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authorLu Baolu <baolu.lu@linux.intel.com>2022-07-12 03:09:08 +0300
committerJoerg Roedel <jroedel@suse.de>2022-07-15 11:21:43 +0300
commit25357900f4e67094dd09b7dcb8a5f47c3f5a159d (patch)
treed12be87418277e7abe864fdbcb45a76802a1dfe0 /include/linux/dmar.h
parentbdb46d175872af56d3bffe361f21be2b87784039 (diff)
downloadlinux-25357900f4e67094dd09b7dcb8a5f47c3f5a159d.tar.xz
iommu/vt-d: Make DMAR_UNITS_SUPPORTED default 1024
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<steve.wahl@hpe.com> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Steve Wahl <steve.wahl@hpe.com> Link: https://lore.kernel.org/linux-iommu/20220615183650.32075-1-steve.wahl@hpe.com/ Link: https://lore.kernel.org/r/20220702015610.2849494-7-baolu.lu@linux.intel.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/linux/dmar.h')
-rw-r--r--include/linux/dmar.h6
1 files changed, 1 insertions, 5 deletions
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index cbd714a198a0..d81a51978d01 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