linux-kernel - [PATCH 2/7] EDAC/skx_common: Prepare for skx_get_edac

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Message-ID: <20251119134132.2389472-3-qiuxu.zhuo@intel.com>
Date: Wed, 19 Nov 2025 21:41:26 +0800
From: Qiuxu Zhuo <qiuxu.zhuo@...el.com>
To: Tony Luck <tony.luck@...el.com>,
	Borislav Petkov <bp@...en8.de>
Cc: Qiuxu Zhuo <qiuxu.zhuo@...el.com>,
	Yi Lai <yi1.lai@...el.com>,
	linux-edac@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/7] EDAC/skx_common: Prepare for skx_get_edac_list()

The Intel EDAC library 'skx_common' maintains the Intel server EDAC device
list for {skx, i10nm}_edac drivers, which use skx_get_all_bus_mappings()
to build and retrieve the EDAC device list.

However, the upcoming Intel EDAC driver, imh_edac, for Diamond Rapids
servers is designed for memory controllers that are MMIO-based devices
rather than PCI devices. Consequently, it can't use
skx_get_all_bus_mappings() due to the absence of a PCI bus. To accommodate
this, prepare skx_get_edac_list() to enable the upcoming imh_edac driver
to obtain the EDAC device list from the skx_common library and build the
EDAC device list independently.

Tested-by: Yi Lai <yi1.lai@...el.com>
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@...el.com>
---
 drivers/edac/skx_common.c | 6 ++++++
 drivers/edac/skx_common.h | 2 ++
 2 files changed, 8 insertions(+)

diff --git a/drivers/edac/skx_common.c b/drivers/edac/skx_common.c
index cf58cb5951ab..6a1b30aa1ee6 100644
--- a/drivers/edac/skx_common.c
+++ b/drivers/edac/skx_common.c
@@ -384,6 +384,12 @@ int skx_get_all_bus_mappings(struct res_config *cfg, struct list_head **list)
 }
 EXPORT_SYMBOL_GPL(skx_get_all_bus_mappings);
 
+struct list_head *skx_get_edac_list(void)
+{
+	return &dev_edac_list;
+}
+EXPORT_SYMBOL_GPL(skx_get_edac_list);
+
 int skx_get_hi_lo(unsigned int did, int off[], u64 *tolm, u64 *tohm)
 {
 	struct pci_dev *pdev;
diff --git a/drivers/edac/skx_common.h b/drivers/edac/skx_common.h
index 0be088f47587..52734091a79d 100644
--- a/drivers/edac/skx_common.h
+++ b/drivers/edac/skx_common.h
@@ -293,6 +293,8 @@ int skx_get_src_id(struct skx_dev *d, int off, u8 *id);
 
 int skx_get_all_bus_mappings(struct res_config *cfg, struct list_head **list);
 
+struct list_head *skx_get_edac_list(void);
+
 int skx_get_hi_lo(unsigned int did, int off[], u64 *tolm, u64 *tohm);
 
 int skx_get_dimm_info(u32 mtr, u32 mcmtr, u32 amap, struct dimm_info *dimm,
-- 
2.43.0