diff options
| -rw-r--r-- | arch/ia64/kernel/mca.c | 8 | ||||
| -rw-r--r-- | arch/ia64/kernel/mca_drv.c | 33 | ||||
| -rw-r--r-- | include/asm-ia64/pal.h | 1 |
3 files changed, 36 insertions, 6 deletions
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c index a76add3e76a2..491687f84fb5 100644 --- a/arch/ia64/kernel/mca.c +++ b/arch/ia64/kernel/mca.c @@ -1192,8 +1192,6 @@ void ia64_mca_handler(struct pt_regs *regs, struct switch_stack *sw, struct ia64_sal_os_state *sos) { - pal_processor_state_info_t *psp = (pal_processor_state_info_t *) - &sos->proc_state_param; int recover, cpu = smp_processor_id(); struct task_struct *previous_current; struct ia64_mca_notify_die nd = @@ -1223,10 +1221,8 @@ ia64_mca_handler(struct pt_regs *regs, struct switch_stack *sw, /* Get the MCA error record and log it */ ia64_mca_log_sal_error_record(SAL_INFO_TYPE_MCA); - /* TLB error is only exist in this SAL error record */ - recover = (psp->tc && !(psp->cc || psp->bc || psp->rc || psp->uc)) - /* other error recovery */ - || (ia64_mca_ucmc_extension + /* MCA error recovery */ + recover = (ia64_mca_ucmc_extension && ia64_mca_ucmc_extension( IA64_LOG_CURR_BUFFER(SAL_INFO_TYPE_MCA), sos)); diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c index afc1403799c9..5e2d18fbce40 100644 --- a/arch/ia64/kernel/mca_drv.c +++ b/arch/ia64/kernel/mca_drv.c @@ -607,6 +607,33 @@ recover_from_platform_error(slidx_table_t *slidx, peidx_table_t *peidx, return status; } +/* + * recover_from_tlb_check + * @peidx: pointer of index of processor error section + * + * Return value: + * 1 on Success / 0 on Failure + */ +static int +recover_from_tlb_check(peidx_table_t *peidx) +{ + sal_log_mod_error_info_t *smei; + pal_tlb_check_info_t *ptci; + + smei = (sal_log_mod_error_info_t *)peidx_tlb_check(peidx, 0); + ptci = (pal_tlb_check_info_t *)&(smei->check_info); + + /* + * Look for signature of a duplicate TLB DTC entry, which is + * a SW bug and always fatal. + */ + if (ptci->op == PAL_TLB_CHECK_OP_PURGE + && !(ptci->itr || ptci->dtc || ptci->itc)) + return fatal_mca("Duplicate TLB entry"); + + return mca_recovered("TLB check recovered"); +} + /** * recover_from_processor_error * @platform: whether there are some platform error section or not @@ -652,6 +679,12 @@ recover_from_processor_error(int platform, slidx_table_t *slidx, return fatal_mca("error not contained"); /* + * Look for recoverable TLB check + */ + if (psp->tc && !(psp->cc || psp->bc || psp->rc || psp->uc)) + return recover_from_tlb_check(peidx); + + /* * The cache check and bus check bits have four possible states * cc bc * 0 0 Weird record, not recovered diff --git a/include/asm-ia64/pal.h b/include/asm-ia64/pal.h index e43021a99a20..67656ce767c2 100644 --- a/include/asm-ia64/pal.h +++ b/include/asm-ia64/pal.h @@ -371,6 +371,7 @@ typedef u64 pal_mc_info_index_t; * dependent */ +#define PAL_TLB_CHECK_OP_PURGE 8 typedef struct pal_process_state_info_s { u64 reserved1 : 2, |