EDAC, sb_edac: Set fixed DIMM width on Xeon Knights Landing (45f4d3ab) · Commits · 戴 / test

Knights Landing does not come with register that could be used to fetch DIMM width. However the value is fixed for this architecture so it can be hardcoded. Signed-off-by:

Hubert Chrzaniuk <hubert.chrzaniuk@intel.com> Cc: Doug Thompson <dougthompson@xmission.com> Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Cc: linux-edac <linux-edac@vger.kernel.org> Cc: lukasz.anaczkowski@intel.com Link: http://lkml.kernel.org/r/1449840082-18673-1-git-send-email-hubert.chrzaniuk@intel.com Signed-off-by:

Borislav Petkov <bp@suse.de>

drivers/edac/sb_edac.c

+7 −1

Original line number	Diff line number	Diff line
		@@ -924,6 +924,12 @@ out:
		return mtype;
		}

		static enum dev_type knl_get_width(struct sbridge_pvt *pvt, u32 mtr)
		{
		/* for KNL value is fixed */
		return DEV_X16;
		}

		static enum dev_type sbridge_get_width(struct sbridge_pvt *pvt, u32 mtr)
		{
		/* there's no way to figure out */
		@@ -3393,7 +3399,7 @@ static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type)
		pvt->info.interleave_list = knl_interleave_list;
		pvt->info.max_interleave = ARRAY_SIZE(knl_interleave_list);
		pvt->info.interleave_pkg = ibridge_interleave_pkg;
		pvt->info.get_width = ibridge_get_width;
		pvt->info.get_width = knl_get_width;
		mci->ctl_name = kasprintf(GFP_KERNEL,
		"Knights Landing Socket#%d", mci->mc_idx);

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