iommu/amd: Fix IOMMU AVIC not properly update the is_run bit in IRTE

Commit b9c6ff94e43a ("iommu/amd: Re-factor guest virtual APIC
(de-)activation code") accidentally left out the ir_data pointer when
calling modity_irte_ga(), which causes the function amd_iommu_update_ga()
to return prematurely due to struct amd_ir_data.ref is NULL and
the "is_run" bit of IRTE does not get updated properly.

This results in bad I/O performance since IOMMU AVIC always generate GA Log
entry and notify IOMMU driver and KVM when it receives interrupt from the
PCI pass-through device instead of directly inject interrupt to the vCPU.

Fixes by passing ir_data when calling modify_irte_ga() as done previously.

Fixes: b9c6ff94e43a ("iommu/amd: Re-factor guest virtual APIC (de-)activation code")
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index aac132b..20cce36 100644 (file)
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -3826,7 +3826,7 @@ int amd_iommu_activate_guest_mode(void *data)
        entry->lo.fields_vapic.ga_tag      = ir_data->ga_tag;
 
        return modify_irte_ga(ir_data->irq_2_irte.devid,
-                             ir_data->irq_2_irte.index, entry, NULL);
+                             ir_data->irq_2_irte.index, entry, ir_data);
 }
 EXPORT_SYMBOL(amd_iommu_activate_guest_mode);
 
@@ -3852,7 +3852,7 @@ int amd_iommu_deactivate_guest_mode(void *data)
                                APICID_TO_IRTE_DEST_HI(cfg->dest_apicid);
 
        return modify_irte_ga(ir_data->irq_2_irte.devid,
-                             ir_data->irq_2_irte.index, entry, NULL);
+                             ir_data->irq_2_irte.index, entry, ir_data);
 }
 EXPORT_SYMBOL(amd_iommu_deactivate_guest_mode);