[{"id":3684688,"web_url":"http://patchwork.ozlabs.org/comment/3684688/","msgid":"","list_archive_url":null,"date":"2026-04-30T12:43:19","subject":"RE: [PATCH v4 02/15] iommufd: Extend attach/detach_hwpt callbacks to\n support pasid","submitter":{"id":91580,"url":"http://patchwork.ozlabs.org/api/people/91580/","name":"Shameer Kolothum Thodi","email":"skolothumtho@nvidia.com"},"content":"> -----Original Message-----\n> From: Zhenzhong Duan \n> Sent: 30 April 2026 08:13\n> To: qemu-devel@nongnu.org\n> Cc: alex@shazbot.org; clg@redhat.com; eric.auger@redhat.com;\n> mst@redhat.com; jasowang@redhat.com; Jason Gunthorpe\n> ; Nicolin Chen ; Shameer Kolothum\n> Thodi ; joao.m.martins@oracle.com;\n> clement.mathieu--drif@bull.com; kevin.tian@intel.com; yi.l.liu@intel.com;\n> xudong.hao@intel.com; Zhenzhong Duan ;\n> qemu-arm@nongnu.org\n> Subject: [PATCH v4 02/15] iommufd: Extend attach/detach_hwpt callbacks to\n> support pasid\n> \n> External email: Use caution opening links or attachments\n> \n> \n> Same for the two wrappers and their call sites.\n> \n> Suggested-by: Shameer Kolothum Thodi \n> Suggested-by: Nicolin Chen \n> Signed-off-by: Zhenzhong Duan \n> Reviewed-by: Yi Liu \n> Reviewed-by: Nicolin Chen \n> Reviewed-by: Cédric Le Goater \n> Tested-by: Xudong Hao \n> ---\n> include/system/iommufd.h | 16 +++++++++++-----\n> backends/iommufd.c | 9 +++++----\n> hw/arm/smmuv3-accel.c | 12 ++++++++----\n> hw/i386/intel_iommu_accel.c | 19 ++++++++++---------\n> hw/vfio/iommufd.c | 10 +++++-----\n> 5 files changed, 39 insertions(+), 27 deletions(-)\n> \n> diff --git a/include/system/iommufd.h b/include/system/iommufd.h\n> index 2925d116ac..da98e79439 100644\n> --- a/include/system/iommufd.h\n> +++ b/include/system/iommufd.h\n> @@ -138,14 +138,16 @@ struct HostIOMMUDeviceIOMMUFDClass {\n> *\n> * @hiodi: host IOMMU device backed by IOMMUFD backend.\n> *\n> + * @pasid: target pasid of the device to be attached.\n> + *\n> * @hwpt_id: ID of IOMMUFD hardware page table.\n> *\n> * @errp: pass an Error out when attachment fails.\n> *\n> * Returns: true on success, false on failure.\n> */\n> - bool (*attach_hwpt)(HostIOMMUDeviceIOMMUFD *hiodi, uint32_t\n> hwpt_id,\n> - Error **errp);\n> + bool (*attach_hwpt)(HostIOMMUDeviceIOMMUFD *hiodi, uint32_t pasid,\n> + uint32_t hwpt_id, Error **errp);\n> /**\n> * @detach_hwpt: detach host IOMMU device from IOMMUFD hardware\n> page table.\n> * VFIO and VDPA device can have different implementation.\n> @@ -154,15 +156,19 @@ struct HostIOMMUDeviceIOMMUFDClass {\n> *\n> * @hiodi: host IOMMU device backed by IOMMUFD backend.\n> *\n> + * @pasid: target pasid of the device to be detached.\n> + *\n> * @errp: pass an Error out when attachment fails.\n> *\n\nWe should correct above to \"when detachment fails\"\n\nReviewed-by: Shameer Kolothum \n\nThanks,\nShameer","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=Nvidia.com header.i=@Nvidia.com header.a=rsa-sha256\n header.s=selector2 header.b=iYemM3Xr;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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