From: Jane Chu <jane.chu@oracle.com>
Date: Fri, 22 Apr 2022 16:45:02 -0600
Subject: acpi/nfit: rely on mce->misc to determine poison granularity
Patch-mainline: v5.19-rc1
Git-commit: 7917f9cdb5032ac065ac6a5415f5722f215b2608
References: jsc#PED-1408
nfit_handle_mec() hardcode poison granularity at L1_CACHE_BYTES.
Instead, let the driver rely on mce->misc register to determine
the poison granularity.
Suggested-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jane Chu <jane.chu@oracle.com>
Link: https://lore.kernel.org/r/20220422224508.440670-2-jane.chu@oracle.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
---
drivers/acpi/nfit/mce.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/acpi/nfit/mce.c
+++ b/drivers/acpi/nfit/mce.c
@@ -32,6 +32,7 @@ static int nfit_handle_mce(struct notifi
*/
mutex_lock(&acpi_desc_lock);
list_for_each_entry(acpi_desc, &acpi_descs, list) {
+ unsigned int align = 1UL << MCI_MISC_ADDR_LSB(mce->misc);
struct device *dev = acpi_desc->dev;
int found_match = 0;
@@ -63,8 +64,7 @@ static int nfit_handle_mce(struct notifi
/* If this fails due to an -ENOMEM, there is little we can do */
nvdimm_bus_add_badrange(acpi_desc->nvdimm_bus,
- ALIGN(mce->addr, L1_CACHE_BYTES),
- L1_CACHE_BYTES);
+ ALIGN_DOWN(mce->addr, align), align);
nvdimm_region_notify(nfit_spa->nd_region,
NVDIMM_REVALIDATE_POISON);