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| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2020-12-07 12:19:20 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-12-11 15:38:00 +0300 |
| commit | 2b8d8c968b495c3a4cb1edb5a43a4bbf9ee9587f (patch) | |
| tree | 74228b52e07fa86d22b6422312ca82eeee16a528 | |
| parent | 469268678716cb45d603b198b3bf78c2c77d61fd (diff) | |
| download | linux-2b8d8c968b495c3a4cb1edb5a43a4bbf9ee9587f.tar.xz | |
iommu/amd: Set DTE[IntTabLen] to represent 512 IRTEs
commit 4165bf015ba9454f45beaad621d16c516d5c5afe upstream.
According to the AMD IOMMU spec, the commit 73db2fc595f3
("iommu/amd: Increase interrupt remapping table limit to 512 entries")
also requires the interrupt table length (IntTabLen) to be set to 9
(power of 2) in the device table mapping entry (DTE).
Fixes: 73db2fc595f3 ("iommu/amd: Increase interrupt remapping table limit to 512 entries")
Reported-by: Jerry Snitselaar <jsnitsel@redhat.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Link: https://lore.kernel.org/r/20201207091920.3052-1-suravee.suthikulpanit@amd.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index bb0448c91f67..f4a15d9f2bbb 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3661,7 +3661,7 @@ static struct irq_chip amd_ir_chip; #define DTE_IRQ_PHYS_ADDR_MASK (((1ULL << 45)-1) << 6) #define DTE_IRQ_REMAP_INTCTL (2ULL << 60) -#define DTE_IRQ_TABLE_LEN (8ULL << 1) +#define DTE_IRQ_TABLE_LEN (9ULL << 1) #define DTE_IRQ_REMAP_ENABLE 1ULL static void set_dte_irq_entry(u16 devid, struct irq_remap_table *table) |