras/amd/fmpm.c
@@ -142,8 +142,9 @@ static unsigned int max_nr_fru;
 static size_t max_rec_len;
 
 /*
- * Protect the local cache and prevent concurrent writes to storage.
- * This is only needed after init once notifier block registration is done.
+ * Protect the local records cache in fru_records and prevent concurrent
+ * writes to storage. This is only needed after init once notifier block
+ * registration is done.
  */
 static DEFINE_MUTEX(fmpm_update_mutex);
 
I'm still don't like the module param...

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette