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x86/MCE/AMD: Define a function to get SMCA bank type 

commit 11cf887728 upstream.

Scalable MCA systems have various types of banks. The bank's type
can determine how we handle errors from it. For example, if a bank
represents a UMC (Unified Memory Controller) then we will need to
convert its address from a normalized address to a system physical
address before handling the error.

[ bp: Verify m->bank is within range and use bank pointer. ]

Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20171207203955.118171-1-Yazen.Ghannam@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/10/head
Yazen Ghannam 2017-12-18 12:37:12 +01:00 committed by Greg Kroah-Hartman
parent 8e52e2f41c
commit 0ed20e4b52
1 changed files with 14 additions and 0 deletions
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14
arch/x86/kernel/cpu/mcheck/mce_amd.c
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@ -110,6 +110,20 @@ const char *smca_get_long_name(enum smca_bank_types t)
}
EXPORT_SYMBOL_GPL(smca_get_long_name);
static enum smca_bank_types smca_get_bank_type(struct mce *m)
{
struct smca_bank *b;
if (m->bank >= N_SMCA_BANK_TYPES)
return N_SMCA_BANK_TYPES;
b = &smca_banks[m->bank];
if (!b->hwid)
return N_SMCA_BANK_TYPES;
return b->hwid->bank_type;
}
static struct smca_hwid smca_hwid_mcatypes[] = {
/* { bank_type, hwid_mcatype, xec_bitmap } */