From: Yazen Ghannam Date: Mon, 18 Dec 2017 11:37:12 +0000 (+0100) Subject: x86/MCE/AMD: Define a function to get SMCA bank type X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0ed20e4b52afb4a213a51d9bf52b907bfa302f55;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git 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 Signed-off-by: Borislav Petkov Signed-off-by: Thomas Gleixner Link: http://lkml.kernel.org/r/20171207203955.118171-1-Yazen.Ghannam@amd.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/arch/x86/kernel/cpu/mcheck/mce_amd.c b/arch/x86/kernel/cpu/mcheck/mce_amd.c index 486f640b02ef..bd0e1b77937c 100644 --- a/arch/x86/kernel/cpu/mcheck/mce_amd.c +++ b/arch/x86/kernel/cpu/mcheck/mce_amd.c @@ -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 } */