From: "Liu, Yi L" <yi.l.liu@intel.com>
To: Peter Xu <peterx@redhat.com>
Cc: "jean-philippe@linaro.org" <jean-philippe@linaro.org>,
"Tian, Kevin" <kevin.tian@intel.com>,
Jacob Pan <jacob.jun.pan@linux.intel.com>,
Yi Sun <yi.y.sun@linux.intel.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"mst@redhat.com" <mst@redhat.com>,
"Tian, Jun J" <jun.j.tian@intel.com>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"eric.auger@redhat.com" <eric.auger@redhat.com>,
"alex.williamson@redhat.com" <alex.williamson@redhat.com>,
"pbonzini@redhat.com" <pbonzini@redhat.com>,
"Wu, Hao" <hao.wu@intel.com>, "Sun, Yi Y" <yi.y.sun@intel.com>,
"david@gibson.dropbear.id.au" <david@gibson.dropbear.id.au>
Subject: RE: [PATCH v1 04/22] hw/iommu: introduce HostIOMMUContext
Date: Tue, 24 Mar 2020 10:00:59 +0000 [thread overview]
Message-ID: <A2975661238FB949B60364EF0F2C25743A200268@SHSMSX104.ccr.corp.intel.com> (raw)
In-Reply-To: <20200323205849.GO127076@xz-x1>
> From: Peter Xu <peterx@redhat.com>
> Sent: Tuesday, March 24, 2020 4:59 AM
> To: Liu, Yi L <yi.l.liu@intel.com>
> Subject: Re: [PATCH v1 04/22] hw/iommu: introduce HostIOMMUContext
>
> On Sun, Mar 22, 2020 at 05:36:01AM -0700, Liu Yi L wrote:
[...]
> > +
> > +void host_iommu_ctx_init(void *_host_icx, size_t instance_size,
> > + const char *mrtypename,
> > + uint64_t flags)
> > +{
> > + HostIOMMUContext *host_icx;
> > +
> > + object_initialize(_host_icx, instance_size, mrtypename);
> > + host_icx = HOST_IOMMU_CONTEXT(_host_icx);
> > + host_icx->flags = flags;
> > + host_icx->initialized = true;
> > +}
> > +
> > +void host_iommu_ctx_destroy(HostIOMMUContext *host_icx)
> > +{
> > + host_icx->flags = 0x0;
> > + host_icx->initialized = false;
> > +}
>
> Can we simply put this into .instance_finalize() and be called
> automatically when the object loses the last refcount?
>
> Actually an easier way may be dropping this directly.. If the object
> is to be destroyed then IMHO we don't need to care about flags at all,
> we just free memories we use, but for this object it's none.
right, I'll drop this function. :-)
> > +
> > +static void host_icx_init_fn(Object *obj)
> > +{
> > + HostIOMMUContext *host_icx = HOST_IOMMU_CONTEXT(obj);
> > +
> > + host_icx->flags = 0x0;
> > + host_icx->initialized = false;
>
> Here is also a bit strange... IIUC the only way to init this object
> is via host_iommu_ctx_init() where all these flags will be set. But
> if so, then we're setting all these twice always. Maybe this function
> can be dropped too?
yes, it is. At least, it is not necessary for now. Will drop it.
Thanks,
Yi Liu
next prev parent reply other threads:[~2020-03-24 10:02 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-22 12:35 [PATCH v1 00/22] intel_iommu: expose Shared Virtual Addressing to VMs Liu Yi L
2020-03-22 12:35 ` [PATCH v1 01/22] scripts/update-linux-headers: Import iommu.h Liu Yi L
2020-03-22 12:35 ` [PATCH v1 02/22] header file update VFIO/IOMMU vSVA APIs Liu Yi L
2020-03-29 16:32 ` Auger Eric
2020-03-30 7:06 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 03/22] vfio: check VFIO_TYPE1_NESTING_IOMMU support Liu Yi L
2020-03-22 12:36 ` [PATCH v1 04/22] hw/iommu: introduce HostIOMMUContext Liu Yi L
2020-03-23 20:58 ` Peter Xu
2020-03-24 10:00 ` Liu, Yi L [this message]
2020-03-22 12:36 ` [PATCH v1 05/22] hw/pci: modify pci_setup_iommu() to set PCIIOMMUOps Liu Yi L
2020-03-22 12:36 ` [PATCH v1 06/22] hw/pci: introduce pci_device_set/unset_iommu_context() Liu Yi L
2020-03-23 21:15 ` Peter Xu
2020-03-24 10:02 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 07/22] intel_iommu: add set/unset_iommu_context callback Liu Yi L
2020-03-23 21:29 ` Peter Xu
2020-03-24 11:15 ` Liu, Yi L
2020-03-24 15:24 ` Peter Xu
2020-03-25 9:37 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 08/22] vfio: init HostIOMMUContext per-container Liu Yi L
[not found] ` <20200323213943.GR127076@xz-x1>
2020-03-24 13:03 ` Liu, Yi L
2020-03-24 14:45 ` Peter Xu
2020-03-25 9:30 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 09/22] vfio/common: check PASID alloc/free availability Liu Yi L
2020-03-23 22:06 ` Peter Xu
2020-03-24 11:18 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 10/22] intel_iommu: add virtual command capability support Liu Yi L
2020-03-22 12:36 ` [PATCH v1 11/22] intel_iommu: process PASID cache invalidation Liu Yi L
2020-03-22 12:36 ` [PATCH v1 12/22] intel_iommu: add PASID cache management infrastructure Liu Yi L
2020-03-24 17:32 ` Peter Xu
2020-03-25 12:20 ` Liu, Yi L
2020-03-25 14:52 ` Peter Xu
2020-03-26 6:15 ` Liu, Yi L
2020-03-26 13:57 ` Liu, Yi L
2020-03-26 15:53 ` Peter Xu
2020-03-27 1:33 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 13/22] vfio: add bind stage-1 page table support Liu Yi L
2020-03-24 17:41 ` Peter Xu
2020-03-25 9:49 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 14/22] intel_iommu: bind/unbind guest page table to host Liu Yi L
2020-03-24 17:46 ` Peter Xu
2020-03-25 12:42 ` Liu, Yi L
2020-03-25 14:56 ` Peter Xu
2020-03-26 3:04 ` Liu, Yi L
2020-03-25 12:47 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 15/22] intel_iommu: replay guest pasid bindings " Liu Yi L
2020-03-24 18:00 ` Peter Xu
2020-03-25 13:14 ` Liu, Yi L
2020-03-25 15:06 ` Peter Xu
2020-03-26 3:17 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 16/22] intel_iommu: replay pasid binds after context cache invalidation Liu Yi L
2020-03-24 18:07 ` Peter Xu
2020-03-25 13:18 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 17/22] intel_iommu: do not pass down pasid bind for PASID #0 Liu Yi L
2020-03-24 18:13 ` Peter Xu
2020-03-25 10:42 ` Liu, Yi L
2020-03-25 15:12 ` Peter Xu
2020-03-26 2:42 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 18/22] vfio: add support for flush iommu stage-1 cache Liu Yi L
2020-03-24 18:19 ` Peter Xu
2020-03-25 10:40 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 19/22] intel_iommu: process PASID-based iotlb invalidation Liu Yi L
2020-03-24 18:26 ` Peter Xu
2020-03-25 13:36 ` Liu, Yi L
2020-03-25 15:15 ` Peter Xu
2020-03-29 11:17 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 20/22] intel_iommu: propagate PASID-based iotlb invalidation to host Liu Yi L
2020-03-24 18:34 ` Peter Xu
2020-03-25 13:21 ` Liu, Yi L
2020-03-26 5:41 ` Liu, Yi L
2020-03-26 13:02 ` Peter Xu
2020-03-26 13:22 ` Peter Xu
2020-03-26 13:33 ` Liu, Yi L
2020-03-26 13:23 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 21/22] intel_iommu: process PASID-based Device-TLB invalidation Liu Yi L
2020-03-24 18:36 ` Peter Xu
2020-03-25 9:19 ` Liu, Yi L
2020-03-22 12:36 ` [PATCH v1 22/22] intel_iommu: modify x-scalable-mode to be string option Liu Yi L
2020-03-24 18:39 ` Peter Xu
2020-03-25 13:22 ` Liu, Yi L
2020-03-22 13:25 ` [PATCH v1 00/22] intel_iommu: expose Shared Virtual Addressing to VMs no-reply
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