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mce: acpi/apei: Soft-offline a page on firmware GHES notification
If the firmware indicates in GHES error data entry that the error threshold has exceeded for a corrected error event, then we try to soft-offline the page. This could be called in interrupt context, so we queue this up similar to how we handle memory failure scenarios. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Acked-by: Borislav Petkov <bp@suse.de> Signed-off-by: Tony Luck <tony.luck@intel.com>
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parent
9ad95879cd
commit
cf870c70a1
3 changed files with 34 additions and 10 deletions
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@ -409,6 +409,34 @@ static void ghes_clear_estatus(struct ghes *ghes)
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ghes->flags &= ~GHES_TO_CLEAR;
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}
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static void ghes_handle_memory_failure(struct acpi_hest_generic_data *gdata, int sev)
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{
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#ifdef CONFIG_ACPI_APEI_MEMORY_FAILURE
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unsigned long pfn;
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int sec_sev = ghes_severity(gdata->error_severity);
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struct cper_sec_mem_err *mem_err;
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mem_err = (struct cper_sec_mem_err *)(gdata + 1);
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if (sec_sev == GHES_SEV_CORRECTED &&
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(gdata->flags & CPER_SEC_ERROR_THRESHOLD_EXCEEDED) &&
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(mem_err->validation_bits & CPER_MEM_VALID_PHYSICAL_ADDRESS)) {
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pfn = mem_err->physical_addr >> PAGE_SHIFT;
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if (pfn_valid(pfn))
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memory_failure_queue(pfn, 0, MF_SOFT_OFFLINE);
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else if (printk_ratelimit())
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pr_warn(FW_WARN GHES_PFX
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"Invalid address in generic error data: %#llx\n",
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mem_err->physical_addr);
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}
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if (sev == GHES_SEV_RECOVERABLE &&
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sec_sev == GHES_SEV_RECOVERABLE &&
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mem_err->validation_bits & CPER_MEM_VALID_PHYSICAL_ADDRESS) {
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pfn = mem_err->physical_addr >> PAGE_SHIFT;
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memory_failure_queue(pfn, 0, 0);
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}
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#endif
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}
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static void ghes_do_proc(struct ghes *ghes,
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const struct acpi_hest_generic_status *estatus)
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{
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@ -428,15 +456,7 @@ static void ghes_do_proc(struct ghes *ghes,
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apei_mce_report_mem_error(sev == GHES_SEV_CORRECTED,
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mem_err);
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#endif
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#ifdef CONFIG_ACPI_APEI_MEMORY_FAILURE
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if (sev == GHES_SEV_RECOVERABLE &&
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sec_sev == GHES_SEV_RECOVERABLE &&
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mem_err->validation_bits & CPER_MEM_VALID_PHYSICAL_ADDRESS) {
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unsigned long pfn;
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pfn = mem_err->physical_addr >> PAGE_SHIFT;
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memory_failure_queue(pfn, 0, 0);
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}
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#endif
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ghes_handle_memory_failure(gdata, sev);
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}
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#ifdef CONFIG_ACPI_APEI_PCIEAER
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else if (!uuid_le_cmp(*(uuid_le *)gdata->section_type,
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@ -1784,6 +1784,7 @@ enum mf_flags {
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MF_COUNT_INCREASED = 1 << 0,
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MF_ACTION_REQUIRED = 1 << 1,
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MF_MUST_KILL = 1 << 2,
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MF_SOFT_OFFLINE = 1 << 3,
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};
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extern int memory_failure(unsigned long pfn, int trapno, int flags);
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extern void memory_failure_queue(unsigned long pfn, int trapno, int flags);
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@ -1286,7 +1286,10 @@ static void memory_failure_work_func(struct work_struct *work)
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spin_unlock_irqrestore(&mf_cpu->lock, proc_flags);
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if (!gotten)
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break;
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memory_failure(entry.pfn, entry.trapno, entry.flags);
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if (entry.flags & MF_SOFT_OFFLINE)
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soft_offline_page(pfn_to_page(entry.pfn), entry.flags);
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else
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memory_failure(entry.pfn, entry.trapno, entry.flags);
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}
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}
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