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From: Jason Gunthorpe <jgg@ziepe.ca>
To: Christoph Hellwig <hch@infradead.org>
Cc: Jean-Philippe Brucker <jean-philippe@linaro.org>,
	mark.rutland@arm.com, devicetree@vger.kernel.org,
	kevin.tian@intel.com, Dimitri Sivanich <sivanich@sgi.com>,
	Arnd Bergmann <arnd@arndb.de>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-pci@vger.kernel.org, robin.murphy@arm.com,
	linux-mm@kvack.org, iommu@lists.linux-foundation.org,
	robh+dt@kernel.org, catalin.marinas@arm.com,
	zhangfei.gao@linaro.org,
	Andrew Morton <akpm@linux-foundation.org>,
	will@kernel.org, christian.koenig@amd.com,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v4 01/26] mm/mmu_notifiers: pass private data down to alloc_notifier()
Date: Tue, 17 Mar 2020 15:40:39 -0300	[thread overview]
Message-ID: <20200317184039.GV20941@ziepe.ca> (raw)
In-Reply-To: <20200316154659.GA18704@infradead.org>

On Mon, Mar 16, 2020 at 08:46:59AM -0700, Christoph Hellwig wrote:
> On Fri, Mar 06, 2020 at 09:09:19AM -0400, Jason Gunthorpe wrote:
> > This is why release must do invalidate all - but it doesn't need to do
> > any more - as no SPTE can be established without a mmget() - and
> > mmget() is no longer possible past release.
> 
> Maybe we should rename the release method to invalidate_all?

It is a better name. The function it must also fence future access if
the mirror is not using mmget(), and stop using the pgd/etc pointer if
the page tables are accessed directly.

Jason

  reply	other threads:[~2020-03-17 18:40 UTC|newest]

Thread overview: 70+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-24 18:23 [PATCH v4 00/26] iommu: Shared Virtual Addressing and SMMUv3 support Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 01/26] mm/mmu_notifiers: pass private data down to alloc_notifier() Jean-Philippe Brucker
2020-02-24 19:00   ` Jason Gunthorpe
2020-02-25  9:24     ` Jean-Philippe Brucker
2020-02-25 14:08       ` Jason Gunthorpe
2020-02-28 14:39         ` Jean-Philippe Brucker
2020-02-28 14:48           ` Jason Gunthorpe
2020-02-28 15:04             ` Jean-Philippe Brucker
2020-02-28 15:13               ` Jason Gunthorpe
2020-03-06  9:56                 ` Jean-Philippe Brucker
2020-03-06 13:09                   ` Jason Gunthorpe
2020-03-06 14:35                     ` Jean-Philippe Brucker
2020-03-06 14:52                       ` Jason Gunthorpe
2020-03-06 16:15                         ` Jean-Philippe Brucker
2020-03-06 17:42                           ` Jason Gunthorpe
2020-03-13 18:49                             ` Jean-Philippe Brucker
2020-03-13 19:13                               ` Jason Gunthorpe
2020-03-16 15:46                     ` Christoph Hellwig
2020-03-17 18:40                       ` Jason Gunthorpe [this message]
2020-03-05 16:36   ` Christoph Hellwig
2020-02-24 18:23 ` [PATCH v4 02/26] iommu/sva: Manage process address spaces Jean-Philippe Brucker
2020-02-26 12:35   ` Jonathan Cameron
2020-02-28 14:43     ` Jean-Philippe Brucker
2020-02-28 16:26       ` Jonathan Cameron
2020-02-26 19:13   ` Jacob Pan
2020-02-28 14:40     ` Jean-Philippe Brucker
2020-02-28 14:57       ` Jason Gunthorpe
2020-02-24 18:23 ` [PATCH v4 03/26] iommu: Add a page fault handler Jean-Philippe Brucker
2020-02-25  3:30   ` Xu Zaibo
2020-02-25  9:25     ` Jean-Philippe Brucker
2020-02-26  3:05       ` Xu Zaibo
2020-02-26 13:59   ` Jonathan Cameron
2020-02-28 14:44     ` Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 04/26] iommu/sva: Search mm by PASID Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 05/26] iommu/iopf: Handle mm faults Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 06/26] iommu/sva: Register page fault handler Jean-Philippe Brucker
2020-02-26 19:39   ` Jacob Pan
2020-02-28 14:44     ` Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 07/26] arm64: mm: Pin down ASIDs for sharing mm with devices Jean-Philippe Brucker
2020-02-27 17:43   ` Jonathan Cameron
2020-03-04 14:10     ` Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 08/26] iommu/io-pgtable-arm: Move some definitions to a header Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 09/26] iommu/arm-smmu-v3: Manage ASIDs with xarray Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 10/26] arm64: cpufeature: Export symbol read_sanitised_ftr_reg() Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 11/26] iommu/arm-smmu-v3: Share process page tables Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 12/26] iommu/arm-smmu-v3: Seize private ASID Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 13/26] iommu/arm-smmu-v3: Add support for VHE Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 14/26] iommu/arm-smmu-v3: Enable broadcast TLB maintenance Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 15/26] iommu/arm-smmu-v3: Add SVA feature checking Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 16/26] iommu/arm-smmu-v3: Add dev_to_master() helper Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 17/26] iommu/arm-smmu-v3: Implement mm operations Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 18/26] iommu/arm-smmu-v3: Hook up ATC invalidation to mm ops Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 19/26] iommu/arm-smmu-v3: Add support for Hardware Translation Table Update Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 20/26] iommu/arm-smmu-v3: Maintain a SID->device structure Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 21/26] iommu/arm-smmu-v3: Ratelimit event dump Jean-Philippe Brucker
2021-05-28  8:09   ` Aaro Koskinen
2021-05-28 16:25     ` Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 22/26] dt-bindings: document stall property for IOMMU masters Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 23/26] iommu/arm-smmu-v3: Add stall support for platform devices Jean-Philippe Brucker
2020-02-26  8:44   ` Xu Zaibo
2020-03-04 14:09     ` Jean-Philippe Brucker
2020-02-27 18:17   ` Jonathan Cameron
2020-03-04 14:08     ` Jean-Philippe Brucker
2020-03-09 10:48       ` Jonathan Cameron
2020-02-24 18:23 ` [PATCH v4 24/26] PCI/ATS: Add PRI stubs Jean-Philippe Brucker
2020-02-27 20:55   ` Bjorn Helgaas
2020-02-24 18:24 ` [PATCH v4 25/26] PCI/ATS: Export symbols of PRI functions Jean-Philippe Brucker
2020-02-27 20:55   ` Bjorn Helgaas
2020-02-24 18:24 ` [PATCH v4 26/26] iommu/arm-smmu-v3: Add support for PRI Jean-Philippe Brucker
2020-02-27 18:22 ` [PATCH v4 00/26] iommu: Shared Virtual Addressing and SMMUv3 support Jonathan Cameron

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