From: Sricharan R <sricharan@codeaurora.org> To: robin.murphy@arm.com, will.deacon@arm.com, joro@8bytes.org, lorenzo.pieralisi@arm.com, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, m.szyprowski@samsung.com, bhelgaas@google.com, linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org Cc: sricharan@codeaurora.org Subject: [PATCH V7 07/11] iommu: of: Handle IOMMU lookup failure with deferred probing or error Date: Mon, 23 Jan 2017 21:48:09 +0530 [thread overview] Message-ID: <1485188293-20263-8-git-send-email-sricharan@codeaurora.org> (raw) In-Reply-To: <1485188293-20263-1-git-send-email-sricharan@codeaurora.org> From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Failures to look up an IOMMU when parsing the DT iommus property need to be handled separately from the .of_xlate() failures to support deferred probing. The lack of a registered IOMMU can be caused by the lack of a driver for the IOMMU, the IOMMU device probe not having been performed yet, having been deferred, or having failed. The first case occurs when the device tree describes the bus master and IOMMU topology correctly but no device driver exists for the IOMMU yet or the device driver has not been compiled in. Return NULL, the caller will configure the device without an IOMMU. The second and third cases are handled by deferring the probe of the bus master device which will eventually get reprobed after the IOMMU. The last case is currently handled by deferring the probe of the bus master device as well. A mechanism to either configure the bus master device without an IOMMU or to fail the bus master device probe depending on whether the IOMMU is optional or mandatory would be a good enhancement. Signed-off-by: Laurent Pichart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Sricharan R <sricharan@codeaurora.org> --- drivers/base/dma-mapping.c | 5 +++-- drivers/iommu/of_iommu.c | 5 +++-- drivers/of/device.c | 9 +++++++-- include/linux/of_device.h | 9 ++++++--- 4 files changed, 19 insertions(+), 9 deletions(-) diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c index 449b948..82bd45c 100644 --- a/drivers/base/dma-mapping.c +++ b/drivers/base/dma-mapping.c @@ -353,6 +353,7 @@ int dma_configure(struct device *dev) { struct device *bridge = NULL, *dma_dev = dev; enum dev_dma_attr attr; + int ret = 0; if (dev_is_pci(dev)) { bridge = pci_get_host_bridge_device(to_pci_dev(dev)); @@ -363,7 +364,7 @@ int dma_configure(struct device *dev) } if (dma_dev->of_node) { - of_dma_configure(dev, dma_dev->of_node); + ret = of_dma_configure(dev, dma_dev->of_node); } else if (has_acpi_companion(dma_dev)) { attr = acpi_get_dma_attr(to_acpi_device_node(dma_dev->fwnode)); if (attr != DEV_DMA_NOT_SUPPORTED) @@ -373,7 +374,7 @@ int dma_configure(struct device *dev) if (bridge) pci_put_host_bridge_device(bridge); - return 0; + return ret; } void dma_deconfigure(struct device *dev) diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c index 349bd1d..9529d6c 100644 --- a/drivers/iommu/of_iommu.c +++ b/drivers/iommu/of_iommu.c @@ -23,6 +23,7 @@ #include <linux/of.h> #include <linux/of_iommu.h> #include <linux/of_pci.h> +#include <linux/pci.h> #include <linux/slab.h> static const struct of_device_id __iommu_of_table_sentinel @@ -223,7 +224,7 @@ const struct iommu_ops *of_iommu_configure(struct device *dev, ops = ERR_PTR(err); } - return IS_ERR(ops) ? NULL : ops; + return ops; } static int __init of_iommu_init(void) @@ -234,7 +235,7 @@ static int __init of_iommu_init(void) for_each_matching_node_and_match(np, matches, &match) { const of_iommu_init_fn init_fn = match->data; - if (init_fn(np)) + if (init_fn && init_fn(np)) pr_err("Failed to initialise IOMMU %s\n", of_node_full_name(np)); } diff --git a/drivers/of/device.c b/drivers/of/device.c index 1c843e2..d58595c 100644 --- a/drivers/of/device.c +++ b/drivers/of/device.c @@ -82,7 +82,7 @@ int of_device_add(struct platform_device *ofdev) * can use a platform bus notifier and handle BUS_NOTIFY_ADD_DEVICE events * to fix up DMA configuration. */ -void of_dma_configure(struct device *dev, struct device_node *np) +int of_dma_configure(struct device *dev, struct device_node *np) { u64 dma_addr, paddr, size; int ret; @@ -107,7 +107,7 @@ void of_dma_configure(struct device *dev, struct device_node *np) ret = of_dma_get_range(np, &dma_addr, &paddr, &size); if (ret < 0) { dma_addr = offset = 0; - size = dev->coherent_dma_mask + 1; + size = max(dev->coherent_dma_mask, dev->coherent_dma_mask + 1); } else { offset = PFN_DOWN(paddr - dma_addr); dev_dbg(dev, "dma_pfn_offset(%#08lx)\n", offset); @@ -129,10 +129,15 @@ void of_dma_configure(struct device *dev, struct device_node *np) coherent ? " " : " not "); iommu = of_iommu_configure(dev, np); + if (IS_ERR(iommu)) + return PTR_ERR(iommu); + dev_dbg(dev, "device is%sbehind an iommu\n", iommu ? " " : " not "); arch_setup_dma_ops(dev, dma_addr, size, iommu, coherent); + + return 0; } EXPORT_SYMBOL_GPL(of_dma_configure); diff --git a/include/linux/of_device.h b/include/linux/of_device.h index d20a31a..6dca65c 100644 --- a/include/linux/of_device.h +++ b/include/linux/of_device.h @@ -55,7 +55,7 @@ static inline struct device_node *of_cpu_device_node_get(int cpu) return of_node_get(cpu_dev->of_node); } -void of_dma_configure(struct device *dev, struct device_node *np); +int of_dma_configure(struct device *dev, struct device_node *np); void of_dma_deconfigure(struct device *dev); #else /* CONFIG_OF */ @@ -99,8 +99,11 @@ static inline struct device_node *of_cpu_device_node_get(int cpu) { return NULL; } -static inline void of_dma_configure(struct device *dev, struct device_node *np) -{} + +static inline int of_dma_configure(struct device *dev, struct device_node *np) +{ + return 0; +} static inline void of_dma_deconfigure(struct device *dev) {} #endif /* CONFIG_OF */ -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
WARNING: multiple messages have this Message-ID (diff)
From: sricharan@codeaurora.org (Sricharan R) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH V7 07/11] iommu: of: Handle IOMMU lookup failure with deferred probing or error Date: Mon, 23 Jan 2017 21:48:09 +0530 [thread overview] Message-ID: <1485188293-20263-8-git-send-email-sricharan@codeaurora.org> (raw) In-Reply-To: <1485188293-20263-1-git-send-email-sricharan@codeaurora.org> From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Failures to look up an IOMMU when parsing the DT iommus property need to be handled separately from the .of_xlate() failures to support deferred probing. The lack of a registered IOMMU can be caused by the lack of a driver for the IOMMU, the IOMMU device probe not having been performed yet, having been deferred, or having failed. The first case occurs when the device tree describes the bus master and IOMMU topology correctly but no device driver exists for the IOMMU yet or the device driver has not been compiled in. Return NULL, the caller will configure the device without an IOMMU. The second and third cases are handled by deferring the probe of the bus master device which will eventually get reprobed after the IOMMU. The last case is currently handled by deferring the probe of the bus master device as well. A mechanism to either configure the bus master device without an IOMMU or to fail the bus master device probe depending on whether the IOMMU is optional or mandatory would be a good enhancement. Signed-off-by: Laurent Pichart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Sricharan R <sricharan@codeaurora.org> --- drivers/base/dma-mapping.c | 5 +++-- drivers/iommu/of_iommu.c | 5 +++-- drivers/of/device.c | 9 +++++++-- include/linux/of_device.h | 9 ++++++--- 4 files changed, 19 insertions(+), 9 deletions(-) diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c index 449b948..82bd45c 100644 --- a/drivers/base/dma-mapping.c +++ b/drivers/base/dma-mapping.c @@ -353,6 +353,7 @@ int dma_configure(struct device *dev) { struct device *bridge = NULL, *dma_dev = dev; enum dev_dma_attr attr; + int ret = 0; if (dev_is_pci(dev)) { bridge = pci_get_host_bridge_device(to_pci_dev(dev)); @@ -363,7 +364,7 @@ int dma_configure(struct device *dev) } if (dma_dev->of_node) { - of_dma_configure(dev, dma_dev->of_node); + ret = of_dma_configure(dev, dma_dev->of_node); } else if (has_acpi_companion(dma_dev)) { attr = acpi_get_dma_attr(to_acpi_device_node(dma_dev->fwnode)); if (attr != DEV_DMA_NOT_SUPPORTED) @@ -373,7 +374,7 @@ int dma_configure(struct device *dev) if (bridge) pci_put_host_bridge_device(bridge); - return 0; + return ret; } void dma_deconfigure(struct device *dev) diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c index 349bd1d..9529d6c 100644 --- a/drivers/iommu/of_iommu.c +++ b/drivers/iommu/of_iommu.c @@ -23,6 +23,7 @@ #include <linux/of.h> #include <linux/of_iommu.h> #include <linux/of_pci.h> +#include <linux/pci.h> #include <linux/slab.h> static const struct of_device_id __iommu_of_table_sentinel @@ -223,7 +224,7 @@ const struct iommu_ops *of_iommu_configure(struct device *dev, ops = ERR_PTR(err); } - return IS_ERR(ops) ? NULL : ops; + return ops; } static int __init of_iommu_init(void) @@ -234,7 +235,7 @@ static int __init of_iommu_init(void) for_each_matching_node_and_match(np, matches, &match) { const of_iommu_init_fn init_fn = match->data; - if (init_fn(np)) + if (init_fn && init_fn(np)) pr_err("Failed to initialise IOMMU %s\n", of_node_full_name(np)); } diff --git a/drivers/of/device.c b/drivers/of/device.c index 1c843e2..d58595c 100644 --- a/drivers/of/device.c +++ b/drivers/of/device.c @@ -82,7 +82,7 @@ int of_device_add(struct platform_device *ofdev) * can use a platform bus notifier and handle BUS_NOTIFY_ADD_DEVICE events * to fix up DMA configuration. */ -void of_dma_configure(struct device *dev, struct device_node *np) +int of_dma_configure(struct device *dev, struct device_node *np) { u64 dma_addr, paddr, size; int ret; @@ -107,7 +107,7 @@ void of_dma_configure(struct device *dev, struct device_node *np) ret = of_dma_get_range(np, &dma_addr, &paddr, &size); if (ret < 0) { dma_addr = offset = 0; - size = dev->coherent_dma_mask + 1; + size = max(dev->coherent_dma_mask, dev->coherent_dma_mask + 1); } else { offset = PFN_DOWN(paddr - dma_addr); dev_dbg(dev, "dma_pfn_offset(%#08lx)\n", offset); @@ -129,10 +129,15 @@ void of_dma_configure(struct device *dev, struct device_node *np) coherent ? " " : " not "); iommu = of_iommu_configure(dev, np); + if (IS_ERR(iommu)) + return PTR_ERR(iommu); + dev_dbg(dev, "device is%sbehind an iommu\n", iommu ? " " : " not "); arch_setup_dma_ops(dev, dma_addr, size, iommu, coherent); + + return 0; } EXPORT_SYMBOL_GPL(of_dma_configure); diff --git a/include/linux/of_device.h b/include/linux/of_device.h index d20a31a..6dca65c 100644 --- a/include/linux/of_device.h +++ b/include/linux/of_device.h @@ -55,7 +55,7 @@ static inline struct device_node *of_cpu_device_node_get(int cpu) return of_node_get(cpu_dev->of_node); } -void of_dma_configure(struct device *dev, struct device_node *np); +int of_dma_configure(struct device *dev, struct device_node *np); void of_dma_deconfigure(struct device *dev); #else /* CONFIG_OF */ @@ -99,8 +99,11 @@ static inline struct device_node *of_cpu_device_node_get(int cpu) { return NULL; } -static inline void of_dma_configure(struct device *dev, struct device_node *np) -{} + +static inline int of_dma_configure(struct device *dev, struct device_node *np) +{ + return 0; +} static inline void of_dma_deconfigure(struct device *dev) {} #endif /* CONFIG_OF */ -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
next prev parent reply other threads:[~2017-01-23 16:18 UTC|newest] Thread overview: 147+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <CGME20170123161926epcas2p1cf464a2978d89d0c1fdd2f7cc6d38317@epcas2p1.samsung.com> 2017-01-23 16:18 ` [PATCH V7 00/11] IOMMU probe deferral support Sricharan R 2017-01-23 16:18 ` Sricharan R 2017-01-23 16:18 ` [PATCH V7 01/11] iommu/of: Refactor of_iommu_configure() for error handling Sricharan R 2017-01-23 16:18 ` Sricharan R 2017-01-23 16:18 ` Sricharan R [not found] ` <1485188293-20263-2-git-send-email-sricharan-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-01-25 17:17 ` Tomasz Nowicki 2017-01-25 17:17 ` Tomasz Nowicki 2017-01-25 17:17 ` Tomasz Nowicki 2017-01-25 17:35 ` Robin Murphy 2017-01-25 17:35 ` Robin Murphy 2017-01-25 18:13 ` Tomasz Nowicki 2017-01-25 18:13 ` Tomasz Nowicki [not found] ` <c7bad124-d9f2-0ddf-168f-0b1950d3e1ed-5wv7dgnIgG8@public.gmane.org> 2017-01-27 18:00 ` Sricharan 2017-01-27 18:00 ` Sricharan 2017-01-27 18:00 ` Sricharan 2017-01-27 18:19 ` Robin Murphy 2017-01-27 18:19 ` Robin Murphy 2017-01-27 18:19 ` Robin Murphy 2017-01-30 7:00 ` Sricharan 2017-01-30 7:00 ` Sricharan 2017-01-30 7:00 ` Sricharan 2017-01-30 18:42 ` Robin Murphy 2017-01-30 18:42 ` Robin Murphy 2017-01-30 18:42 ` Robin Murphy [not found] ` <8387d057-15bd-500c-134e-0e731ff837d6-5wv7dgnIgG8@public.gmane.org> 2017-01-31 13:11 ` Sricharan 2017-01-31 13:11 ` Sricharan 2017-01-31 13:11 ` Sricharan 2017-01-23 16:18 ` [PATCH V7 02/11] iommu/of: Prepare for deferred IOMMU configuration Sricharan R 2017-01-23 16:18 ` Sricharan R 2017-01-23 16:18 ` [PATCH V7 03/11] of: dma: Move range size workaround to of_dma_get_range() Sricharan R 2017-01-23 16:18 ` Sricharan R 2017-01-23 16:18 ` [PATCH V7 05/11] ACPI/IORT: Add function to check SMMUs drivers presence Sricharan R 2017-01-23 16:18 ` Sricharan R 2017-01-23 16:18 ` [PATCH V7 06/11] of/acpi: Configure dma operations at probe time for platform/amba/pci bus devices Sricharan R 2017-01-23 16:18 ` Sricharan R 2017-01-28 21:08 ` Bjorn Helgaas 2017-01-28 21:08 ` Bjorn Helgaas 2017-01-30 7:09 ` Rafael J. Wysocki 2017-01-30 7:09 ` Rafael J. Wysocki 2017-01-23 16:18 ` Sricharan R [this message] 2017-01-23 16:18 ` [PATCH V7 07/11] iommu: of: Handle IOMMU lookup failure with deferred probing or error Sricharan R [not found] ` <1485188293-20263-8-git-send-email-sricharan-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-01-28 21:03 ` Bjorn Helgaas 2017-01-28 21:03 ` Bjorn Helgaas 2017-01-28 21:03 ` Bjorn Helgaas 2017-01-30 8:01 ` Sricharan 2017-01-30 8:01 ` Sricharan 2017-01-30 8:01 ` Sricharan 2017-01-29 16:36 ` Sinan Kaya 2017-01-29 16:36 ` Sinan Kaya 2017-01-29 16:36 ` Sinan Kaya [not found] ` <34a703f0-3b37-88f0-46fa-b56ab6717a42-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-01-30 12:00 ` Sricharan 2017-01-30 12:00 ` Sricharan 2017-01-30 12:00 ` Sricharan 2017-01-23 16:18 ` [PATCH V7 08/11] drivers: acpi: " Sricharan R 2017-01-23 16:18 ` Sricharan R 2017-01-24 12:37 ` Lorenzo Pieralisi 2017-01-24 12:37 ` Lorenzo Pieralisi 2017-01-24 13:14 ` Hanjun Guo 2017-01-24 13:14 ` Hanjun Guo 2017-01-24 13:14 ` Hanjun Guo 2017-01-25 7:31 ` Sricharan 2017-01-25 7:31 ` Sricharan 2017-01-25 7:31 ` Sricharan 2017-01-29 17:53 ` Sinan Kaya 2017-01-29 17:53 ` Sinan Kaya 2017-01-29 17:53 ` Sinan Kaya [not found] ` <f2370671-ece8-fbee-de19-350dd625088f-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-01-30 12:22 ` Robin Murphy 2017-01-30 12:22 ` Robin Murphy 2017-01-30 12:22 ` Robin Murphy [not found] ` <93e79759-d614-9b36-d5ab-63e8eb725009-5wv7dgnIgG8@public.gmane.org> 2017-01-30 13:59 ` Sinan Kaya 2017-01-30 13:59 ` Sinan Kaya 2017-01-30 13:59 ` Sinan Kaya [not found] ` <14751205-f034-7f0d-442a-854c3909425c-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-01-30 14:23 ` Nate Watterson 2017-01-30 14:23 ` Nate Watterson 2017-01-30 14:23 ` Nate Watterson [not found] ` <5ba9f366d6e25397cdef8ad95b49e199-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-01-30 14:33 ` Sinan Kaya 2017-01-30 14:33 ` Sinan Kaya 2017-01-30 14:33 ` Sinan Kaya 2017-01-30 14:38 ` Will Deacon 2017-01-30 14:38 ` Will Deacon 2017-01-30 14:38 ` Will Deacon [not found] ` <20170130143851.GJ16461-5wv7dgnIgG8@public.gmane.org> 2017-01-30 14:54 ` Nate Watterson 2017-01-30 14:54 ` Nate Watterson 2017-01-30 14:54 ` Nate Watterson [not found] ` <b2e50c17de156341deab9fb8e91a8dec-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-01-30 15:46 ` Sinan Kaya 2017-01-30 15:46 ` Sinan Kaya 2017-01-30 15:46 ` Sinan Kaya [not found] ` <1e048aff-0d77-b9f2-ebf8-2ba315b90ca7-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-01-30 16:51 ` Lorenzo Pieralisi 2017-01-30 16:51 ` Lorenzo Pieralisi 2017-01-30 16:51 ` Lorenzo Pieralisi 2017-01-30 20:03 ` Sinan Kaya 2017-01-30 20:03 ` Sinan Kaya 2017-02-01 18:52 ` Lorenzo Pieralisi 2017-02-01 18:52 ` Lorenzo Pieralisi 2017-02-01 18:52 ` Lorenzo Pieralisi 2017-02-01 19:10 ` Sinan Kaya 2017-02-01 19:10 ` Sinan Kaya 2017-02-01 19:10 ` Sinan Kaya 2017-02-02 19:01 ` Nate Watterson 2017-02-02 19:01 ` Nate Watterson [not found] ` <3f4aa4c1e660c7e62256de9ca64fc822-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-02-03 3:37 ` Hanjun Guo 2017-02-03 3:37 ` Hanjun Guo 2017-02-03 3:37 ` Hanjun Guo 2017-02-03 3:37 ` Sricharan 2017-02-03 3:37 ` Sricharan 2017-02-03 3:37 ` Sricharan 2017-01-23 16:18 ` [PATCH V7 09/11] arm64: dma-mapping: Remove the notifier trick to handle early setting of dma_ops Sricharan R 2017-01-23 16:18 ` Sricharan R [not found] ` <1485188293-20263-10-git-send-email-sricharan-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-01-28 21:06 ` Bjorn Helgaas 2017-01-28 21:06 ` Bjorn Helgaas 2017-01-28 21:06 ` Bjorn Helgaas [not found] ` <20170128210611.GF20550-1RhO1Y9PlrlHTL0Zs8A6p5iNqAH0jzoTYJqu5kTmcBRl57MIdRCFDg@public.gmane.org> 2017-01-30 8:04 ` Sricharan 2017-01-30 8:04 ` Sricharan 2017-01-30 8:04 ` Sricharan 2017-01-23 16:18 ` [PATCH V7 10/11] iommu/arm-smmu: Clean up early-probing workarounds Sricharan R 2017-01-23 16:18 ` Sricharan R 2017-01-25 17:28 ` Tomasz Nowicki 2017-01-25 17:28 ` Tomasz Nowicki [not found] ` <1485188293-20263-11-git-send-email-sricharan-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-01-28 21:07 ` Bjorn Helgaas 2017-01-28 21:07 ` Bjorn Helgaas 2017-01-28 21:07 ` Bjorn Helgaas [not found] ` <20170128210709.GG20550-1RhO1Y9PlrlHTL0Zs8A6p5iNqAH0jzoTYJqu5kTmcBRl57MIdRCFDg@public.gmane.org> 2017-01-30 8:05 ` Sricharan 2017-01-30 8:05 ` Sricharan 2017-01-30 8:05 ` Sricharan 2017-01-23 16:18 ` [PATCH V7 11/11] ACPI/IORT: Remove linker section for IORT entries probing Sricharan R 2017-01-23 16:18 ` Sricharan R [not found] ` <1485188293-20263-1-git-send-email-sricharan-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-01-23 16:18 ` [PATCH V7 04/11] of: dma: Make of_dma_deconfigure() public Sricharan R 2017-01-23 16:18 ` Sricharan R 2017-01-23 16:18 ` Sricharan R 2017-01-24 7:40 ` [PATCH V7 00/11] IOMMU probe deferral support Marek Szyprowski 2017-01-24 7:40 ` Marek Szyprowski 2017-01-24 7:40 ` Marek Szyprowski 2017-01-24 11:15 ` Sricharan 2017-01-24 11:15 ` Sricharan 2017-01-24 11:15 ` Sricharan 2017-01-25 4:33 ` Hanjun Guo 2017-01-25 4:33 ` Hanjun Guo 2017-01-25 4:33 ` Hanjun Guo 2017-01-25 7:33 ` Sricharan 2017-01-25 7:33 ` Sricharan 2017-01-25 7:33 ` Sricharan 2017-01-28 21:10 ` Bjorn Helgaas 2017-01-28 21:10 ` Bjorn Helgaas 2017-01-28 21:10 ` Bjorn Helgaas [not found] ` <20170128211029.GI20550-1RhO1Y9PlrlHTL0Zs8A6p5iNqAH0jzoTYJqu5kTmcBRl57MIdRCFDg@public.gmane.org> 2017-01-30 9:20 ` Sricharan 2017-01-30 9:20 ` Sricharan 2017-01-30 9:20 ` Sricharan
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