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VT-d: support the device IOTLB

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Enable the device IOTLB (i.e. ATS) for both the bare metal and KVM
environments.

Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Yu Zhao 2009-05-18 13:51:37 +08:00 • committed by David Woodhouse
parent 9dd2fe8906
commit 93a23a7271
3 changed files with 102 additions and 9 deletions
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1
include/linux/intel-iommu.h
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@ -124,6 +124,7 @@ static inline void dmar_writeq(void __iomem *addr, u64 val)
#define ecap_pass_through(e) ((e >> 6) & 0x1)
#define ecap_eim_support(e) ((e >> 4) & 0x1)
#define ecap_ir_support(e) ((e >> 3) & 0x1)
#define ecap_dev_iotlb_support(e) (((e) >> 2) & 0x1)
#define ecap_max_handle_mask(e) ((e >> 20) & 0xf)
#define ecap_sc_support(e) ((e >> 7) & 0x1) /* Snooping Control */