From: Peter Xu <peterx@redhat.com>
To: Kirti Wankhede <kwankhede@nvidia.com>
Cc: cohuck@redhat.com, cjia@nvidia.com, aik@ozlabs.ru,
Zhengxiao.zx@alibaba-inc.com, shuangtai.tst@alibaba-inc.com,
qemu-devel@nongnu.org, eauger@redhat.com, yi.l.liu@intel.com,
quintela@redhat.com, ziye.yang@intel.com, armbru@redhat.com,
mlevitsk@redhat.com, pasic@linux.ibm.com, felipe@nutanix.com,
zhi.a.wang@intel.com, kevin.tian@intel.com, yan.y.zhao@intel.com,
dgilbert@redhat.com, alex.williamson@redhat.com,
changpeng.liu@intel.com, eskultet@redhat.com, Ken.Xue@amd.com,
jonathan.davies@nutanix.com, pbonzini@redhat.com
Subject: Re: [PATCH QEMU v23 11/18] iommu: add callback to get address limit IOMMU supports
Date: Thu, 21 May 2020 12:13:37 -0400 [thread overview]
Message-ID: <20200521161337.GA766834@xz-x1> (raw)
In-Reply-To: <1589999088-31477-12-git-send-email-kwankhede@nvidia.com>
On Wed, May 20, 2020 at 11:54:41PM +0530, Kirti Wankhede wrote:
> +hwaddr memory_region_iommu_get_address_limit(IOMMUMemoryRegion *iommu_mr)
> +{
> + IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
> +
> + if (imrc->get_address_limit) {
> + return imrc->get_address_limit(iommu_mr);
> + }
> +
> + return 0;
LGTM, besides.. Would it be better to return (hwaddr)-1 as default here?
Because if an IOMMU type didn't provide this information, IMHO we'd better
cover the whole possible address range.
Thanks,
> +}
--
Peter Xu
next prev parent reply other threads:[~2020-05-21 16:14 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-20 18:24 [PATCH QEMU v23 00/18] Add migration support for VFIO devices Kirti Wankhede
2020-05-20 18:24 ` [PATCH QEMU v23 01/18] vfio: KABI for migration interface - Kernel header placeholder Kirti Wankhede
2020-05-20 18:24 ` [PATCH QEMU v23 02/18] vfio: Add function to unmap VFIO region Kirti Wankhede
2020-05-20 18:24 ` [PATCH QEMU v23 03/18] vfio: Add vfio_get_object callback to VFIODeviceOps Kirti Wankhede
2020-05-20 18:24 ` [PATCH QEMU v23 04/18] vfio: Add save and load functions for VFIO PCI devices Kirti Wankhede
2020-05-21 9:50 ` Dr. David Alan Gilbert
2020-05-21 12:12 ` Kirti Wankhede
2020-05-21 19:28 ` Dr. David Alan Gilbert
2020-05-20 18:24 ` [PATCH QEMU v23 05/18] vfio: Add migration region initialization and finalize function Kirti Wankhede
2020-05-21 9:59 ` Dr. David Alan Gilbert
2020-05-20 18:24 ` [PATCH QEMU v23 06/18] vfio: Add VM state change handler to know state of VM Kirti Wankhede
2020-05-21 11:19 ` Dr. David Alan Gilbert
2020-05-20 18:24 ` [PATCH QEMU v23 07/18] vfio: Add migration state change notifier Kirti Wankhede
2020-05-21 11:31 ` Dr. David Alan Gilbert
2020-05-20 18:24 ` [PATCH QEMU v23 08/18] vfio: Register SaveVMHandlers for VFIO device Kirti Wankhede
2020-05-21 14:18 ` Dr. David Alan Gilbert
2020-05-21 18:00 ` Kirti Wankhede
2020-05-21 19:35 ` Dr. David Alan Gilbert
2020-05-20 18:24 ` [PATCH QEMU v23 09/18] vfio: Add save state functions to SaveVMHandlers Kirti Wankhede
2020-05-21 15:37 ` Dr. David Alan Gilbert
2020-05-21 20:43 ` Peter Xu
2020-05-20 18:24 ` [PATCH QEMU v23 10/18] vfio: Add load " Kirti Wankhede
2020-05-21 15:53 ` Dr. David Alan Gilbert
2020-05-20 18:24 ` [PATCH QEMU v23 11/18] iommu: add callback to get address limit IOMMU supports Kirti Wankhede
2020-05-21 16:13 ` Peter Xu [this message]
2020-05-20 18:24 ` [PATCH QEMU v23 12/18] memory: Set DIRTY_MEMORY_MIGRATION when IOMMU is enabled Kirti Wankhede
2020-05-21 16:20 ` Dr. David Alan Gilbert
2020-05-20 18:24 ` [PATCH QEMU v23 13/18] vfio: Get migration capability flags for container Kirti Wankhede
2020-05-20 18:24 ` [PATCH QEMU v23 14/18] vfio: Add function to start and stop dirty pages tracking Kirti Wankhede
2020-05-21 16:50 ` Dr. David Alan Gilbert
2020-05-20 18:24 ` [PATCH QEMU v23 15/18] vfio: Add vfio_listener_log_sync to mark dirty pages Kirti Wankhede
2020-05-21 18:52 ` Dr. David Alan Gilbert
2020-05-20 18:24 ` [PATCH QEMU v23 16/18] vfio: Add ioctl to get dirty pages bitmap during dma unmap Kirti Wankhede
2020-05-21 19:05 ` Dr. David Alan Gilbert
2020-05-20 18:24 ` [PATCH QEMU v23 17/18] vfio: Make vfio-pci device migration capable Kirti Wankhede
2020-05-21 19:16 ` Dr. David Alan Gilbert
2020-05-20 18:24 ` [PATCH QEMU v23 18/18] qapi: Add VFIO devices migration stats in Migration stats Kirti Wankhede
2020-05-21 19:23 ` Dr. David Alan Gilbert
2020-05-25 14:34 ` Markus Armbruster
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