2017-07-06 02:30:24

by Suthikulpanit, Suravee

Subject: [PATCH] iommu/amd: Enable ga_log_intr when enabling guest_mode

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 <[email protected]>
Cc: Joerg Roedel <[email protected]>
Fixes: d98de49a53e48 ('iommu/amd: Enable vAPIC interrupt remapping mode by default')
---
drivers/iommu/amd_iommu.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 0f1219f..28fbc81 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -4316,6 +4316,7 @@ static int amd_ir_set_vcpu_affinity(struct irq_data *data, void *vcpu_info)
/* 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;

--
1.8.3.1

2017-07-25 13:05:44

by Jörg Rödel

Subject: Re: [PATCH] iommu/amd: Enable ga_log_intr when enabling guest_mode

On Wed, Jul 05, 2017 at 09:29:59PM -0500, Suravee Suthikulpanit wrote:
> drivers/iommu/amd_iommu.c | 1 +
> 1 file changed, 1 insertion(+)

Applied to iommu/fixes, thanks.