iommu/vt-d: Make DMAR_UNITS_SUPPORTED default 1024
25357900 · Lu Baolu <[email protected]> · 2022-07-12 08:09:08 +08:00
If the available hardware exceeds DMAR_UNITS_SUPPORTED (previously set
to MAX_IO_APICS, or 128), it causes these messages: "DMAR: Failed to
allocate seq_id", "DMAR: Parse DMAR table failure.", and "x2apic: IRQ
remapping doesn't support X2APIC mode x2apic disabled"; and the system
fails to boot properly.
To support up to 64 sockets with 10 DMAR units each (640), make the
value of DMAR_UNITS_SUPPORTED default 1024.
Signed-off-by: Steve Wahl<[email protected]>
Signed-off-by: Lu Baolu <[email protected]>
Reviewed-by: Kevin Tian <[email protected]>
Reviewed-by: Steve Wahl <[email protected]>
Link: https://lore.kernel.org/linux-iommu/[email protected]/
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Joerg Roedel <[email protected]>
- Commit
- 25357900f4e67094dd09b7dcb8a5f47c3f5a159d
- Parents
- bdb46d17
Changes
1 files changed · +1 −5
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index cbd714a..d81a519 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -18,11 +18,7 @@
struct acpi_dmar_header;
-#ifdef CONFIG_X86
-# define DMAR_UNITS_SUPPORTED MAX_IO_APICS
-#else
-# define DMAR_UNITS_SUPPORTED 64
-#endif
+#define DMAR_UNITS_SUPPORTED 1024
/* DMAR Flags */
#define DMAR_INTR_REMAP 0x1