Commit 0ed20e4b authored Dec 18, 2017 by Yazen Ghannam Committed by Greg Kroah-Hartman Apr 19, 2018

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



commit 11cf887728a3d1de77cc12ce247b64ef32608891 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>

parent 8e52e2f4

arch/x86/kernel/cpu/mcheck/mce_amd.c

+14 −0

Original line number	Diff line number	Diff line
		@@ -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 } */