From: Christoph Hellwig <hch@lst.de>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org, iommu@lists.linux-foundation.org,
linux-mm@kvack.org, linux-arch@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 09/34] powerpc/dma: handle iommu bypass in dma_iommu_ops
Date: Wed, 14 Nov 2018 09:22:49 +0100 [thread overview]
Message-ID: <20181114082314.8965-10-hch@lst.de> (raw)
In-Reply-To: <20181114082314.8965-1-hch@lst.de>
Add a new iommu_bypass flag to struct dev_archdata so that the dma_iommu
implementation can handle the direct mapping transparently instead of
switiching ops around. Setting of this flag is controlled by new
pci_controller_ops method.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
arch/powerpc/include/asm/device.h | 5 ++
arch/powerpc/include/asm/dma-mapping.h | 8 +++
arch/powerpc/include/asm/pci-bridge.h | 2 +
arch/powerpc/kernel/dma-iommu.c | 70 +++++++++++++++++++++++---
arch/powerpc/kernel/dma.c | 19 +++----
5 files changed, 87 insertions(+), 17 deletions(-)
diff --git a/arch/powerpc/include/asm/device.h b/arch/powerpc/include/asm/device.h
index 0245bfcaac32..1aa53318b4bc 100644
--- a/arch/powerpc/include/asm/device.h
+++ b/arch/powerpc/include/asm/device.h
@@ -19,6 +19,11 @@ struct iommu_table;
* drivers/macintosh/macio_asic.c
*/
struct dev_archdata {
+ /*
+ * Set to %true if the dma_iommu_ops are requested to use a direct
+ * window instead of dynamically mapping memory.
+ */
+ bool iommu_bypass : 1;
/*
* These two used to be a union. However, with the hybrid ops we need
* both so here we store both a DMA offset for direct mappings and
diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h
index dacd0f93f2b2..824f55995a18 100644
--- a/arch/powerpc/include/asm/dma-mapping.h
+++ b/arch/powerpc/include/asm/dma-mapping.h
@@ -29,6 +29,14 @@ extern int dma_nommu_mmap_coherent(struct device *dev,
struct vm_area_struct *vma,
void *cpu_addr, dma_addr_t handle,
size_t size, unsigned long attrs);
+int dma_nommu_map_sg(struct device *dev, struct scatterlist *sgl,
+ int nents, enum dma_data_direction direction,
+ unsigned long attrs);
+dma_addr_t dma_nommu_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir, unsigned long attrs);
+int dma_nommu_dma_supported(struct device *dev, u64 mask);
+u64 dma_nommu_get_required_mask(struct device *dev);
#ifdef CONFIG_NOT_COHERENT_CACHE
/*
diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h
index 94d449031b18..5c7a1e7ffc8a 100644
--- a/arch/powerpc/include/asm/pci-bridge.h
+++ b/arch/powerpc/include/asm/pci-bridge.h
@@ -19,6 +19,8 @@ struct device_node;
struct pci_controller_ops {
void (*dma_dev_setup)(struct pci_dev *pdev);
void (*dma_bus_setup)(struct pci_bus *bus);
+ bool (*iommu_bypass_supported)(struct pci_dev *pdev,
+ u64 mask);
int (*probe_mode)(struct pci_bus *bus);
diff --git a/arch/powerpc/kernel/dma-iommu.c b/arch/powerpc/kernel/dma-iommu.c
index 0613278abf9f..459be16f8334 100644
--- a/arch/powerpc/kernel/dma-iommu.c
+++ b/arch/powerpc/kernel/dma-iommu.c
@@ -6,12 +6,30 @@
* busses using the iommu infrastructure
*/
+#include <linux/dma-direct.h>
+#include <linux/pci.h>
#include <asm/iommu.h>
/*
* Generic iommu implementation
*/
+/*
+ * The coherent mask may be smaller than the real mask, check if we can
+ * really use a direct window.
+ */
+static inline bool dma_iommu_alloc_bypass(struct device *dev)
+{
+ return dev->archdata.iommu_bypass &&
+ dma_nommu_dma_supported(dev, dev->coherent_dma_mask);
+}
+
+static inline bool dma_iommu_map_bypass(struct device *dev,
+ unsigned long attrs)
+{
+ return dev->archdata.iommu_bypass;
+}
+
/* Allocates a contiguous real buffer and creates mappings over it.
* Returns the virtual address of the buffer and sets dma_handle
* to the dma address (mapping) of the first page.
@@ -20,6 +38,9 @@ static void *dma_iommu_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
unsigned long attrs)
{
+ if (dma_iommu_alloc_bypass(dev))
+ return __dma_nommu_alloc_coherent(dev, size, dma_handle, flag,
+ attrs);
return iommu_alloc_coherent(dev, get_iommu_table_base(dev), size,
dma_handle, dev->coherent_dma_mask, flag,
dev_to_node(dev));
@@ -29,7 +50,11 @@ static void dma_iommu_free_coherent(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle,
unsigned long attrs)
{
- iommu_free_coherent(get_iommu_table_base(dev), size, vaddr, dma_handle);
+ if (dma_iommu_alloc_bypass(dev))
+ __dma_nommu_free_coherent(dev, size, vaddr, dma_handle, attrs);
+ else
+ iommu_free_coherent(get_iommu_table_base(dev), size, vaddr,
+ dma_handle);
}
/* Creates TCEs for a user provided buffer. The user buffer must be
@@ -42,6 +67,9 @@ static dma_addr_t dma_iommu_map_page(struct device *dev, struct page *page,
enum dma_data_direction direction,
unsigned long attrs)
{
+ if (dma_iommu_map_bypass(dev, attrs))
+ return dma_nommu_map_page(dev, page, offset, size, direction,
+ attrs);
return iommu_map_page(dev, get_iommu_table_base(dev), page, offset,
size, device_to_mask(dev), direction, attrs);
}
@@ -51,8 +79,9 @@ static void dma_iommu_unmap_page(struct device *dev, dma_addr_t dma_handle,
size_t size, enum dma_data_direction direction,
unsigned long attrs)
{
- iommu_unmap_page(get_iommu_table_base(dev), dma_handle, size, direction,
- attrs);
+ if (!dma_iommu_map_bypass(dev, attrs))
+ iommu_unmap_page(get_iommu_table_base(dev), dma_handle, size,
+ direction, attrs);
}
@@ -60,6 +89,8 @@ static int dma_iommu_map_sg(struct device *dev, struct scatterlist *sglist,
int nelems, enum dma_data_direction direction,
unsigned long attrs)
{
+ if (dma_iommu_map_bypass(dev, attrs))
+ return dma_nommu_map_sg(dev, sglist, nelems, direction, attrs);
return ppc_iommu_map_sg(dev, get_iommu_table_base(dev), sglist, nelems,
device_to_mask(dev), direction, attrs);
}
@@ -68,10 +99,20 @@ static void dma_iommu_unmap_sg(struct device *dev, struct scatterlist *sglist,
int nelems, enum dma_data_direction direction,
unsigned long attrs)
{
- ppc_iommu_unmap_sg(get_iommu_table_base(dev), sglist, nelems,
+ if (!dma_iommu_map_bypass(dev, attrs))
+ ppc_iommu_unmap_sg(get_iommu_table_base(dev), sglist, nelems,
direction, attrs);
}
+static bool dma_iommu_bypass_supported(struct device *dev, u64 mask)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct pci_controller *phb = pci_bus_to_host(pdev->bus);
+
+ return phb->controller_ops.iommu_bypass_supported &&
+ phb->controller_ops.iommu_bypass_supported(pdev, mask);
+}
+
/* We support DMA to/from any memory page via the iommu */
int dma_iommu_dma_supported(struct device *dev, u64 mask)
{
@@ -83,22 +124,39 @@ int dma_iommu_dma_supported(struct device *dev, u64 mask)
return 0;
}
+ if (dev_is_pci(dev) && dma_iommu_bypass_supported(dev, mask)) {
+ dev->archdata.iommu_bypass = true;
+ dev_dbg(dev, "iommu: 64-bit OK, using fixed ops\n");
+ return 1;
+ }
+
if (tbl->it_offset > (mask >> tbl->it_page_shift)) {
dev_info(dev, "Warning: IOMMU offset too big for device mask\n");
dev_info(dev, "mask: 0x%08llx, table offset: 0x%08lx\n",
mask, tbl->it_offset << tbl->it_page_shift);
return 0;
- } else
- return 1;
+ }
+
+ dev_dbg(dev, "iommu: not 64-bit, using default ops\n");
+ dev->archdata.iommu_bypass = false;
+ return 1;
}
u64 dma_iommu_get_required_mask(struct device *dev)
{
struct iommu_table *tbl = get_iommu_table_base(dev);
u64 mask;
+
if (!tbl)
return 0;
+ if (dev_is_pci(dev)) {
+ u64 bypass_mask = dma_nommu_get_required_mask(dev);
+
+ if (dma_iommu_bypass_supported(dev, bypass_mask))
+ return bypass_mask;
+ }
+
mask = 1ULL < (fls_long(tbl->it_offset + tbl->it_size) - 1);
mask += mask - 1;
diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c
index 7078d72baec2..6c368b6820bb 100644
--- a/arch/powerpc/kernel/dma.c
+++ b/arch/powerpc/kernel/dma.c
@@ -40,7 +40,7 @@ static u64 __maybe_unused get_pfn_limit(struct device *dev)
return pfn;
}
-static int dma_nommu_dma_supported(struct device *dev, u64 mask)
+int dma_nommu_dma_supported(struct device *dev, u64 mask)
{
#ifdef CONFIG_PPC64
u64 limit = get_dma_offset(dev) + (memblock_end_of_DRAM() - 1);
@@ -177,9 +177,9 @@ int dma_nommu_mmap_coherent(struct device *dev, struct vm_area_struct *vma,
vma->vm_page_prot);
}
-static int dma_nommu_map_sg(struct device *dev, struct scatterlist *sgl,
- int nents, enum dma_data_direction direction,
- unsigned long attrs)
+int dma_nommu_map_sg(struct device *dev, struct scatterlist *sgl,
+ int nents, enum dma_data_direction direction,
+ unsigned long attrs)
{
struct scatterlist *sg;
int i;
@@ -197,7 +197,7 @@ static int dma_nommu_map_sg(struct device *dev, struct scatterlist *sgl,
return nents;
}
-static u64 dma_nommu_get_required_mask(struct device *dev)
+u64 dma_nommu_get_required_mask(struct device *dev)
{
u64 end, mask;
@@ -209,12 +209,9 @@ static u64 dma_nommu_get_required_mask(struct device *dev)
return mask;
}
-static inline dma_addr_t dma_nommu_map_page(struct device *dev,
- struct page *page,
- unsigned long offset,
- size_t size,
- enum dma_data_direction dir,
- unsigned long attrs)
+dma_addr_t dma_nommu_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir, unsigned long attrs)
{
if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
__dma_sync_page(page, offset, size, dir);
--
2.19.1
next prev parent reply other threads:[~2018-11-14 8:23 UTC|newest]
Thread overview: 181+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-14 8:22 use generic DMA mapping code in powerpc V4 Christoph Hellwig
2018-11-14 8:22 ` [PATCH 01/34] powerpc: use mm zones more sensibly Christoph Hellwig
2018-12-06 14:09 ` Christoph Hellwig
2018-12-07 12:18 ` Michael Ellerman
2018-12-07 14:09 ` Christoph Hellwig
2018-12-07 15:04 ` Christian Zigotzky
2018-11-14 8:22 ` [PATCH 02/34] powerpc: allow NOT_COHERENT_CACHE for amigaone Christoph Hellwig
2018-12-06 14:09 ` Christoph Hellwig
2018-11-14 8:22 ` [PATCH 03/34] powerpc/dma: remove the unused ARCH_HAS_DMA_MMAP_COHERENT define Christoph Hellwig
2018-12-06 14:09 ` Christoph Hellwig
2018-11-14 8:22 ` [PATCH 04/34] powerpc/dma: remove the unused ISA_DMA_THRESHOLD export Christoph Hellwig
2018-12-06 14:10 ` Christoph Hellwig
2018-11-14 8:22 ` [PATCH 05/34] powerpc/dma: remove the unused dma_iommu_ops export Christoph Hellwig
2018-12-06 14:10 ` Christoph Hellwig
2018-11-14 8:22 ` [PATCH 06/34] powerpc/dma: split the two __dma_alloc_coherent implementations Christoph Hellwig
2018-12-06 14:10 ` Christoph Hellwig
2018-11-14 8:22 ` [PATCH 07/34] powerpc/dma: remove the no-op dma_nommu_unmap_{page,sg} routines Christoph Hellwig
2018-12-06 14:10 ` [PATCH 07/34] powerpc/dma: remove the no-op dma_nommu_unmap_{page, sg} routines Christoph Hellwig
2018-11-14 8:22 ` [PATCH 08/34] powerpc/dma: untangle vio_dma_mapping_ops from dma_iommu_ops Christoph Hellwig
2018-12-06 14:10 ` Christoph Hellwig
2018-11-14 8:22 ` Christoph Hellwig [this message]
2018-11-14 8:22 ` [PATCH 10/34] powerpc/pseries: unwind dma_get_required_mask_pSeriesLP a bit Christoph Hellwig
2018-11-14 8:22 ` [PATCH 11/34] powerpc/pseries: use the generic iommu bypass code Christoph Hellwig
2018-11-14 8:22 ` [PATCH 12/34] powerpc/cell: move dma direct window setup out of dma_configure Christoph Hellwig
2018-12-09 10:23 ` Michael Ellerman
2018-12-12 14:36 ` Christoph Hellwig
2018-12-14 13:29 ` Michael Ellerman
2018-12-14 16:42 ` Christoph Hellwig
2018-11-14 8:22 ` [PATCH 13/34] powerpc/cell: use the generic iommu bypass code Christoph Hellwig
2018-11-14 8:22 ` [PATCH 14/34] powerpc/dart: remove dead cleanup code in iommu_init_early_dart Christoph Hellwig
2018-12-06 14:11 ` Christoph Hellwig
2018-11-14 8:22 ` [PATCH 15/34] powerpc/dart: use the generic iommu bypass code Christoph Hellwig
2018-11-14 8:22 ` [PATCH 16/34] powerpc/powernv: remove pnv_pci_ioda_pe_single_vendor Christoph Hellwig
2018-11-14 8:22 ` [PATCH 17/34] powerpc/powernv: remove pnv_npu_dma_set_mask Christoph Hellwig
2018-11-14 8:22 ` [PATCH 18/34] powerpc/powernv: use the generic iommu bypass code Christoph Hellwig
2018-11-14 8:22 ` [PATCH 19/34] cxl: drop the dma_set_mask callback from vphb Christoph Hellwig
2018-12-06 14:10 ` Christoph Hellwig
2018-11-14 8:23 ` [PATCH 20/34] powerpc/dma: stop overriding dma_get_required_mask Christoph Hellwig
2018-11-14 8:23 ` [PATCH 21/34] powerpc/pci: remove the dma_set_mask pci_controller ops methods Christoph Hellwig
2018-11-14 8:23 ` [PATCH 22/34] powerpc/dma: remove the iommu fallback for coherent allocations Christoph Hellwig
2018-11-14 8:23 ` [PATCH 23/34] powerpc/dma: remove get_pci_dma_ops Christoph Hellwig
2018-11-14 8:23 ` [PATCH 24/34] powerpc/dma: move pci_dma_dev_setup_swiotlb to fsl_pci.c Christoph Hellwig
2018-11-14 8:23 ` [PATCH 25/34] powerpc/dma: remove max_direct_dma_addr Christoph Hellwig
2018-11-14 8:23 ` [PATCH 26/34] powerpc/dma: fix an off-by-one in dma_capable Christoph Hellwig
2018-11-14 8:23 ` [PATCH 27/34] powerpc/fsl_pci: simplify fsl_pci_dma_set_mask Christoph Hellwig
2018-11-14 8:23 ` [PATCH 28/34] dma-mapping, powerpc: simplify the arch dma_set_mask override Christoph Hellwig
2018-11-14 8:23 ` [PATCH 29/34] powerpc/dma: use phys_to_dma instead of get_dma_offset Christoph Hellwig
2018-11-14 8:23 ` [PATCH 30/34] powerpc/dma: remove dma_nommu_mmap_coherent Christoph Hellwig
2018-11-14 8:23 ` [PATCH 31/34] powerpc/dma: use generic direct and swiotlb ops Christoph Hellwig
2018-11-14 8:23 ` [PATCH 32/34] powerpc/dma: remove get_dma_offset Christoph Hellwig
2018-11-14 8:23 ` [PATCH 33/34] powerpc/dma: remove set_dma_offset Christoph Hellwig
2018-11-14 8:23 ` [PATCH 34/34] powerpc/dma: trim the fat from <asm/dma-mapping.h> Christoph Hellwig
2018-11-27 7:42 ` use generic DMA mapping code in powerpc V4 Christoph Hellwig
2018-11-27 22:05 ` Benjamin Herrenschmidt
2018-11-28 11:05 ` Michael Ellerman
2018-11-28 15:55 ` Christian Zigotzky
2018-11-28 20:02 ` Christian Zigotzky
2018-11-28 20:35 ` Michal Suchánek
2018-11-29 17:03 ` Christoph Hellwig
2019-12-19 13:54 ` Christian Zigotzky
2018-11-29 12:05 ` Christian Zigotzky
2018-11-29 15:30 ` Christian Zigotzky
2018-11-29 17:03 ` Christoph Hellwig
2018-11-29 23:07 ` Christian Zigotzky
2018-11-30 10:53 ` Christoph Hellwig
2018-11-30 12:23 ` Christian Zigotzky
2018-11-30 13:10 ` Christoph Hellwig
2018-11-30 15:29 ` Christian Zigotzky
2018-12-04 7:31 ` Christian Zigotzky
2018-12-04 9:53 ` Christian Zigotzky
2018-12-04 14:24 ` Christoph Hellwig
2018-12-05 9:44 ` Christian Zigotzky
2018-12-05 14:05 ` Christoph Hellwig
2018-12-06 10:55 ` Christian Zigotzky
2018-12-06 17:10 ` Christian Zigotzky
2018-12-06 19:36 ` Christoph Hellwig
2018-12-07 7:48 ` Christian Zigotzky
2018-12-07 13:45 ` Christian Zigotzky
2018-12-07 18:33 ` Christian Zigotzky
2018-12-08 10:29 ` Christian Zigotzky
2018-12-08 13:47 ` Christian Zigotzky
2018-12-09 14:20 ` Christian Zigotzky
2018-12-09 18:26 ` Christian Zigotzky
2018-12-10 15:54 ` Christian Zigotzky
2018-12-11 14:28 ` Christian Zigotzky
2018-12-11 18:17 ` Christian Zigotzky
2018-12-12 0:47 ` Benjamin Herrenschmidt
2018-12-12 7:03 ` Christian Zigotzky
2018-12-12 14:15 ` Christoph Hellwig
2018-12-12 14:39 ` Christian Zigotzky
2018-12-13 8:41 ` Christian Zigotzky
2018-12-13 9:10 ` Christoph Hellwig
2018-12-13 9:47 ` Christian Zigotzky
2018-12-13 11:19 ` Christian Zigotzky
2018-12-13 11:25 ` Christoph Hellwig
2018-12-13 13:34 ` Christian Zigotzky
2018-12-13 17:48 ` Christian Zigotzky
2018-12-13 21:53 ` Christian Zigotzky
2018-12-14 12:00 ` Christian Zigotzky
2018-12-14 16:45 ` Christoph Hellwig
2019-01-03 7:36 ` Christoph Hellwig
2019-01-03 19:26 ` Christian Zigotzky
2019-01-05 16:03 ` Christian Zigotzky
2019-01-09 9:31 ` Christian Zigotzky
2019-01-11 2:10 ` Christian Zigotzky
2019-01-12 18:14 ` Christian Zigotzky
2019-01-15 8:07 ` Christian Zigotzky
2019-01-15 8:49 ` Christian Zigotzky
2019-01-15 10:55 ` Christian Zigotzky
2019-01-15 13:35 ` Christoph Hellwig
2019-01-15 13:56 ` Christian Zigotzky
2019-01-15 15:17 ` Christoph Hellwig
2019-01-17 9:21 ` Christian Zigotzky
2019-01-17 9:31 ` Christoph Hellwig
2019-01-17 9:44 ` Christian Zigotzky
2019-01-18 8:35 ` Christoph Hellwig
2019-01-18 11:10 ` Christian Zigotzky
2019-01-18 11:28 ` Christoph Hellwig
2019-01-18 12:07 ` Christian Zigotzky
2019-01-18 12:18 ` Christoph Hellwig
2019-01-18 12:46 ` Christian Zigotzky
2019-01-18 12:55 ` Christoph Hellwig
2019-01-18 15:06 ` Christian Zigotzky
2019-01-19 11:40 ` Christian Zigotzky
2019-01-19 11:52 ` Christian Zigotzky
2019-01-19 13:02 ` Christoph Hellwig
2019-01-19 14:04 ` Christoph Hellwig
2019-01-21 14:38 ` Christian Zigotzky
2019-01-23 14:34 ` Christian Zigotzky
2019-01-25 13:37 ` Christian Zigotzky
2019-01-27 13:13 ` Christian Zigotzky
2019-01-28 7:04 ` Christoph Hellwig
[not found] ` <20190128070422.GA2772-jcswGhMUV9g@public.gmane.org>
2019-01-28 16:22 ` Christoph Hellwig
2019-01-28 16:22 ` Christoph Hellwig
2019-01-28 16:52 ` Christian Zigotzky
2019-01-28 16:52 ` Christian Zigotzky
2019-01-29 15:03 ` Christian Zigotzky
2019-01-29 16:14 ` Christoph Hellwig
2019-01-29 16:34 ` Christoph Hellwig
2019-01-30 4:40 ` Christian Zigotzky
2019-01-31 12:48 ` Christian Zigotzky
2019-02-01 8:04 ` Christoph Hellwig
2019-02-01 16:54 ` Christian Zigotzky
2019-02-03 16:49 ` Christian Zigotzky
2019-02-04 7:56 ` Christoph Hellwig
2019-02-04 12:13 ` Christian Zigotzky
2019-02-04 12:38 ` Christoph Hellwig
2019-02-06 13:45 ` Christian Zigotzky
2019-02-06 15:15 ` Christoph Hellwig
2019-02-06 15:16 ` Christoph Hellwig
2019-02-07 4:34 ` Christian Zigotzky
2019-02-08 9:01 ` Christian Zigotzky
2019-02-08 9:18 ` Christoph Hellwig
2019-02-08 10:59 ` Christian Zigotzky
2019-02-10 12:00 ` Christian Zigotzky
2019-02-11 7:16 ` Christian Zigotzky
2019-02-11 7:21 ` Christian Zigotzky
2019-02-11 7:38 ` Christoph Hellwig
2019-02-12 12:42 ` Christian Zigotzky
2019-02-12 15:25 ` Christoph Hellwig
2019-02-12 19:31 ` Christian Zigotzky
2019-02-12 19:50 ` Christian Zigotzky
2019-02-12 19:52 ` Christoph Hellwig
2019-11-05 7:56 ` Bug 205201 - overflow of DMA mask and bus mask Christian Zigotzky
2019-11-05 16:28 ` Christoph Hellwig
2019-11-06 14:09 ` Robin Murphy
2019-11-21 17:26 ` Christoph Hellwig
2019-11-07 9:53 ` Christian Zigotzky
2019-11-10 7:27 ` Christian Zigotzky
2019-11-11 8:12 ` Christian Zigotzky
2019-11-11 8:16 ` Christian Zigotzky
2019-11-11 12:22 ` Christian Zigotzky
2019-11-12 14:41 ` Christoph Hellwig
2019-11-12 22:58 ` Christian Zigotzky
2019-11-13 10:14 ` Christian Zigotzky
2019-11-13 11:02 ` Christoph Hellwig
2018-11-29 17:02 ` use generic DMA mapping code in powerpc V4 Christoph Hellwig
2018-11-30 3:17 ` Benjamin Herrenschmidt
2018-12-08 17:03 ` Christoph Hellwig
2018-12-16 16:51 ` Christoph Hellwig
2018-12-17 1:14 ` Michael Ellerman
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