Linux ECC

Goal: Develop an ECC management interface for the Linux kernel. This will include ECC configuration control as well as error reporting. Real ECC support is really, really 100% absolutely required for HA linux systems.

Sure, you can put ECC memory in your machine and forget about it. However, its nice to know:

1) Errors are being detected and corrected properly
2) Which memory modules are experiencing the errors

You can now subscribe to the ECC mailing list.

Releases of the current ECC driver can be found here.

Status

The driver currently reports ECC errors on many Intel, ALI, Via, and SiS chipsets. Software scrubbing (for chipsets which don't implement hardware scrubbing) is incomplete. The module builds against Linux 2.2 and 2.4 kernels, and is being used in production environments for chipsets with hardware scrubbing.

Intel has guidelines for BIOS ECC support here.

Chipsets - AXP Architecture

Manufacturer	Chipset	ECC	Notes

Chipsets - MIPS Architecture

Manufacturer	Chipset	ECC	Notes

Chipsets - PowerPC Architecture

Manufacturer	Chipset	ECC	Notes

Chipsets - x86 Architecture

Manufacturer	Chipset	ECC	Notes
Acer	Aladdin III
Acer	HXPro
Acer	M1531 "Aladdin IV / Aladdin IV+ / TXPro"	Yes
Acer	M1541 "Aladdin 5"	Yes
Acer	M1561 "Aladdin 7"	?
Acer	M1621 "Aladdin-Pro II"	Yes
Acer	M1631 "Aladdin TNT2"	Yes
Acer	M1647 "AliMAgiK1"	No
AMD	AMD-640
AMD	AMD-751	Yes	Athlon chipset
AMD	AMD-761	Yes	Athlon DDR chipset
AMD	AMD-762	Yes	Athlon MP DDR chipset
Eteq	6618
Intel	430LX "Mercury"	No
Intel	430NX "Neptune"	No	Same controller as 430LX
Intel	430FX "Triton I", Errata	No
Intel	430HX "Triton II", Errata	Yes
Intel	430VX "Triton III", Errata	No
Intel	430TX "Triton TX"	No
Intel	440BX "BX AGPset" Errata	Yes
Intel	440EX "EX AGPset"	No
Intel	440FX "Natoma", Errata	Yes	Buggy ECC? (see section 0.6)
Intel	440GX "Xeon"	Yes
Intel	440LX "LX AGPSet"	Yes
Intel	440MX	Yes
Intel	440ZX	Yes
Intel	450GX "Orion" / 450KX "Mars"	Yes
Intel	450NX "Xeon SMP"	Yes
Intel	810	No
Intel	810E	No
Intel	815	No
Intel	815E	No
Intel	815EP	No
Intel	815EM	No
Intel	820	Yes
Intel	820E	Yes
Intel	840	Yes
Intel	845(sdr)	Yes
Intel	845(ddr)	Yes
Intel	845g/gl/gv	No
Intel	850	Yes
Intel	860	Yes
Intel	865g/gv	No
Intel	865p/pe	No
Intel	875p	Yes
Nvidia	"nForce2" 220/420
Nvidia	"nForce3 Pro"
Opti	82C750 "Vendetta"
Opti	82C822
Opti	Discovery
Opti	Viper Xpress+
PCChips	VXPro+	No
PCChips	TXPro II
SiS	530
SiS	540
SiS	600	Yes
SiS	620	No
SiS	630
SiS	5511/5512/5513	No
SiS	5571 "Trinity"	No
SiS	5581/5582
SiS	5591/5595	No
SiS	5596/5513 "Genesis"	No
SiS	5597/5598 "Jedi"	No
SiS	5600	Yes
SiS	5602
SiS	735	No
Serverworks	Serverset III LE	Yes	No documentation
Serverworks	Serverset III HE	Yes	No documentation
Serverworks	Serverset III WS	Yes	No documentation
VIA	570M "Master"
VIA	580VP "Apollo VP-1"	No
VIA	VXPro/VXPro+	No
VIA	580VPX "Apollo VPX/97"	No
VIA	590VP "Apollo VP2"	Yes
VIA	590VP "Apollo VP2/97"	Yes
VIA	597 "Apollo VP3"	Yes
VIA	598 "Apollo MVP3"	Yes
VIA	691 "Apollo MVP4"	Yes	Specification only
VIA	691 "Apollo P6"	Yes	Specification only
VIA	CLE266	No
VIA	KLE133	?
VIA	KM133/A	?
VIA	KM266	?
VIA	KN133	?
VIA	KN266	?
VIA	KT133	No
VIA	KT133A	No
VIA	KT266	Yes
VIA	KT266A	Yes
VIA	KT333	Yes
VIA	KT400	Yes
VIA	KT600	?
VIA	KX133	Yes
VIA	P4M266	?
VIA	P4X266	Yes
VIA	P4X266A	Yes
VIA	P4X333	?
VIA	P4X400	Yes
VIA	PL133T	?
VIA	PLE133	No
VIA	PLE133T	?
VIA	PM133	?
VIA	PN133	?
VIA	PN266T	?
VIA	Pro133A	?	SMP
VIA	Pro133T	?
VIA	Pro266T	?
VLSI	541/543 "Lynx"