diff options
Diffstat (limited to 'drivers/acpi/numa/srat.c')
| -rw-r--r-- | drivers/acpi/numa/srat.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/acpi/numa/srat.c b/drivers/acpi/numa/srat.c index 0a725e46d017..53816dfab645 100644 --- a/drivers/acpi/numa/srat.c +++ b/drivers/acpi/numa/srat.c @@ -14,6 +14,7 @@ #include <linux/errno.h> #include <linux/acpi.h> #include <linux/memblock.h> +#include <linux/memory.h> #include <linux/numa.h> #include <linux/nodemask.h> #include <linux/topology.h> @@ -429,13 +430,23 @@ static int __init acpi_parse_cfmws(union acpi_subtable_headers *header, { struct acpi_cedt_cfmws *cfmws; int *fake_pxm = arg; - u64 start, end; + u64 start, end, align; int node; + int err; cfmws = (struct acpi_cedt_cfmws *)header; start = cfmws->base_hpa; end = cfmws->base_hpa + cfmws->window_size; + /* Align memblock size to CFMW regions if possible */ + align = 1UL << __ffs(start | end); + if (align >= SZ_256M) { + err = memory_block_advise_max_size(align); + if (err) + pr_warn("CFMWS: memblock size advise failed (%d)\n", err); + } else + pr_err("CFMWS: [BIOS BUG] base/size alignment violates spec\n"); + /* * The SRAT may have already described NUMA details for all, * or a portion of, this CFMWS HPA range. Extend the memblks @@ -453,7 +464,7 @@ static int __init acpi_parse_cfmws(union acpi_subtable_headers *header, return -EINVAL; } - if (numa_add_memblk(node, start, end) < 0) { + if (numa_add_reserved_memblk(node, start, end) < 0) { /* CXL driver must handle the NUMA_NO_NODE case */ pr_warn("ACPI NUMA: Failed to add memblk for CFMWS node %d [mem %#llx-%#llx]\n", node, start, end); |