iommu, x86: Add cap_pi_support() to detect VT-d PI capability

Add helper function to detect VT-d Posted-Interrupts capability.

Signed-off-by: Feng Wu <[email protected]>
Reviewed-by: Jiang Liu <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Acked-by: David Woodhouse <[email protected]>
Acked-by: Joerg Roedel <[email protected]>
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>

0 files changed, 0 insertions, 0 deletions