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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: TgKFQhfrDhcCqyA5K6J3nN0dXcxgawTTRPjNm6IAgCSqOFC4aGqQuZj3soy+QgPxPvrr1ou2Cr6COvKjNIlYrlSMDHYq7EBUrUAl0oa0Z3tTe4xkfNERjxy/E/2PDyuzgj1UL6J9WSXr+aIM5FIO7CvAIHz6MWmidSUSnIzkzGIOQpAuSUUOIiaOD9SeAVfsxH4KZyo45I5ujVi4xzK1BkqflZsDNtI4zalAthhxugudQujbmpzhGjZA0QGiSuhfEHuD+rBf9WwwZAgXuKYDkJ9fHFZ64VDo9MD21EFLMHU4wiytFW6qLeYk5CpaY0EbDZSBBN8wZ6gyV3SSyfEKSZhw5xvYx8HZngdbmgaQcK17xs4n53nRBN2O7/6plIN2V6DXbHlnuTSR0Bz+7NP1qFyQJ6vSFXoeX2fYQBtACIULcK6v/cEgqQmQcNzphz2f X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Sep 2026 18:45:10.7543 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 66bcbd0d-7c26-4bf5-bef7-08df1422a32c X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM2PEPF00003FC4.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR12MB4054 From: Manish Honap A CXL Type-2 device traps its HDM decoder block, so that region needs custom MemoryRegionOps rather than the pass-through default. Split the setup body out and let a caller supply the ops; NULL keeps the existing behaviour. AI-used-for: code (prototype) Signed-off-by: Manish Honap --- hw/vfio/region.c | 27 ++++++++++++++++++++++++--- hw/vfio/vfio-region.h | 3 +++ 2 files changed, 27 insertions(+), 3 deletions(-) diff --git a/hw/vfio/region.c b/hw/vfio/region.c index 54ad11a6c8..21b54978b5 100644 --- a/hw/vfio/region.c +++ b/hw/vfio/region.c @@ -228,8 +228,9 @@ static int vfio_setup_region_sparse_mmaps(VFIORegion *region, return 0; } -int vfio_region_setup(Object *obj, VFIODevice *vbasedev, VFIORegion *region, - int index, const char *name, Error **errp) +static int vfio_region_do_setup(Object *obj, VFIODevice *vbasedev, + VFIORegion *region, int index, const char *name, + const MemoryRegionOps *ops, Error **errp) { struct vfio_region_info *info = NULL; int ret; @@ -249,7 +250,7 @@ int vfio_region_setup(Object *obj, VFIODevice *vbasedev, VFIORegion *region, if (region->size) { region->mem = g_new0(MemoryRegion, 1); - memory_region_init_io(region->mem, obj, &vfio_region_ops, + memory_region_init_io(region->mem, obj, ops, region, name, region->size); if (!vbasedev->no_mmap && @@ -273,6 +274,26 @@ int vfio_region_setup(Object *obj, VFIODevice *vbasedev, VFIORegion *region, return 0; } +int vfio_region_setup(Object *obj, VFIODevice *vbasedev, VFIORegion *region, + int index, const char *name, Error **errp) +{ + return vfio_region_do_setup(obj, vbasedev, region, index, name, + &vfio_region_ops, errp); +} + +/* + * Like vfio_region_setup() but traps the region through @ops instead of the + * default pass-through, so a caller can intercept accesses (the CXL HDM + * decoder block). A NULL @ops keeps the default. + */ +int vfio_region_setup_with_ops(Object *obj, VFIODevice *vbasedev, + VFIORegion *region, int index, const char *name, + const MemoryRegionOps *ops, Error **errp) +{ + return vfio_region_do_setup(obj, vbasedev, region, index, name, + ops ? ops : &vfio_region_ops, errp); +} + static void vfio_subregion_unmap(VFIORegion *region, int index) { trace_vfio_region_unmap(memory_region_name(®ion->mmaps[index].mem), diff --git a/hw/vfio/vfio-region.h b/hw/vfio/vfio-region.h index 58b236f113..8d5699013a 100644 --- a/hw/vfio/vfio-region.h +++ b/hw/vfio/vfio-region.h @@ -39,6 +39,9 @@ uint64_t vfio_region_read(void *opaque, hwaddr addr, unsigned size); int vfio_region_setup(Object *obj, VFIODevice *vbasedev, VFIORegion *region, int index, const char *name, Error **errp); +int vfio_region_setup_with_ops(Object *obj, VFIODevice *vbasedev, + VFIORegion *region, int index, const char *name, + const MemoryRegionOps *ops, Error **errp); int vfio_region_mmap(VFIORegion *region); void vfio_region_mmaps_set_enabled(VFIORegion *region, bool enabled); void vfio_region_exit(VFIORegion *region); -- 2.25.1