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Subject[PATCH 11/14] amd64_edac: decode instruction cache MCEs
Date
See Fam10h BKDG (31116, rev. 3.28), Table 95.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
---
drivers/edac/amd64_edac.c | 51 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 51 insertions(+), 0 deletions(-)
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index ee13d59..2a810c1 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -2296,6 +2296,53 @@ wrong_dc_mce:
pr_warning("Corrupted DC MCE info?\n");
}

+static void amd64_decode_ic_mce(u64 mc1_status)
+{
+ u32 ec = mc1_status & 0xffff;
+ u32 xec = (mc1_status >> 16) & 0xf;
+
+ pr_emerg(" Instruction Cache Error");
+
+ if (xec == 1 && TLB_ERROR(ec))
+ pr_cont(": %s TLB multimatch.\n", LL(ec));
+ else if (xec == 0) {
+ if (TLB_ERROR(ec))
+ pr_cont(": %s TLB Parity error.\n", LL(ec));
+ else if (BUS_ERROR(ec)) {
+ if (boot_cpu_data.x86 == 0xf &&
+ (mc1_status & (1ULL << 58)))
+ pr_cont(" during system linefill.\n");
+ else
+ pr_cont(" during attempted NB data read.\n");
+ } else if (MEM_ERROR(ec)) {
+ u8 ll = ec & 0x3;
+ u8 rrrr = (ec >> 4) & 0xf;
+
+ if (ll == 0x2)
+ pr_cont(" during a linefill from L2.\n");
+ else if (ll == 0x1) {
+ if (rrrr == 0x5)
+ pr_cont(": Parity error during "
+ "data load.\n");
+ else if (rrrr == 0x7)
+ pr_cont(": Copyback Parity/Victim"
+ " error.\n");
+ else if (rrrr == 0x8)
+ pr_cont(": Tag Snoop error.\n");
+ else
+ goto wrong_ic_mce;
+ }
+ } else
+ goto wrong_ic_mce;
+ } else
+ goto wrong_ic_mce;
+
+ return;
+
+wrong_ic_mce:
+ pr_warning("Corrupted IC MCE info?\n");
+}
+
void amd64_decode_nb_mce(struct mem_ctl_info *mci, struct err_regs *regs,
int handle_errors, int ecc)
{
@@ -2393,6 +2440,10 @@ void decode_mce(struct mce *m)
amd64_decode_dc_mce(m->status);
break;

+ case 1:
+ amd64_decode_ic_mce(m->status);
+ break;
+
case 4:
regs.nbsl = (u32) m->status;
regs.nbsh = (u32)(m->status >> 32);
--
1.6.3.3



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