diff options
| -rw-r--r-- | arch/x86/kernel/cpu/mce/amd.c | 73 |
1 files changed, 37 insertions, 36 deletions
diff --git a/arch/x86/kernel/cpu/mce/amd.c b/arch/x86/kernel/cpu/mce/amd.c index d904aafe6409..d4d6e4b7f9dc 100644 --- a/arch/x86/kernel/cpu/mce/amd.c +++ b/arch/x86/kernel/cpu/mce/amd.c @@ -101,11 +101,6 @@ static struct smca_bank_name smca_names[] = { [SMCA_PCIE] = { "pcie", "PCI Express Unit" }, }; -static u32 smca_bank_addrs[MAX_NR_BANKS][NR_BLOCKS] __ro_after_init = -{ - [0 ... MAX_NR_BANKS - 1] = { [0 ... NR_BLOCKS - 1] = -1 } -}; - static const char *smca_get_name(enum smca_bank_types t) { if (t >= N_SMCA_BANK_TYPES) @@ -199,6 +194,9 @@ static char buf_mcatype[MAX_MCATYPE_NAME_LEN]; static DEFINE_PER_CPU(struct threshold_bank **, threshold_banks); static DEFINE_PER_CPU(unsigned int, bank_map); /* see which banks are on */ +/* Map of banks that have more than MCA_MISC0 available. */ +static DEFINE_PER_CPU(u32, smca_misc_banks_map); + static void amd_threshold_interrupt(void); static void amd_deferred_error_interrupt(void); @@ -208,6 +206,28 @@ static void default_deferred_error_interrupt(void) } void (*deferred_error_int_vector)(void) = default_deferred_error_interrupt; +static void smca_set_misc_banks_map(unsigned int bank, unsigned int cpu) +{ + u32 low, high; + + /* + * For SMCA enabled processors, BLKPTR field of the first MISC register + * (MCx_MISC0) indicates presence of additional MISC regs set (MISC1-4). + */ + if (rdmsr_safe(MSR_AMD64_SMCA_MCx_CONFIG(bank), &low, &high)) + return; + + if (!(low & MCI_CONFIG_MCAX)) + return; + + if (rdmsr_safe(MSR_AMD64_SMCA_MCx_MISC(bank), &low, &high)) + return; + + if (low & MASK_BLKPTR_LO) + per_cpu(smca_misc_banks_map, cpu) |= BIT(bank); + +} + static void smca_configure(unsigned int bank, unsigned int cpu) { unsigned int i, hwid_mcatype; @@ -245,6 +265,8 @@ static void smca_configure(unsigned int bank, unsigned int cpu) wrmsr(smca_config, low, high); } + smca_set_misc_banks_map(bank, cpu); + /* Return early if this bank was already initialized. */ if (smca_banks[bank].hwid) return; @@ -455,42 +477,21 @@ static void deferred_error_interrupt_enable(struct cpuinfo_x86 *c) wrmsr(MSR_CU_DEF_ERR, low, high); } -static u32 smca_get_block_address(unsigned int bank, unsigned int block) +static u32 smca_get_block_address(unsigned int bank, unsigned int block, + unsigned int cpu) { - u32 low, high; - u32 addr = 0; - - if (smca_get_bank_type(bank) == SMCA_RESERVED) - return addr; - if (!block) return MSR_AMD64_SMCA_MCx_MISC(bank); - /* Check our cache first: */ - if (smca_bank_addrs[bank][block] != -1) - return smca_bank_addrs[bank][block]; - - /* - * For SMCA enabled processors, BLKPTR field of the first MISC register - * (MCx_MISC0) indicates presence of additional MISC regs set (MISC1-4). - */ - if (rdmsr_safe(MSR_AMD64_SMCA_MCx_CONFIG(bank), &low, &high)) - goto out; - - if (!(low & MCI_CONFIG_MCAX)) - goto out; - - if (!rdmsr_safe(MSR_AMD64_SMCA_MCx_MISC(bank), &low, &high) && - (low & MASK_BLKPTR_LO)) - addr = MSR_AMD64_SMCA_MCx_MISCy(bank, block - 1); + if (!(per_cpu(smca_misc_banks_map, cpu) & BIT(bank))) + return 0; -out: - smca_bank_addrs[bank][block] = addr; - return addr; + return MSR_AMD64_SMCA_MCx_MISCy(bank, block - 1); } static u32 get_block_address(u32 current_addr, u32 low, u32 high, - unsigned int bank, unsigned int block) + unsigned int bank, unsigned int block, + unsigned int cpu) { u32 addr = 0, offset = 0; @@ -498,7 +499,7 @@ static u32 get_block_address(u32 current_addr, u32 low, u32 high, return addr; if (mce_flags.smca) - return smca_get_block_address(bank, block); + return smca_get_block_address(bank, block, cpu); /* Fall back to method we used for older processors: */ switch (block) { @@ -637,7 +638,7 @@ void mce_amd_feature_init(struct cpuinfo_x86 *c) disable_err_thresholding(c, bank); for (block = 0; block < NR_BLOCKS; ++block) { - address = get_block_address(address, low, high, bank, block); + address = get_block_address(address, low, high, bank, block, cpu); if (!address) break; @@ -1254,7 +1255,7 @@ static int allocate_threshold_blocks(unsigned int cpu, unsigned int bank, if (err) goto out_free; recurse: - address = get_block_address(address, low, high, bank, ++block); + address = get_block_address(address, low, high, bank, ++block, cpu); if (!address) return 0; |