From: Jason Gunthorpe <jgg@nvidia.com>
To: Shameer Kolothum Thodi <skolothumtho@nvidia.com>
Cc: "eric.auger@redhat.com" <eric.auger@redhat.com>,
"qemu-arm@nongnu.org" <qemu-arm@nongnu.org>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"peter.maydell@linaro.org" <peter.maydell@linaro.org>,
"clg@redhat.com" <clg@redhat.com>,
"alex@shazbot.org" <alex@shazbot.org>,
Nicolin Chen <nicolinc@nvidia.com>,
Nathan Chen <nathanc@nvidia.com>, Matt Ochs <mochs@nvidia.com>,
Jiandi An <jan@nvidia.com>,
"jonathan.cameron@huawei.com" <jonathan.cameron@huawei.com>,
"zhangfei.gao@linaro.org" <zhangfei.gao@linaro.org>,
"zhenzhong.duan@intel.com" <zhenzhong.duan@intel.com>,
Krishnakant Jaju <kjaju@nvidia.com>,
"phrdina@redhat.com" <phrdina@redhat.com>
Subject: Re: [PATCH v3 00/32] hw/arm/virt: Introduce Tegra241 CMDQV support for accelerated SMMUv3
Date: Wed, 11 Mar 2026 17:00:10 -0300 [thread overview]
Message-ID: <20260311200010.GD1448102@nvidia.com> (raw)
In-Reply-To: <CH3PR12MB7548B7D18FA56E6F8EA657C0AB47A@CH3PR12MB7548.namprd12.prod.outlook.com>
On Wed, Mar 11, 2026 at 06:34:38PM +0000, Shameer Kolothum Thodi wrote:
> I do not have a way to suppress that warning currently. It should be
> safe to ignore, similar to the behaviour before the dma-buf support
> series for vfio-pci PCI BAR mappings.
qemu should have the concept of memory regions that are not available
for DMA peer to peer operation - ie are not mapped to the iommu.
Now that the kernel strictly enforces this it is essential qemu itself
keep track if it thinks p2p should work or not.
Jason
next prev parent reply other threads:[~2026-03-11 20:00 UTC|newest]
Thread overview: 93+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-26 10:50 [PATCH v3 00/32] hw/arm/virt: Introduce Tegra241 CMDQV support for accelerated SMMUv3 Shameer Kolothum
2026-02-26 10:50 ` [PATCH v3 01/32] backends/iommufd: Update iommufd_backend_get_device_info Shameer Kolothum
2026-02-26 10:50 ` [PATCH v3 02/32] backends/iommufd: Update iommufd_backend_alloc_viommu to allow user ptr Shameer Kolothum
2026-02-26 10:50 ` [PATCH v3 03/32] backends/iommufd: Introduce iommufd_backend_alloc_hw_queue Shameer Kolothum
2026-02-26 10:50 ` [PATCH v3 04/32] backends/iommufd: Introduce iommufd_backend_viommu_mmap Shameer Kolothum
2026-02-26 10:50 ` [PATCH v3 05/32] hw/arm/smmuv3-accel: Introduce CMDQV ops interface Shameer Kolothum
2026-02-26 10:50 ` [PATCH v3 06/32] hw/arm/tegra241-cmdqv: Add Tegra241 CMDQV ops backend stub Shameer Kolothum
2026-03-09 9:18 ` Eric Auger
2026-03-09 10:48 ` Shameer Kolothum Thodi
2026-03-09 12:52 ` Eric Auger
2026-03-09 12:59 ` Eric Auger
2026-02-26 10:50 ` [PATCH v3 07/32] hw/arm/smmuv3-accel: Wire CMDQV ops into accel lifecycle Shameer Kolothum
2026-03-09 11:05 ` Eric Auger
2026-02-26 10:50 ` [PATCH v3 08/32] hw/arm/virt: Store SMMUv3 device objects in VirtMachineState Shameer Kolothum
2026-02-26 10:50 ` [PATCH v3 09/32] hw/arm/virt-acpi-build: Use stored SMMUv3 devices for IORT build Shameer Kolothum
2026-03-09 10:18 ` Eric Auger
2026-02-26 10:50 ` [PATCH v3 10/32] hw/arm/tegra241-cmdqv: Probe host Tegra241 CMDQV support Shameer Kolothum
2026-03-09 10:31 ` Eric Auger
2026-03-09 10:54 ` Shameer Kolothum Thodi
2026-02-26 10:50 ` [PATCH v3 11/32] hw/arm/tegra241-cmdqv: Implement CMDQV init Shameer Kolothum
2026-03-09 10:44 ` Eric Auger
2026-02-26 10:50 ` [PATCH v3 12/32] hw/arm/virt: Link SMMUv3 CMDQV resources to platform bus Shameer Kolothum
2026-03-09 10:57 ` Eric Auger
2026-02-26 10:50 ` [PATCH v3 13/32] hw/arm/tegra241-cmdqv: Implement CMDQV vIOMMU alloc/free Shameer Kolothum
2026-03-09 11:09 ` Eric Auger
2026-03-09 11:31 ` Shameer Kolothum Thodi
2026-03-09 12:46 ` Eric Auger
2026-03-09 18:09 ` Nicolin Chen
2026-03-09 18:25 ` Shameer Kolothum Thodi
2026-03-09 19:05 ` Nicolin Chen
2026-02-26 10:50 ` [PATCH v3 14/32] hw/arm/tegra241-cmdqv: Emulate global CMDQV registers Shameer Kolothum
2026-03-09 16:33 ` Eric Auger
2026-03-10 11:37 ` Shameer Kolothum Thodi
2026-03-11 10:34 ` Eric Auger
2026-03-09 17:15 ` Eric Auger
2026-03-09 17:56 ` Eric Auger
2026-03-11 7:47 ` Eric Auger
2026-02-26 10:50 ` [PATCH v3 15/32] hw/arm/tegra241-cmdqv: Emulate global and VINTF VCMDQ register reads Shameer Kolothum
2026-02-27 15:58 ` Jonathan Cameron via
2026-02-27 15:58 ` Jonathan Cameron via qemu development
2026-03-09 17:44 ` Eric Auger
2026-03-09 18:04 ` Shameer Kolothum Thodi
2026-03-09 18:40 ` Nicolin Chen
2026-03-09 18:53 ` Shameer Kolothum Thodi
2026-03-09 19:14 ` Nicolin Chen
2026-03-11 9:26 ` Eric Auger
2026-02-26 10:50 ` [PATCH v3 16/32] hw/arm/tegra241-cmdqv: Emulate global and VINTF VCMDQ register writes Shameer Kolothum
2026-03-11 13:32 ` Eric Auger
2026-04-15 13:17 ` Shameer Kolothum Thodi
2026-02-26 10:50 ` [PATCH v3 17/32] hw/arm/tegra241-cmdqv: mmap VINTF Page0 for CMDQV Shameer Kolothum
2026-03-09 17:52 ` Eric Auger
2026-03-11 7:55 ` Eric Auger
2026-03-11 9:26 ` Shameer Kolothum Thodi
2026-03-11 10:05 ` Eric Auger
2026-03-11 12:34 ` Shameer Kolothum Thodi
2026-03-11 13:19 ` Eric Auger
2026-03-11 13:59 ` Shameer Kolothum Thodi
[not found] ` <70cab06d-2114-46b6-ab56-403cbd0003e0@redhat.com>
2026-03-12 18:05 ` Shameer Kolothum Thodi
2026-03-12 21:11 ` Nicolin Chen
2026-03-11 13:43 ` Eric Auger
2026-03-11 13:59 ` Eric Auger
2026-04-13 6:52 ` Shameer Kolothum Thodi
2026-02-26 10:50 ` [PATCH v3 18/32] system/physmem: Add address_space_is_ram() helper Shameer Kolothum
2026-02-26 10:50 ` [PATCH v3 19/32] hw/arm/tegra241-cmdqv: Allocate HW VCMDQs on base register programming Shameer Kolothum
2026-03-11 14:33 ` Eric Auger
2026-04-13 7:40 ` Shameer Kolothum Thodi
2026-02-26 10:50 ` [PATCH v3 20/32] hw/arm/tegra241-cmdqv: Use mmap'ed VINTF page0 as VCMDQ backing Shameer Kolothum
2026-03-11 14:52 ` Eric Auger
2026-03-11 15:43 ` Shameer Kolothum Thodi
2026-02-26 10:50 ` [PATCH v3 21/32] hw/arm/tegra241-cmdqv: Map VINTF page0 into guest MMIO space Shameer Kolothum
2026-02-26 10:50 ` [PATCH v3 22/32] hw/arm/tegra241-cmdqv: Add vEVENTQ allocation and free Shameer Kolothum
2026-03-09 17:24 ` Nicolin Chen
2026-03-09 17:41 ` Shameer Kolothum Thodi
2026-03-09 19:37 ` Nicolin Chen
2026-02-26 10:50 ` [PATCH v3 23/32] hw/arm/smmuv3-accel: Introduce common helper for veventq read Shameer Kolothum
2026-02-26 10:50 ` [PATCH v3 24/32] hw/arm/tegra241-cmdqv: Read and propagate Tegra241 CMDQV errors Shameer Kolothum
2026-02-26 10:50 ` [PATCH v3 25/32] hw/arm/tegra241-cmdqv: Add reset handler Shameer Kolothum
2026-02-26 10:50 ` [PATCH v3 26/32] hw/arm/tegra241-cmdqv: Limit queue size based on backend page size Shameer Kolothum
2026-02-26 10:50 ` [PATCH v3 27/32] tests/qtest/bios-tables-test: Prepare for IORT SMMUv3 node identifier change Shameer Kolothum
2026-03-09 18:06 ` Eric Auger
2026-02-26 10:50 ` [PATCH v3 28/32] hw/arm/smmuv3: Add per-device identifier property Shameer Kolothum
2026-03-09 18:11 ` Eric Auger
2026-03-09 18:22 ` Eric Auger
2026-03-09 18:33 ` Shameer Kolothum Thodi
2026-02-26 10:50 ` [PATCH v3 29/32] tests/qtest/bios-tables-test: Update IORT blobs for SMMUv3 identifier change Shameer Kolothum
2026-02-26 10:50 ` [PATCH v3 30/32] hw/arm/smmuv3-accel: Introduce helper to query CMDQV type Shameer Kolothum
2026-03-09 18:05 ` Eric Auger
2026-02-26 10:50 ` [PATCH v3 31/32] hw/arm/virt-acpi: Advertise Tegra241 CMDQV nodes in DSDT Shameer Kolothum
2026-02-26 10:50 ` [PATCH v3 32/32] hw/arm/smmuv3: Add cmdqv property for SMMUv3 device Shameer Kolothum
2026-03-11 18:24 ` [PATCH v3 00/32] hw/arm/virt: Introduce Tegra241 CMDQV support for accelerated SMMUv3 Eric Auger
2026-03-11 18:34 ` Shameer Kolothum Thodi
2026-03-11 20:00 ` Jason Gunthorpe [this message]
2026-03-13 11:06 ` Shameer Kolothum Thodi
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