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Date: Mon, 18 Jan 2021 04:30:58 +0300 From: WGH <wgh@...lan.ru> To: Yazen Ghannam <Yazen.Ghannam@....com>, linux-edac@...r.kernel.org Cc: linux-kernel@...r.kernel.org, bp@...en8.de, Smita.KoralahalliChannabasappa@....com Subject: Re: [PATCH] EDAC/AMD64: Update scrub register addresses for newer models On 16/01/2021 17:33, Yazen Ghannam wrote: > From: Yazen Ghannam <yazen.ghannam@....com> > > The Family 17h scrubber registers moved to different offset starting > with Model 30h. The new register offsets are used for all currently > available models since then. > > Use the new register addresses as the defaults. > > Set the proper scrub register addresses during module init for older > models. So I tested the patch on my machine (AMD Ryzen 9 3900XT on ASRock B550 Extreme4 motherboard, Linux 5.10.7). The /sys/devices/system/edac/mc/mc0/sdram_scrub_rate value seems to be stuck at 12284069 right after the boot, and does not change. Writes to the file do not report any errors. dmesg: [ 0.549451] EDAC MC: Ver: 3.0.0 [ 0.817576] EDAC amd64: F17h_M70h detected (node 0). [ 0.818159] EDAC amd64: Node 0: DRAM ECC enabled. [ 0.818717] EDAC amd64: MCT channel count: 2 [ 0.819324] EDAC MC0: Giving out device to module amd64_edac controller F17h_M70h: DEV 0000:00:18.3 (INTERRUPT) [ 0.819909] EDAC MC: UMC0 chip selects: [ 0.819910] EDAC amd64: MC: 0: 16384MB 1: 16384MB [ 0.820488] EDAC amd64: MC: 2: 16384MB 3: 16384MB [ 0.821067] EDAC MC: UMC1 chip selects: [ 0.821067] EDAC amd64: MC: 0: 16384MB 1: 16384MB [ 0.821630] EDAC amd64: MC: 2: 16384MB 3: 16384MB [ 0.822187] EDAC amd64: using x16 syndromes. [ 0.822739] EDAC PCI0: Giving out device to module amd64_edac controller EDAC PCI controller: DEV 0000:00:18.0 (POLLED) [ 0.823314] AMD64 EDAC driver v3.5.0
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