[PATCH v2 1/2] IOMMU: store name for extra reserved device memory

[Marek Marczykowski-Górecki]

It will be useful for error reporting in a subsequent patch.

Signed-off-by: Marek Marczykowski-Górecki <marma...@invisiblethingslab.com>
---
New in v2
---
 xen/drivers/char/xhci-dbc.c     | 3 ++-
 xen/drivers/passthrough/iommu.c | 5 ++++-
 xen/include/xen/iommu.h         | 3 ++-
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/xen/drivers/char/xhci-dbc.c b/xen/drivers/char/xhci-dbc.c
index 3bf389be7d0b..8e2037f1a5f7 100644
--- a/xen/drivers/char/xhci-dbc.c
+++ b/xen/drivers/char/xhci-dbc.c
@@ -1421,7 +1421,8 @@ void __init xhci_dbc_uart_init(void)
         iommu_add_extra_reserved_device_memory(
                 PFN_DOWN(virt_to_maddr(&dbc_dma_bufs)),
                 PFN_UP(sizeof(dbc_dma_bufs)),
-                uart->dbc.sbdf);
+                uart->dbc.sbdf,
+                "XHCI console");
         serial_register_uart(SERHND_XHCI, &dbc_uart_driver, &dbc_uart);
     }
 }
diff --git a/xen/drivers/passthrough/iommu.c b/xen/drivers/passthrough/iommu.c
index 996c31be1284..03587c0cd680 100644
--- a/xen/drivers/passthrough/iommu.c
+++ b/xen/drivers/passthrough/iommu.c
@@ -682,6 +682,7 @@ struct extra_reserved_range {
     unsigned long start;
     unsigned long nr;
     pci_sbdf_t sbdf;
+    const char *name;
 };
 static unsigned int __initdata nr_extra_reserved_ranges;
 static struct extra_reserved_range __initdata
@@ -689,7 +690,8 @@ static struct extra_reserved_range __initdata
 
 int __init iommu_add_extra_reserved_device_memory(unsigned long start,
                                                   unsigned long nr,
-                                                  pci_sbdf_t sbdf)
+                                                  pci_sbdf_t sbdf,
+                                                  const char *name)
 {
     unsigned int idx;
 
@@ -700,6 +702,7 @@ int __init iommu_add_extra_reserved_device_memory(unsigned 
long start,
     extra_reserved_ranges[idx].start = start;
     extra_reserved_ranges[idx].nr = nr;
     extra_reserved_ranges[idx].sbdf = sbdf;
+    extra_reserved_ranges[idx].name = name;
 
     return 0;
 }
diff --git a/xen/include/xen/iommu.h b/xen/include/xen/iommu.h
index 9621459c63ee..b7829dff4588 100644
--- a/xen/include/xen/iommu.h
+++ b/xen/include/xen/iommu.h
@@ -329,7 +329,8 @@ struct iommu_ops {
  */
 extern int iommu_add_extra_reserved_device_memory(unsigned long start,
                                                   unsigned long nr,
-                                                  pci_sbdf_t sbdf);
+                                                  pci_sbdf_t sbdf,
+                                                  const char *name);
 /*
  * To be called by specific IOMMU driver during initialization,
  * to fetch ranges registered with iommu_add_extra_reserved_device_memory().
-- 
2.43.0