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[RFC PATCH] vring: Force use of DMA API for ARM-based systems
2016 Dec 20
4
[RFC PATCH] vring: Force use of DMA API for ARM-based systems
Booting Linux on an ARM fastmodel containing an SMMU emulation results in an unexpected I/O page fault from the legacy virtio-blk PCI device: [ 1.211721] arm-smmu-v3 2b400000.smmu: event 0x10 received: [ 1.211800] arm-smmu-v3 2b400000.smmu: 0x00000000fffff010 [ 1.211880] arm-smmu-v3 2b400000.smmu: 0x0000020800000000 [ 1.211959] arm-smmu-...
[RFC PATCH] vring: Force use of DMA API for ARM-based systems
2016 Dec 20
4
[RFC PATCH] vring: Force use of DMA API for ARM-based systems
Booting Linux on an ARM fastmodel containing an SMMU emulation results in an unexpected I/O page fault from the legacy virtio-blk PCI device: [ 1.211721] arm-smmu-v3 2b400000.smmu: event 0x10 received: [ 1.211800] arm-smmu-v3 2b400000.smmu: 0x00000000fffff010 [ 1.211880] arm-smmu-v3 2b400000.smmu: 0x0000020800000000 [ 1.211959] arm-smmu-...
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
2017 Jan 10
3
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
On Tue, Jan 10, 2017 at 05:51:18PM +0000, Robin Murphy wrote: > From: Will Deacon <will.deacon at arm.com> > > Booting Linux on an ARM fastmodel containing an SMMU emulation results > in an unexpected I/O page fault from the legacy virtio-blk PCI device: > > [ 1.211721] arm-smmu-v3 2b400000.smmu: event 0x10 received: > [ 1.211800] arm-smmu-v3 2b400000.smmu: 0x00000000fffff010 > [ 1.211880] arm-smmu-v3 2b400000.smmu: 0x0000020800000000...
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
2017 Jan 10
3
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
On Tue, Jan 10, 2017 at 05:51:18PM +0000, Robin Murphy wrote: > From: Will Deacon <will.deacon at arm.com> > > Booting Linux on an ARM fastmodel containing an SMMU emulation results > in an unexpected I/O page fault from the legacy virtio-blk PCI device: > > [ 1.211721] arm-smmu-v3 2b400000.smmu: event 0x10 received: > [ 1.211800] arm-smmu-v3 2b400000.smmu: 0x00000000fffff010 > [ 1.211880] arm-smmu-v3 2b400000.smmu: 0x0000020800000000...
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
2017 Jan 12
2
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
...acon wrote: > On Wed, Jan 11, 2017 at 01:33:31AM +0200, Michael S. Tsirkin wrote: > > On Tue, Jan 10, 2017 at 05:51:18PM +0000, Robin Murphy wrote: > > > From: Will Deacon <will.deacon at arm.com> > > > > > > Booting Linux on an ARM fastmodel containing an SMMU emulation results > > > in an unexpected I/O page fault from the legacy virtio-blk PCI device: > > > > > > [ 1.211721] arm-smmu-v3 2b400000.smmu: event 0x10 received: > > > [ 1.211800] arm-smmu-v3 2b400000.smmu: 0x00000000fffff010 > > > [ 1.211...
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
2017 Jan 12
2
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
...acon wrote: > On Wed, Jan 11, 2017 at 01:33:31AM +0200, Michael S. Tsirkin wrote: > > On Tue, Jan 10, 2017 at 05:51:18PM +0000, Robin Murphy wrote: > > > From: Will Deacon <will.deacon at arm.com> > > > > > > Booting Linux on an ARM fastmodel containing an SMMU emulation results > > > in an unexpected I/O page fault from the legacy virtio-blk PCI device: > > > > > > [ 1.211721] arm-smmu-v3 2b400000.smmu: event 0x10 received: > > > [ 1.211800] arm-smmu-v3 2b400000.smmu: 0x00000000fffff010 > > > [ 1.211...
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
2017 Jan 11
2
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
...m.com> wrote: > On Wed, Jan 11, 2017 at 01:33:31AM +0200, Michael S. Tsirkin wrote: >> On Tue, Jan 10, 2017 at 05:51:18PM +0000, Robin Murphy wrote: >> > From: Will Deacon <will.deacon at arm.com> >> > >> > Booting Linux on an ARM fastmodel containing an SMMU emulation results >> > in an unexpected I/O page fault from the legacy virtio-blk PCI device: >> > >> > [ 1.211721] arm-smmu-v3 2b400000.smmu: event 0x10 received: >> > [ 1.211800] arm-smmu-v3 2b400000.smmu: 0x00000000fffff010 >> > [ 1.211880]...
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
2017 Jan 11
2
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
...m.com> wrote: > On Wed, Jan 11, 2017 at 01:33:31AM +0200, Michael S. Tsirkin wrote: >> On Tue, Jan 10, 2017 at 05:51:18PM +0000, Robin Murphy wrote: >> > From: Will Deacon <will.deacon at arm.com> >> > >> > Booting Linux on an ARM fastmodel containing an SMMU emulation results >> > in an unexpected I/O page fault from the legacy virtio-blk PCI device: >> > >> > [ 1.211721] arm-smmu-v3 2b400000.smmu: event 0x10 received: >> > [ 1.211800] arm-smmu-v3 2b400000.smmu: 0x00000000fffff010 >> > [ 1.211880]...
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
2017 Jan 13
2
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
...01:33:31AM +0200, Michael S. Tsirkin wrote: > > > > On Tue, Jan 10, 2017 at 05:51:18PM +0000, Robin Murphy wrote: > > > > > From: Will Deacon <will.deacon at arm.com> > > > > > > > > > > Booting Linux on an ARM fastmodel containing an SMMU emulation results > > > > > in an unexpected I/O page fault from the legacy virtio-blk PCI device: > > > > > > > > > > [ 1.211721] arm-smmu-v3 2b400000.smmu: event 0x10 received: > > > > > [ 1.211800] arm-smmu-v3 2b400000.smmu: 0x00...
[RFC PATCH] vring: Force use of DMA API for ARM-based systems
2017 Jan 06
2
[RFC PATCH] vring: Force use of DMA API for ARM-based systems
On 06/01/17 17:48, Jean-Philippe Brucker wrote: > Hi Will, > > On 20/12/16 15:14, Will Deacon wrote: >> Booting Linux on an ARM fastmodel containing an SMMU emulation results >> in an unexpected I/O page fault from the legacy virtio-blk PCI device: >> >> [ 1.211721] arm-smmu-v3 2b400000.smmu: event 0x10 received: >> [ 1.211800] arm-smmu-v3 2b400000.smmu: 0x00000000fffff010 >> [ 1.211880] arm-smmu-v3 2b400000.smmu:...
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
2017 Jan 13
2
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
...01:33:31AM +0200, Michael S. Tsirkin wrote: > > > > On Tue, Jan 10, 2017 at 05:51:18PM +0000, Robin Murphy wrote: > > > > > From: Will Deacon <will.deacon at arm.com> > > > > > > > > > > Booting Linux on an ARM fastmodel containing an SMMU emulation results > > > > > in an unexpected I/O page fault from the legacy virtio-blk PCI device: > > > > > > > > > > [ 1.211721] arm-smmu-v3 2b400000.smmu: event 0x10 received: > > > > > [ 1.211800] arm-smmu-v3 2b400000.smmu: 0x00...
[RFC PATCH] vring: Force use of DMA API for ARM-based systems
2017 Jan 06
2
[RFC PATCH] vring: Force use of DMA API for ARM-based systems
On 06/01/17 17:48, Jean-Philippe Brucker wrote: > Hi Will, > > On 20/12/16 15:14, Will Deacon wrote: >> Booting Linux on an ARM fastmodel containing an SMMU emulation results >> in an unexpected I/O page fault from the legacy virtio-blk PCI device: >> >> [ 1.211721] arm-smmu-v3 2b400000.smmu: event 0x10 received: >> [ 1.211800] arm-smmu-v3 2b400000.smmu: 0x00000000fffff010 >> [ 1.211880] arm-smmu-v3 2b400000.smmu:...
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
2017 Jan 24
2
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
...gt;>>>>>>>>> On Fri, Jan 13, 2017 at 09:25:22AM +0000, Will Deacon wrote: >>>>>>>>>>> On Fri, Jan 13, 2017 at 12:12:56AM +0200, Michael S. Tsirkin wrote: >>>>>>>>>>>> I'd rather people didn't use SMMU with legacy devices. >>>>>>>>>>> >>>>>>>>>>> I'm afraid we've been doing that for two years and the model already >>>>>>>>>>> exists in a mature state, being actively used for development and...
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
2017 Jan 24
2
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
...gt;>>>>>>>>> On Fri, Jan 13, 2017 at 09:25:22AM +0000, Will Deacon wrote: >>>>>>>>>>> On Fri, Jan 13, 2017 at 12:12:56AM +0200, Michael S. Tsirkin wrote: >>>>>>>>>>>> I'd rather people didn't use SMMU with legacy devices. >>>>>>>>>>> >>>>>>>>>>> I'm afraid we've been doing that for two years and the model already >>>>>>>>>>> exists in a mature state, being actively used for development and...
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
2017 Jan 19
2
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
...gt; > > > > > > > On Fri, Jan 13, 2017 at 09:25:22AM +0000, Will Deacon wrote: > > > > > > > > > On Fri, Jan 13, 2017 at 12:12:56AM +0200, Michael S. Tsirkin wrote: > > > > > > > > > > I'd rather people didn't use SMMU with legacy devices. > > > > > > > > > > > > > > > > > > I'm afraid we've been doing that for two years and the model already > > > > > > > > > exists in a mature state, being actively used for development and...
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
2017 Jan 19
2
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
...gt; > > > > > > > On Fri, Jan 13, 2017 at 09:25:22AM +0000, Will Deacon wrote: > > > > > > > > > On Fri, Jan 13, 2017 at 12:12:56AM +0200, Michael S. Tsirkin wrote: > > > > > > > > > > I'd rather people didn't use SMMU with legacy devices. > > > > > > > > > > > > > > > > > > I'm afraid we've been doing that for two years and the model already > > > > > > > > > exists in a mature state, being actively used for development and...
[PATCH v2 17/33] iommu/arm-smmu: Convert to probe/release_device() call-backs
2020 Apr 14
0
[PATCH v2 17/33] iommu/arm-smmu: Convert to probe/release_device() call-backs
From: Joerg Roedel <jroedel at suse.de> Convert the arm-smmu and arm-smmu-v3 drivers to use the probe_device() and release_device() call-backs of iommu_ops, so that the iommu core code does the group and sysfs setup. Signed-off-by: Joerg Roedel <jroedel at suse.de> --- drivers/iommu/arm-smmu-v3.c | 38 ++++++++++-------------------------- drivers/iom...
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
2017 Jan 13
2
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
...ote: > > > > > > On Tue, Jan 10, 2017 at 05:51:18PM +0000, Robin Murphy wrote: > > > > > > > From: Will Deacon <will.deacon at arm.com> > > > > > > > > > > > > > > Booting Linux on an ARM fastmodel containing an SMMU emulation results > > > > > > > in an unexpected I/O page fault from the legacy virtio-blk PCI device: > > > > > > > > > > > > > > [ 1.211721] arm-smmu-v3 2b400000.smmu: event 0x10 received: > > > > > > > [ 1...
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
2017 Jan 13
2
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
...ote: > > > > > > On Tue, Jan 10, 2017 at 05:51:18PM +0000, Robin Murphy wrote: > > > > > > > From: Will Deacon <will.deacon at arm.com> > > > > > > > > > > > > > > Booting Linux on an ARM fastmodel containing an SMMU emulation results > > > > > > > in an unexpected I/O page fault from the legacy virtio-blk PCI device: > > > > > > > > > > > > > > [ 1.211721] arm-smmu-v3 2b400000.smmu: event 0x10 received: > > > > > > > [ 1...
[RFC PATCH 17/34] iommu/arm-smmu: Store device instead of group in arm_smmu_s2cr
2020 Apr 08
1
[RFC PATCH 17/34] iommu/arm-smmu: Store device instead of group in arm_smmu_s2cr
...use-after-free of A >> >> Preserving the logical behaviour here would probably look *something* like >> the mangled diff below, but I haven't thought it through 100%. > > Yeah, I think you are right. How about just moving the loop which sets > s2crs[idx].group to arm_smmu_device_group()? In that case I can drop > this patch and leave the group pointer in place. Isn't that exactly what I suggested? :) I don't recall for sure, but knowing me, that bit of group bookkeeping is only where it currently is because it cheekily saves iterating the IDs a second...