[xen master] vtd: Print originating iommu on faults

[patchbot@xxxxxxx]

commit 7a091bd8b04a56afbf8b2a3e7f9a807fc2ba7ce4
Author:     Teddy Astie <teddy.astie@xxxxxxxxxx>
AuthorDate: Wed Aug 5 11:59:31 2026 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Wed Aug 5 11:59:31 2026 +0200

    vtd: Print originating iommu on faults
    
    When a fault occurs on an IOMMU, print the IOMMU the fault is coming from.
    
    Signed-off-by: Teddy Astie <teddy.astie@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/drivers/passthrough/vtd/iommu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/drivers/passthrough/vtd/iommu.c 
b/xen/drivers/passthrough/vtd/iommu.c
index 3d6f787b3c..b41a1d41c8 100644
--- a/xen/drivers/passthrough/vtd/iommu.c
+++ b/xen/drivers/passthrough/vtd/iommu.c
@@ -991,8 +991,8 @@ static int iommu_page_fault_do_one(struct vtd_iommu *iommu, 
int type,
         break;
     }
 
-    printk(XENLOG_G_WARNING VTDPREFIX "%s: reason %02x - %s\n",
-           kind, fault_reason, reason);
+    printk(XENLOG_G_WARNING VTDPREFIX "%s: reason %02x - %s on iommu:%u\n",
+           kind, fault_reason, reason, iommu->index);
 
     if ( iommu_verbose && fault_type == DMA_REMAP )
         print_vtd_entries(iommu, PCI_BUS(source_id), PCI_DEVFN(source_id),
--
generated by git-patchbot for /home/xen/git/xen.git#master