From: Paul Mackerras <paulus@ozlabs.org>
To: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: "Alex Williamson" <alex.williamson@redhat.com>,
"Jose Ricardo Ziviani" <joserz@linux.ibm.com>,
"Sam Bobroff" <sbobroff@linux.ibm.com>,
"Alistair Popple" <alistair@popple.id.au>,
"Daniel Henrique Barboza" <danielhb413@gmail.com>,
linuxppc-dev@lists.ozlabs.org, kvm-ppc@vger.kernel.org,
"Piotr Jaroszynski" <pjaroszynski@nvidia.com>,
"Leonardo Augusto Guimarães Garcia" <lagarcia@br.ibm.com>,
"Reza Arbab" <arbab@linux.ibm.com>,
"David Gibson" <david@gibson.dropbear.id.au>
Subject: Re: [PATCH kernel v5 03/20] powerpc/vfio/iommu/kvm: Do not pin device memory
Date: Fri, 14 Dec 2018 14:18:39 +1100 [thread overview]
Message-ID: <20181214031839.GA25474@blackberry> (raw)
In-Reply-To: <20181213061734.16651-4-aik@ozlabs.ru>
On Thu, Dec 13, 2018 at 05:17:17PM +1100, Alexey Kardashevskiy wrote:
> This new memory does not have page structs as it is not plugged to
> the host so gup() will fail anyway.
>
> This adds 2 helpers:
> - mm_iommu_newdev() to preregister the "memory device" memory so
> the rest of API can still be used;
> - mm_iommu_is_devmem() to know if the physical address is one of thise
> new regions which we must avoid unpinning of.
>
> This adds @mm to tce_page_is_contained() and iommu_tce_xchg() to test
> if the memory is device memory to avoid pfn_to_page().
>
> This adds a check for device memory in mm_iommu_ua_mark_dirty_rm() which
> does delayed pages dirtying.
>
> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Paul Mackerras <paulus@ozlabs.org>
next prev parent reply other threads:[~2018-12-14 3:37 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-13 6:17 [PATCH kernel v5 00/20] powerpc/powernv/npu, vfio: NVIDIA V100 + P9 passthrough Alexey Kardashevskiy
2018-12-13 6:17 ` [PATCH kernel v5 01/20] powerpc/ioda/npu: Call skiboot's hot reset hook when disabling NPU2 Alexey Kardashevskiy
2018-12-13 6:17 ` [PATCH kernel v5 02/20] powerpc/mm/iommu/vfio_spapr_tce: Change mm_iommu_get to reference a region Alexey Kardashevskiy
2018-12-13 6:17 ` [PATCH kernel v5 03/20] powerpc/vfio/iommu/kvm: Do not pin device memory Alexey Kardashevskiy
2018-12-14 3:18 ` Paul Mackerras [this message]
2018-12-18 23:33 ` Michael Ellerman
2018-12-13 6:17 ` [PATCH kernel v5 04/20] powerpc/powernv: Move npu struct from pnv_phb to pci_controller Alexey Kardashevskiy
2018-12-13 6:17 ` [PATCH kernel v5 05/20] powerpc/powernv/npu: Move OPAL calls away from context manipulation Alexey Kardashevskiy
2018-12-13 6:17 ` [PATCH kernel v5 06/20] powerpc/pseries/iommu: Use memory@ nodes in max RAM address calculation Alexey Kardashevskiy
2018-12-13 6:17 ` [PATCH kernel v5 07/20] powerpc/pseries/npu: Enable platform support Alexey Kardashevskiy
2018-12-13 6:17 ` [PATCH kernel v5 08/20] powerpc/pseries: Remove IOMMU API support for non-LPAR systems Alexey Kardashevskiy
2018-12-13 6:17 ` [PATCH kernel v5 09/20] powerpc/powernv/pseries: Rework device adding to IOMMU groups Alexey Kardashevskiy
2018-12-13 6:17 ` [PATCH kernel v5 10/20] powerpc/iommu_api: Move IOMMU groups setup to a single place Alexey Kardashevskiy
2018-12-18 23:35 ` Michael Ellerman
2018-12-19 6:17 ` Alexey Kardashevskiy
2018-12-19 9:51 ` Michael Ellerman
2018-12-13 6:17 ` [PATCH kernel v5 11/20] powerpc/powernv: Reference iommu_table while it is linked to a group Alexey Kardashevskiy
2018-12-13 6:17 ` [PATCH kernel v5 12/20] powerpc/powernv/npu: Move single TVE handling to NPU PE Alexey Kardashevskiy
2018-12-13 6:17 ` [PATCH kernel v5 13/20] powerpc/powernv/npu: Convert NPU IOMMU helpers to iommu_table_group_ops Alexey Kardashevskiy
2018-12-13 6:17 ` [PATCH kernel v5 14/20] powerpc/powernv/npu: Add compound IOMMU groups Alexey Kardashevskiy
2018-12-19 0:17 ` Michael Ellerman
2018-12-19 6:54 ` Alexey Kardashevskiy
2018-12-19 10:00 ` Michael Ellerman
2018-12-20 2:18 ` Alexey Kardashevskiy
2018-12-20 5:33 ` Michael Ellerman
2018-12-13 6:17 ` [PATCH kernel v5 15/20] powerpc/powernv/npu: Add release_ownership hook Alexey Kardashevskiy
2018-12-13 6:17 ` [PATCH kernel v5 16/20] powerpc/powernv/npu: Check mmio_atsd array bounds when populating Alexey Kardashevskiy
2018-12-13 6:17 ` [PATCH kernel v5 17/20] powerpc/powernv/npu: Fault user page into the hypervisor's pagetable Alexey Kardashevskiy
2018-12-13 6:17 ` [PATCH kernel v5 18/20] vfio_pci: Allow mapping extra regions Alexey Kardashevskiy
2018-12-13 6:17 ` [PATCH kernel v5 19/20] vfio_pci: Allow regions to add own capabilities Alexey Kardashevskiy
2018-12-13 6:17 ` [PATCH kernel v5 20/20] vfio_pci: Add NVIDIA GV100GL [Tesla V100 SXM2] subdriver Alexey Kardashevskiy
2018-12-18 22:37 ` Alex Williamson
2018-12-19 4:36 ` Alexey Kardashevskiy
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