4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com>

commit efe6f241602cb61466895f6816b8ea6b90f04d4e upstream.

IRTE[GALogIntr] bit should set when enabling guest_mode, which enables
IOMMU to generate entry in GALog when IRTE[IsRun] is not set, and send
an interrupt to notify IOMMU driver.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com>
Cc: Joerg Roedel <jroe...@suse.de>
Fixes: d98de49a53e48 ('iommu/amd: Enable vAPIC interrupt remapping mode by 
default')
Signed-off-by: Joerg Roedel <jroe...@suse.de>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/iommu/amd_iommu.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -4294,6 +4294,7 @@ static int amd_ir_set_vcpu_affinity(stru
                /* Setting */
                irte->hi.fields.ga_root_ptr = (pi_data->base >> 12);
                irte->hi.fields.vector = vcpu_pi_info->vector;
+               irte->lo.fields_vapic.ga_log_intr = 1;
                irte->lo.fields_vapic.guest_mode = 1;
                irte->lo.fields_vapic.ga_tag = pi_data->ga_tag;
 


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