linux.git/drivers/edac, branch v7.2-rc1

EDAC: Consistently define pci_device_ids using named initializers

2026-05-29T20:28:36+00:00

... and PCI device helpers.

The various struct pci_device_id arrays were initialized mostly by one of the
PCI_DEVICE macros and then list expressions. The latter aren't easily readable
if you're not into PCI. Using named initializers is more explicit and thus
easier to parse.

Also use PCI_DEVICE* helper macros to assign .vendor, .device, .subvendor and
.subdevice where appropriate and skip explicit assignments of 0 (which the
compiler takes care of).

The secret plan is to make struct pci_device_id::driver_data an anonymous
union (similar to

  https://lore.kernel.org/all/cover.1776579304.git.u.kleine-koenig@baylibre.com/

and that requires named initializers. But it's also a nice cleanup on its own.

  [ bp: Massage commit message. ]

Signed-off-by: Uwe Kleine-König (The Capable Hub) 
Signed-off-by: Borislav Petkov (AMD) 
Signed-off-by: Tony Luck 
Reviewed-by: Qiuxu Zhuo 
Tested-by: Qiuxu Zhuo 
Link: https://patch.msgid.link/20260527061057.3796383-2-u.kleine-koenig@baylibre.com

EDAC/igen6: Add Intel Nova Lake-H SoC support

2026-05-29T15:34:13+00:00

Nova Lake-H SoCs share similar memory controller registers and IBECC
(In-Band ECC) registers with Panther Lake-H SoCs but use a new memory
subsystem register for IBECC presence detection.

Add Nova Lake-H SoC compute die IDs and create a new configuration
structure for Nova Lake-H SoCs to enable EDAC support.

Signed-off-by: Qiuxu Zhuo 
Signed-off-by: Tony Luck 
Tested-by: Jie Wang 
Link: https://patch.msgid.link/20260521123812.3961038-3-qiuxu.zhuo@intel.com

EDAC/igen6: Make registers for detecting IBECC configurable

2026-05-29T15:34:12+00:00

Some Intel CPUs with IBECC (In-Band ECC) capability use different registers
to indicate IBECC presence. Make IBECC detection registers CPU-model
specific and configure them properly for scalable IBECC detection.

No functional changes intended.

Signed-off-by: Qiuxu Zhuo 
Signed-off-by: Tony Luck 
Tested-by: Jie Wang 
Link: https://patch.msgid.link/20260521123812.3961038-2-qiuxu.zhuo@intel.com

EDAC/imh: Add RRL support for Intel Diamond Rapids server

2026-05-29T15:34:12+00:00

Compared to previous generations, Diamond Rapids RRL (Retry Read error Log)
operates at DDR sub-channel granularity and adds an extra register per set.
It also increases the CORRERRCNT register width from 4 to 8 bytes while
reducing the number of registers from 8 to 4.

Add the Diamond Rapids RRL register configuration table and enable support.

Signed-off-by: Qiuxu Zhuo 
Signed-off-by: Tony Luck 
Tested-by: Yi Lai 
Link: https://patch.msgid.link/20260521073112.3881223-9-qiuxu.zhuo@intel.com

EDAC/{skx_common,i10nm}: Prepare RRL for sub-channel granularity

2026-05-29T15:34:12+00:00

To prepare for enabling Diamond Rapids server RRL (Retry Read error Log),
which operates at sub-channel granularity by converting struct
res_config::reg_rrl_ddr from a single pointer to an array (reg_rrl_ddr[2])
and updating all users in i10nm_edac and skx_common accordingly.

Initialize only reg_rrl_ddr[0] for existing platforms and prepare for
supporting two RRL set groups per DDR channel (one per sub-channel)
when present.

Signed-off-by: Qiuxu Zhuo 
Signed-off-by: Tony Luck 
Tested-by: Yi Lai 
Link: https://patch.msgid.link/20260521073112.3881223-8-qiuxu.zhuo@intel.com

EDAC/skx_common: Add SubChannel support to ADXL decode

2026-05-29T15:34:12+00:00

Diamond Rapids server RRL (Retry Read error Log) operates at sub-channel
granularity. Add SubChannel support to ADXL decoding in preparation for
enabling this feature.

Also introduce adxl_component_required() to validate mandatory ADXL
components to improve code readability.

Signed-off-by: Qiuxu Zhuo 
Signed-off-by: Tony Luck 
Tested-by: Yi Lai 
Link: https://patch.msgid.link/20260521073112.3881223-7-qiuxu.zhuo@intel.com

EDAC/{skx_common,i10nm}: Move RRL handling to common code

2026-05-29T15:34:12+00:00

Move RRL (Retry Read error Log)  handling from i10nm_edac to skx_common
so it can be shared across EDAC drivers (e.g. imh_edac).

- Move RRL enable/disable and log dumping helpers to skx_common
  to avoid code duplication and enable reuse by other drivers.

- Export skx_enable_rrl() and skx_show_rrl()
  so common RRL handling can be used by i10nm_edac and imh_edac.

No functional change intended.

Signed-off-by: Qiuxu Zhuo 
Signed-off-by: Tony Luck 
Tested-by: Yi Lai 
Link: https://patch.msgid.link/20260521073112.3881223-6-qiuxu.zhuo@intel.com

EDAC/{skx_common,i10nm}: Introduce rrl_ctrl_mode

2026-05-29T15:34:12+00:00

RRL (Retry Read error Log) ownership is currently inferred from
retry_rd_err_log magic values, making control semantics implicit
and harder to understand.

Introduce rrl_ctrl_mode to explicitly describe whether RRL is
controlled by none, BIOS, or Linux, and replace direct checks with
named control states to improve readability and maintainability.

No functional change intended.

Signed-off-by: Qiuxu Zhuo 
Signed-off-by: Tony Luck 
Tested-by: Yi Lai 
Link: https://patch.msgid.link/20260521073112.3881223-5-qiuxu.zhuo@intel.com

EDAC/{skx_common,i10nm}: Rename rrl_mode to rrl_source_type

2026-05-29T15:34:12+00:00

The RRL (Retry Read error Log) values describe where an error was logged
from (first/last read and scrub/demand), not an operating mode.

Rename rrl_mode to rrl_source_type and "modes" to "sources" to better
reflect their meaning and improve code readability.

No functional changes intended.

Signed-off-by: Qiuxu Zhuo 
Signed-off-by: Tony Luck 
Tested-by: Yi Lai 
Link: https://patch.msgid.link/20260521073112.3881223-4-qiuxu.zhuo@intel.com

EDAC/{skx_common,skx,i10nm}: Split skx_set_decode()

2026-05-29T15:34:12+00:00

skx_set_decode() currently handles both address decoding and Retry
Read error Log (RRL) reporting, coupling two independent functions
in a single API. This complicates setup/teardown and forces callers
to update unrelated state.

Introduce skx_set_show_rrl() and keep skx_set_decode() focused on
decode setup, allowing decode and RRL handling to be managed
independently.

Also rename the callback type and variable to skx_show_rrl_f and
show_rrl for clearer RRL terminology and consistency.

No functional changes intended.

Signed-off-by: Qiuxu Zhuo 
Signed-off-by: Tony Luck 
Tested-by: Yi Lai 
Link: https://patch.msgid.link/20260521073112.3881223-3-qiuxu.zhuo@intel.com