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Date: Tue, 12 Jul 2022 08:09:08 +0800 From: Lu Baolu <baolu.lu@...ux.intel.com> To: Joerg Roedel <joro@...tes.org> Cc: iommu@...ts.linux.dev, linux-kernel@...r.kernel.org Subject: [PATCH 25/25] 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@....com> Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com> Reviewed-by: Kevin Tian <kevin.tian@...el.com> Reviewed-by: Steve Wahl <steve.wahl@....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 --- include/linux/dmar.h | 6 +----- 1 file changed, 1 insertion(+), 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 -- 2.25.1
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