Merge branch 'cxl/for-6.13/dcd-prep' into cxl-for-next

Add preparation patches for coming soon DCD changes.

- Add range_overlaps()
- Add CDAT/DSMAS shared and read only flag in ACPICA
- Add documentation to struct dev_dax_range
- Delay event buffer allocation in CXL PCI
- Use guard() in cxl_dpa_set_mode()
- Refactor common create region code to reduce redudant code

2 files changed, 10 insertions, 0 deletions

diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index 199afc2cd122..387fc821703a 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -403,6 +403,8 @@ struct acpi_cdat_dsmas {
 /* Flags for subtable above */
 
 #define ACPI_CDAT_DSMAS_NON_VOLATILE        (1 << 2)
+#define ACPI_CDAT_DSMAS_SHAREABLE           (1 << 3)
+#define ACPI_CDAT_DSMAS_READ_ONLY           (1 << 6)
 
 /* Subtable 1: Device scoped Latency and Bandwidth Information Structure (DSLBIS) */
 
diff --git a/include/linux/range.h b/include/linux/range.h
index 732c7fdbfd30..d7f98e1285d7 100644
--- a/include/linux/range.h
+++ b/include/linux/range.h
@@ -13,12 +13,20 @@ static inline u64 range_len(const struct range *range)
 	return range->end - range->start + 1;
 }
 
+/* True if r1 completely contains r2 */
 static inline bool range_contains(const struct range *r1,
 				  const struct range *r2)
 {
 	return r1->start <= r2->start && r1->end >= r2->end;
 }
 
+/* True if any part of r1 overlaps r2 */
+static inline bool range_overlaps(const struct range *r1,
+				  const struct range *r2)
+{
+	return r1->start <= r2->end && r1->end >= r2->start;
+}
+
 int add_range(struct range *range, int az, int nr_range,
 		u64 start, u64 end);