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linux-pinenote/drivers/edac/mce_amd.c
Borislav Petkov 50872ccd87 EDAC, MCE, AMD: Correct formatting of decoded text 
Write out MCx_ADDR into the more humanly readable "MCx Error Address"
and remove double colon in the output.

Cc: Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-11-25 13:09:49 +01:00

915 lines
18 KiB
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#include <linux/module.h>
#include <linux/slab.h>
#include "mce_amd.h"
static struct amd_decoder_ops *fam_ops;
static u8 xec_mask = 0xf;
static bool report_gart_errors;
static void (*nb_bus_decoder)(int node_id, struct mce *m);
void amd_report_gart_errors(bool v)
{
report_gart_errors = v;
}
EXPORT_SYMBOL_GPL(amd_report_gart_errors);
void amd_register_ecc_decoder(void (*f)(int, struct mce *))
{
nb_bus_decoder = f;
}
EXPORT_SYMBOL_GPL(amd_register_ecc_decoder);
void amd_unregister_ecc_decoder(void (*f)(int, struct mce *))
{
if (nb_bus_decoder) {
WARN_ON(nb_bus_decoder != f);
nb_bus_decoder = NULL;
}
}
EXPORT_SYMBOL_GPL(amd_unregister_ecc_decoder);
/*
* string representation for the different MCA reported error types, see F3x48
* or MSR0000_0411.
*/
/* transaction type */
static const char * const tt_msgs[] = { "INSN", "DATA", "GEN", "RESV" };
/* cache level */
static const char * const ll_msgs[] = { "RESV", "L1", "L2", "L3/GEN" };
/* memory transaction type */
static const char * const rrrr_msgs[] = {
"GEN", "RD", "WR", "DRD", "DWR", "IRD", "PRF", "EV", "SNP"
};
/* participating processor */
const char * const pp_msgs[] = { "SRC", "RES", "OBS", "GEN" };
EXPORT_SYMBOL_GPL(pp_msgs);
/* request timeout */
static const char * const to_msgs[] = { "no timeout", "timed out" };
/* memory or i/o */
static const char * const ii_msgs[] = { "MEM", "RESV", "IO", "GEN" };
/* internal error type */
static const char * const uu_msgs[] = { "RESV", "RESV", "HWA", "RESV" };
static const char * const f15h_mc1_mce_desc[] = {
"UC during a demand linefill from L2",
"Parity error during data load from IC",
"Parity error for IC valid bit",
"Main tag parity error",
"Parity error in prediction queue",
"PFB data/address parity error",
"Parity error in the branch status reg",
"PFB promotion address error",
"Tag error during probe/victimization",
"Parity error for IC probe tag valid bit",
"PFB non-cacheable bit parity error",
"PFB valid bit parity error", /* xec = 0xd */
"Microcode Patch Buffer", /* xec = 010 */
"uop queue",
"insn buffer",
"predecode buffer",
"fetch address FIFO",
"dispatch uop queue"
};
static const char * const f15h_mc2_mce_desc[] = {
"Fill ECC error on data fills", /* xec = 0x4 */
"Fill parity error on insn fills",
"Prefetcher request FIFO parity error",
"PRQ address parity error",
"PRQ data parity error",
"WCC Tag ECC error",
"WCC Data ECC error",
"WCB Data parity error",
"VB Data ECC or parity error",
"L2 Tag ECC error", /* xec = 0x10 */
"Hard L2 Tag ECC error",
"Multiple hits on L2 tag",
"XAB parity error",
"PRB address parity error"
};
static const char * const mc4_mce_desc[] = {
"DRAM ECC error detected on the NB",
"CRC error detected on HT link",
"Link-defined sync error packets detected on HT link",
"HT Master abort",
"HT Target abort",
"Invalid GART PTE entry during GART table walk",
"Unsupported atomic RMW received from an IO link",
"Watchdog timeout due to lack of progress",
"DRAM ECC error detected on the NB",
"SVM DMA Exclusion Vector error",
"HT data error detected on link",
"Protocol error (link, L3, probe filter)",
"NB internal arrays parity error",
"DRAM addr/ctl signals parity error",
"IO link transmission error",
"L3 data cache ECC error", /* xec = 0x1c */
"L3 cache tag error",
"L3 LRU parity bits error",
"ECC Error in the Probe Filter directory"
};
static const char * const mc5_mce_desc[] = {
"CPU Watchdog timer expire",
"Wakeup array dest tag",
"AG payload array",
"EX payload array",
"IDRF array",
"Retire dispatch queue",
"Mapper checkpoint array",
"Physical register file EX0 port",
"Physical register file EX1 port",
"Physical register file AG0 port",
"Physical register file AG1 port",
"Flag register file",
"DE error occurred",
"Retire status queue"
};
static const char * const mc6_mce_desc[] = {
"Hardware Assertion",
"Free List",
"Physical Register File",
"Retire Queue",
"Scheduler table",
"Status Register File",
};
static bool f12h_mc0_mce(u16 ec, u8 xec)
{
bool ret = false;
if (MEM_ERROR(ec)) {
u8 ll = LL(ec);
ret = true;
if (ll == LL_L2)
pr_cont("during L1 linefill from L2.\n");
else if (ll == LL_L1)
pr_cont("Data/Tag %s error.\n", R4_MSG(ec));
else
ret = false;
}
return ret;
}
static bool f10h_mc0_mce(u16 ec, u8 xec)
{
if (R4(ec) == R4_GEN && LL(ec) == LL_L1) {
pr_cont("during data scrub.\n");
return true;
}
return f12h_mc0_mce(ec, xec);
}
static bool k8_mc0_mce(u16 ec, u8 xec)
{
if (BUS_ERROR(ec)) {
pr_cont("during system linefill.\n");
return true;
}
return f10h_mc0_mce(ec, xec);
}
static bool cat_mc0_mce(u16 ec, u8 xec)
{
u8 r4 = R4(ec);
bool ret = true;
if (MEM_ERROR(ec)) {
if (TT(ec) != TT_DATA || LL(ec) != LL_L1)
return false;
switch (r4) {
case R4_DRD:
case R4_DWR:
pr_cont("Data/Tag parity error due to %s.\n",
(r4 == R4_DRD ? "load/hw prf" : "store"));
break;
case R4_EVICT:
pr_cont("Copyback parity error on a tag miss.\n");
break;
case R4_SNOOP:
pr_cont("Tag parity error during snoop.\n");
break;
default:
ret = false;
}
} else if (BUS_ERROR(ec)) {
if ((II(ec) != II_MEM && II(ec) != II_IO) || LL(ec) != LL_LG)
return false;
pr_cont("System read data error on a ");
switch (r4) {
case R4_RD:
pr_cont("TLB reload.\n");
break;
case R4_DWR:
pr_cont("store.\n");
break;
case R4_DRD:
pr_cont("load.\n");
break;
default:
ret = false;
}
} else {
ret = false;
}
return ret;
}
static bool f15h_mc0_mce(u16 ec, u8 xec)
{
bool ret = true;
if (MEM_ERROR(ec)) {
switch (xec) {
case 0x0:
pr_cont("Data Array access error.\n");
break;
case 0x1:
pr_cont("UC error during a linefill from L2/NB.\n");
break;
case 0x2:
case 0x11:
pr_cont("STQ access error.\n");
break;
case 0x3:
pr_cont("SCB access error.\n");
break;
case 0x10:
pr_cont("Tag error.\n");
break;
case 0x12:
pr_cont("LDQ access error.\n");
break;
default:
ret = false;
}
} else if (BUS_ERROR(ec)) {
if (!xec)
pr_cont("System Read Data Error.\n");
else
pr_cont(" Internal error condition type %d.\n", xec);
} else if (INT_ERROR(ec)) {
if (xec <= 0x1f)
pr_cont("Hardware Assert.\n");
else
ret = false;
} else
ret = false;
return ret;
}
static void decode_mc0_mce(struct mce *m)
{
u16 ec = EC(m->status);
u8 xec = XEC(m->status, xec_mask);
pr_emerg(HW_ERR "MC0 Error: ");
/* TLB error signatures are the same across families */
if (TLB_ERROR(ec)) {
if (TT(ec) == TT_DATA) {
pr_cont("%s TLB %s.\n", LL_MSG(ec),
((xec == 2) ? "locked miss"
: (xec ? "multimatch" : "parity")));
return;
}
} else if (fam_ops->mc0_mce(ec, xec))
;
else
pr_emerg(HW_ERR "Corrupted MC0 MCE info?\n");
}
static bool k8_mc1_mce(u16 ec, u8 xec)
{
u8 ll = LL(ec);
bool ret = true;
if (!MEM_ERROR(ec))
return false;
if (ll == 0x2)
pr_cont("during a linefill from L2.\n");
else if (ll == 0x1) {
switch (R4(ec)) {
case R4_IRD:
pr_cont("Parity error during data load.\n");
break;
case R4_EVICT:
pr_cont("Copyback Parity/Victim error.\n");
break;
case R4_SNOOP:
pr_cont("Tag Snoop error.\n");
break;
default:
ret = false;
break;
}
} else
ret = false;
return ret;
}
static bool cat_mc1_mce(u16 ec, u8 xec)
{
u8 r4 = R4(ec);
bool ret = true;
if (!MEM_ERROR(ec))
return false;
if (TT(ec) != TT_INSTR)
return false;
if (r4 == R4_IRD)
pr_cont("Data/tag array parity error for a tag hit.\n");
else if (r4 == R4_SNOOP)
pr_cont("Tag error during snoop/victimization.\n");
else if (xec == 0x0)
pr_cont("Tag parity error from victim castout.\n");
else if (xec == 0x2)
pr_cont("Microcode patch RAM parity error.\n");
else
ret = false;
return ret;
}
static bool f15h_mc1_mce(u16 ec, u8 xec)
{
bool ret = true;
if (!MEM_ERROR(ec))
return false;
switch (xec) {
case 0x0 ... 0xa:
pr_cont("%s.\n", f15h_mc1_mce_desc[xec]);
break;
case 0xd:
pr_cont("%s.\n", f15h_mc1_mce_desc[xec-2]);
break;
case 0x10:
pr_cont("%s.\n", f15h_mc1_mce_desc[xec-4]);
break;
case 0x11 ... 0x15:
pr_cont("Decoder %s parity error.\n", f15h_mc1_mce_desc[xec-4]);
break;
default:
ret = false;
}
return ret;
}
static void decode_mc1_mce(struct mce *m)
{
u16 ec = EC(m->status);
u8 xec = XEC(m->status, xec_mask);
pr_emerg(HW_ERR "MC1 Error: ");
if (TLB_ERROR(ec))
pr_cont("%s TLB %s.\n", LL_MSG(ec),
(xec ? "multimatch" : "parity error"));
else if (BUS_ERROR(ec)) {
bool k8 = (boot_cpu_data.x86 == 0xf && (m->status & BIT_64(58)));
pr_cont("during %s.\n", (k8 ? "system linefill" : "NB data read"));
} else if (INT_ERROR(ec)) {
if (xec <= 0x3f)
pr_cont("Hardware Assert.\n");
else
goto wrong_mc1_mce;
} else if (fam_ops->mc1_mce(ec, xec))
;
else
goto wrong_mc1_mce;
return;
wrong_mc1_mce:
pr_emerg(HW_ERR "Corrupted MC1 MCE info?\n");
}
static bool k8_mc2_mce(u16 ec, u8 xec)
{
bool ret = true;
if (xec == 0x1)
pr_cont(" in the write data buffers.\n");
else if (xec == 0x3)
pr_cont(" in the victim data buffers.\n");
else if (xec == 0x2 && MEM_ERROR(ec))
pr_cont(": %s error in the L2 cache tags.\n", R4_MSG(ec));
else if (xec == 0x0) {
if (TLB_ERROR(ec))
pr_cont("%s error in a Page Descriptor Cache or Guest TLB.\n",
TT_MSG(ec));
else if (BUS_ERROR(ec))
pr_cont(": %s/ECC error in data read from NB: %s.\n",
R4_MSG(ec), PP_MSG(ec));
else if (MEM_ERROR(ec)) {
u8 r4 = R4(ec);
if (r4 >= 0x7)
pr_cont(": %s error during data copyback.\n",
R4_MSG(ec));
else if (r4 <= 0x1)
pr_cont(": %s parity/ECC error during data "
"access from L2.\n", R4_MSG(ec));
else
ret = false;
} else
ret = false;
} else
ret = false;
return ret;
}
static bool f15h_mc2_mce(u16 ec, u8 xec)
{
bool ret = true;
if (TLB_ERROR(ec)) {
if (xec == 0x0)
pr_cont("Data parity TLB read error.\n");
else if (xec == 0x1)
pr_cont("Poison data provided for TLB fill.\n");
else
ret = false;
} else if (BUS_ERROR(ec)) {
if (xec > 2)
ret = false;
pr_cont("Error during attempted NB data read.\n");
} else if (MEM_ERROR(ec)) {
switch (xec) {
case 0x4 ... 0xc:
pr_cont("%s.\n", f15h_mc2_mce_desc[xec - 0x4]);
break;
case 0x10 ... 0x14:
pr_cont("%s.\n", f15h_mc2_mce_desc[xec - 0x7]);
break;
default:
ret = false;
}
} else if (INT_ERROR(ec)) {
if (xec <= 0x3f)
pr_cont("Hardware Assert.\n");
else
ret = false;
}
return ret;
}
static bool f16h_mc2_mce(u16 ec, u8 xec)
{
u8 r4 = R4(ec);
if (!MEM_ERROR(ec))
return false;
switch (xec) {
case 0x04 ... 0x05:
pr_cont("%cBUFF parity error.\n", (r4 == R4_RD) ? 'I' : 'O');
break;
case 0x09 ... 0x0b:
case 0x0d ... 0x0f:
pr_cont("ECC error in L2 tag (%s).\n",
((r4 == R4_GEN) ? "BankReq" :
((r4 == R4_SNOOP) ? "Prb" : "Fill")));
break;
case 0x10 ... 0x19:
case 0x1b:
pr_cont("ECC error in L2 data array (%s).\n",
(((r4 == R4_RD) && !(xec & 0x3)) ? "Hit" :
((r4 == R4_GEN) ? "Attr" :
((r4 == R4_EVICT) ? "Vict" : "Fill"))));
break;
case 0x1c ... 0x1d:
case 0x1f:
pr_cont("Parity error in L2 attribute bits (%s).\n",
((r4 == R4_RD) ? "Hit" :
((r4 == R4_GEN) ? "Attr" : "Fill")));
break;
default:
return false;
}
return true;
}
static void decode_mc2_mce(struct mce *m)
{
u16 ec = EC(m->status);
u8 xec = XEC(m->status, xec_mask);
pr_emerg(HW_ERR "MC2 Error: ");
if (!fam_ops->mc2_mce(ec, xec))
pr_cont(HW_ERR "Corrupted MC2 MCE info?\n");
}
static void decode_mc3_mce(struct mce *m)
{
u16 ec = EC(m->status);
u8 xec = XEC(m->status, xec_mask);
if (boot_cpu_data.x86 >= 0x14) {
pr_emerg("You shouldn't be seeing MC3 MCE on this cpu family,"
" please report on LKML.\n");
return;
}
pr_emerg(HW_ERR "MC3 Error");
if (xec == 0x0) {
u8 r4 = R4(ec);
if (!BUS_ERROR(ec) || (r4 != R4_DRD && r4 != R4_DWR))
goto wrong_mc3_mce;
pr_cont(" during %s.\n", R4_MSG(ec));
} else
goto wrong_mc3_mce;
return;
wrong_mc3_mce:
pr_emerg(HW_ERR "Corrupted MC3 MCE info?\n");
}
static void decode_mc4_mce(struct mce *m)
{
struct cpuinfo_x86 *c = &boot_cpu_data;
int node_id = amd_get_nb_id(m->extcpu);
u16 ec = EC(m->status);
u8 xec = XEC(m->status, 0x1f);
u8 offset = 0;
pr_emerg(HW_ERR "MC4 Error (node %d): ", node_id);
switch (xec) {
case 0x0 ... 0xe:
/* special handling for DRAM ECCs */
if (xec == 0x0 || xec == 0x8) {
/* no ECCs on F11h */
if (c->x86 == 0x11)
goto wrong_mc4_mce;
pr_cont("%s.\n", mc4_mce_desc[xec]);
if (nb_bus_decoder)
nb_bus_decoder(node_id, m);
return;
}
break;
case 0xf:
if (TLB_ERROR(ec))
pr_cont("GART Table Walk data error.\n");
else if (BUS_ERROR(ec))
pr_cont("DMA Exclusion Vector Table Walk error.\n");
else
goto wrong_mc4_mce;
return;
case 0x19:
if (boot_cpu_data.x86 == 0x15 || boot_cpu_data.x86 == 0x16)
pr_cont("Compute Unit Data Error.\n");
else
goto wrong_mc4_mce;
return;
case 0x1c ... 0x1f:
offset = 13;
break;
default:
goto wrong_mc4_mce;
}
pr_cont("%s.\n", mc4_mce_desc[xec - offset]);
return;
wrong_mc4_mce:
pr_emerg(HW_ERR "Corrupted MC4 MCE info?\n");
}
static void decode_mc5_mce(struct mce *m)
{
struct cpuinfo_x86 *c = &boot_cpu_data;
u16 ec = EC(m->status);
u8 xec = XEC(m->status, xec_mask);
if (c->x86 == 0xf || c->x86 == 0x11)
goto wrong_mc5_mce;
pr_emerg(HW_ERR "MC5 Error: ");
if (INT_ERROR(ec)) {
if (xec <= 0x1f) {
pr_cont("Hardware Assert.\n");
return;
} else
goto wrong_mc5_mce;
}
if (xec == 0x0 || xec == 0xc)
pr_cont("%s.\n", mc5_mce_desc[xec]);
else if (xec <= 0xd)
pr_cont("%s parity error.\n", mc5_mce_desc[xec]);
else
goto wrong_mc5_mce;
return;
wrong_mc5_mce:
pr_emerg(HW_ERR "Corrupted MC5 MCE info?\n");
}
static void decode_mc6_mce(struct mce *m)
{
u8 xec = XEC(m->status, xec_mask);
pr_emerg(HW_ERR "MC6 Error: ");
if (xec > 0x5)
goto wrong_mc6_mce;
pr_cont("%s parity error.\n", mc6_mce_desc[xec]);
return;
wrong_mc6_mce:
pr_emerg(HW_ERR "Corrupted MC6 MCE info?\n");
}
static inline void amd_decode_err_code(u16 ec)
{
if (INT_ERROR(ec)) {
pr_emerg(HW_ERR "internal: %s\n", UU_MSG(ec));
return;
}
pr_emerg(HW_ERR "cache level: %s", LL_MSG(ec));
if (BUS_ERROR(ec))
pr_cont(", mem/io: %s", II_MSG(ec));
else
pr_cont(", tx: %s", TT_MSG(ec));
if (MEM_ERROR(ec) || BUS_ERROR(ec)) {
pr_cont(", mem-tx: %s", R4_MSG(ec));
if (BUS_ERROR(ec))
pr_cont(", part-proc: %s (%s)", PP_MSG(ec), TO_MSG(ec));
}
pr_cont("\n");
}
/*
* Filter out unwanted MCE signatures here.
*/
static bool amd_filter_mce(struct mce *m)
{
u8 xec = (m->status >> 16) & 0x1f;
/*
* NB GART TLB error reporting is disabled by default.
*/
if (m->bank == 4 && xec == 0x5 && !report_gart_errors)
return true;
return false;
}
static const char *decode_error_status(struct mce *m)
{
if (m->status & MCI_STATUS_UC) {
if (m->status & MCI_STATUS_PCC)
return "System Fatal error.";
if (m->mcgstatus & MCG_STATUS_RIPV)
return "Uncorrected, software restartable error.";
return "Uncorrected, software containable error.";
}
if (m->status & MCI_STATUS_DEFERRED)
return "Deferred error.";
return "Corrected error, no action required.";
}
int amd_decode_mce(struct notifier_block *nb, unsigned long val, void *data)
{
struct mce *m = (struct mce *)data;
struct cpuinfo_x86 *c = &cpu_data(m->extcpu);
int ecc;
if (amd_filter_mce(m))
return NOTIFY_STOP;
pr_emerg(HW_ERR "%s\n", decode_error_status(m));
pr_emerg(HW_ERR "CPU:%d (%x:%x:%x) MC%d_STATUS[%s|%s|%s|%s|%s",
m->extcpu,
c->x86, c->x86_model, c->x86_mask,
m->bank,
((m->status & MCI_STATUS_OVER) ? "Over" : "-"),
((m->status & MCI_STATUS_UC) ? "UE" : "CE"),
((m->status & MCI_STATUS_MISCV) ? "MiscV" : "-"),
((m->status & MCI_STATUS_PCC) ? "PCC" : "-"),
((m->status & MCI_STATUS_ADDRV) ? "AddrV" : "-"));
if (c->x86 == 0x15 || c->x86 == 0x16)
pr_cont("|%s|%s",
((m->status & MCI_STATUS_DEFERRED) ? "Deferred" : "-"),
((m->status & MCI_STATUS_POISON) ? "Poison" : "-"));
/* do the two bits[14:13] together */
ecc = (m->status >> 45) & 0x3;
if (ecc)
pr_cont("|%sECC", ((ecc == 2) ? "C" : "U"));
pr_cont("]: 0x%016llx\n", m->status);
if (m->status & MCI_STATUS_ADDRV)
pr_emerg(HW_ERR "MC%d Error Address: 0x%016llx\n", m->bank, m->addr);
if (!fam_ops)
goto err_code;
switch (m->bank) {
case 0:
decode_mc0_mce(m);
break;
case 1:
decode_mc1_mce(m);
break;
case 2:
decode_mc2_mce(m);
break;
case 3:
decode_mc3_mce(m);
break;
case 4:
decode_mc4_mce(m);
break;
case 5:
decode_mc5_mce(m);
break;
case 6:
decode_mc6_mce(m);
break;
default:
break;
}
err_code:
amd_decode_err_code(m->status & 0xffff);
return NOTIFY_STOP;
}
EXPORT_SYMBOL_GPL(amd_decode_mce);
static struct notifier_block amd_mce_dec_nb = {
.notifier_call = amd_decode_mce,
};
static int __init mce_amd_init(void)
{
struct cpuinfo_x86 *c = &boot_cpu_data;
if (c->x86_vendor != X86_VENDOR_AMD)
return -ENODEV;
fam_ops = kzalloc(sizeof(struct amd_decoder_ops), GFP_KERNEL);
if (!fam_ops)
return -ENOMEM;
switch (c->x86) {
case 0xf:
fam_ops->mc0_mce = k8_mc0_mce;
fam_ops->mc1_mce = k8_mc1_mce;
fam_ops->mc2_mce = k8_mc2_mce;
break;
case 0x10:
fam_ops->mc0_mce = f10h_mc0_mce;
fam_ops->mc1_mce = k8_mc1_mce;
fam_ops->mc2_mce = k8_mc2_mce;
break;
case 0x11:
fam_ops->mc0_mce = k8_mc0_mce;
fam_ops->mc1_mce = k8_mc1_mce;
fam_ops->mc2_mce = k8_mc2_mce;
break;
case 0x12:
fam_ops->mc0_mce = f12h_mc0_mce;
fam_ops->mc1_mce = k8_mc1_mce;
fam_ops->mc2_mce = k8_mc2_mce;
break;
case 0x14:
fam_ops->mc0_mce = cat_mc0_mce;
fam_ops->mc1_mce = cat_mc1_mce;
fam_ops->mc2_mce = k8_mc2_mce;
break;
case 0x15:
xec_mask = c->x86_model == 0x60 ? 0x3f : 0x1f;
fam_ops->mc0_mce = f15h_mc0_mce;
fam_ops->mc1_mce = f15h_mc1_mce;
fam_ops->mc2_mce = f15h_mc2_mce;
break;
case 0x16:
xec_mask = 0x1f;
fam_ops->mc0_mce = cat_mc0_mce;
fam_ops->mc1_mce = cat_mc1_mce;
fam_ops->mc2_mce = f16h_mc2_mce;
break;
default:
printk(KERN_WARNING "Huh? What family is it: 0x%x?!\n", c->x86);
kfree(fam_ops);
fam_ops = NULL;
}
pr_info("MCE: In-kernel MCE decoding enabled.\n");
mce_register_decode_chain(&amd_mce_dec_nb);
return 0;
}
early_initcall(mce_amd_init);
#ifdef MODULE
static void __exit mce_amd_exit(void)
{
mce_unregister_decode_chain(&amd_mce_dec_nb);
kfree(fam_ops);
}
MODULE_DESCRIPTION("AMD MCE decoder");
MODULE_ALIAS("edac-mce-amd");
MODULE_LICENSE("GPL");
module_exit(mce_amd_exit);
#endif
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