From: Christoph Hellwig <hch@infradead.org>
To: Christoph Hellwig <hch@lst.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
linux-arch@vger.kernel.org, linux-mm@kvack.org,
iommu@lists.linux-foundation.org, linuxppc-dev@lists.ozlabs.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 01/34] powerpc: use mm zones more sensibly
Date: Thu, 6 Dec 2018 06:09:48 -0800 [thread overview]
Message-ID: <20181206140948.GB29741@infradead.org> (raw)
In-Reply-To: <20181114082314.8965-2-hch@lst.de>
Ben / Michael,
can we get this one queued up for 4.21 to prepare for the DMA work later
on?
On Wed, Nov 14, 2018 at 09:22:41AM +0100, Christoph Hellwig wrote:
> Powerpc has somewhat odd usage where ZONE_DMA is used for all memory on
> common 64-bit configfs, and ZONE_DMA32 is used for 31-bit schemes.
>
> Move to a scheme closer to what other architectures use (and I dare to
> say the intent of the system):
>
> - ZONE_DMA: optionally for memory < 31-bit (64-bit embedded only)
> - ZONE_NORMAL: everything addressable by the kernel
> - ZONE_HIGHMEM: memory > 32-bit for 32-bit kernels
>
> Also provide information on how ZONE_DMA is used by defining
> ARCH_ZONE_DMA_BITS.
>
> Contains various fixes from Benjamin Herrenschmidt.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
> arch/powerpc/Kconfig | 8 +---
> arch/powerpc/include/asm/page.h | 2 +
> arch/powerpc/include/asm/pgtable.h | 1 -
> arch/powerpc/kernel/dma-swiotlb.c | 6 +--
> arch/powerpc/kernel/dma.c | 7 +--
> arch/powerpc/mm/mem.c | 47 +++++++------------
> arch/powerpc/platforms/85xx/corenet_generic.c | 10 ----
> arch/powerpc/platforms/85xx/qemu_e500.c | 9 ----
> include/linux/mmzone.h | 2 +-
> 9 files changed, 25 insertions(+), 67 deletions(-)
>
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index 8be31261aec8..cffff3613bc1 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -374,9 +374,9 @@ config PPC_ADV_DEBUG_DAC_RANGE
> depends on PPC_ADV_DEBUG_REGS && 44x
> default y
>
> -config ZONE_DMA32
> +config ZONE_DMA
> bool
> - default y if PPC64
> + default y if PPC_BOOK3E_64
>
> config PGTABLE_LEVELS
> int
> @@ -869,10 +869,6 @@ config ISA
> have an IBM RS/6000 or pSeries machine, say Y. If you have an
> embedded board, consult your board documentation.
>
> -config ZONE_DMA
> - bool
> - default y
> -
> config GENERIC_ISA_DMA
> bool
> depends on ISA_DMA_API
> diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h
> index f6a1265face2..fc8c9ac0c6be 100644
> --- a/arch/powerpc/include/asm/page.h
> +++ b/arch/powerpc/include/asm/page.h
> @@ -354,4 +354,6 @@ typedef struct page *pgtable_t;
> #endif /* __ASSEMBLY__ */
> #include <asm/slice.h>
>
> +#define ARCH_ZONE_DMA_BITS 31
> +
> #endif /* _ASM_POWERPC_PAGE_H */
> diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h
> index 9679b7519a35..8af32ce93c7f 100644
> --- a/arch/powerpc/include/asm/pgtable.h
> +++ b/arch/powerpc/include/asm/pgtable.h
> @@ -66,7 +66,6 @@ extern unsigned long empty_zero_page[];
>
> extern pgd_t swapper_pg_dir[];
>
> -void limit_zone_pfn(enum zone_type zone, unsigned long max_pfn);
> int dma_pfn_limit_to_zone(u64 pfn_limit);
> extern void paging_init(void);
>
> diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c
> index 5fc335f4d9cd..678811abccfc 100644
> --- a/arch/powerpc/kernel/dma-swiotlb.c
> +++ b/arch/powerpc/kernel/dma-swiotlb.c
> @@ -108,12 +108,8 @@ int __init swiotlb_setup_bus_notifier(void)
>
> void __init swiotlb_detect_4g(void)
> {
> - if ((memblock_end_of_DRAM() - 1) > 0xffffffff) {
> + if ((memblock_end_of_DRAM() - 1) > 0xffffffff)
> ppc_swiotlb_enable = 1;
> -#ifdef CONFIG_ZONE_DMA32
> - limit_zone_pfn(ZONE_DMA32, (1ULL << 32) >> PAGE_SHIFT);
> -#endif
> - }
> }
>
> static int __init check_swiotlb_enabled(void)
> diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c
> index dbfc7056d7df..6551685a4ed0 100644
> --- a/arch/powerpc/kernel/dma.c
> +++ b/arch/powerpc/kernel/dma.c
> @@ -50,7 +50,7 @@ static int dma_nommu_dma_supported(struct device *dev, u64 mask)
> return 1;
>
> #ifdef CONFIG_FSL_SOC
> - /* Freescale gets another chance via ZONE_DMA/ZONE_DMA32, however
> + /* Freescale gets another chance via ZONE_DMA, however
> * that will have to be refined if/when they support iommus
> */
> return 1;
> @@ -94,13 +94,10 @@ void *__dma_nommu_alloc_coherent(struct device *dev, size_t size,
> }
>
> switch (zone) {
> +#ifdef CONFIG_ZONE_DMA
> case ZONE_DMA:
> flag |= GFP_DMA;
> break;
> -#ifdef CONFIG_ZONE_DMA32
> - case ZONE_DMA32:
> - flag |= GFP_DMA32;
> - break;
> #endif
> };
> #endif /* CONFIG_FSL_SOC */
> diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
> index 0a64fffabee1..c0b676c3a5ba 100644
> --- a/arch/powerpc/mm/mem.c
> +++ b/arch/powerpc/mm/mem.c
> @@ -246,35 +246,19 @@ static int __init mark_nonram_nosave(void)
> }
> #endif
>
> -static bool zone_limits_final;
> -
> /*
> - * The memory zones past TOP_ZONE are managed by generic mm code.
> - * These should be set to zero since that's what every other
> - * architecture does.
> + * Zones usage:
> + *
> + * We setup ZONE_DMA to be 31-bits on all platforms and ZONE_NORMAL to be
> + * everything else. GFP_DMA32 page allocations automatically fall back to
> + * ZONE_DMA.
> + *
> + * By using 31-bit unconditionally, we can exploit ARCH_ZONE_DMA_BITS to
> + * inform the generic DMA mapping code. 32-bit only devices (if not handled
> + * by an IOMMU anyway) will take a first dip into ZONE_NORMAL and get
> + * otherwise served by ZONE_DMA.
> */
> -static unsigned long max_zone_pfns[MAX_NR_ZONES] = {
> - [0 ... TOP_ZONE ] = ~0UL,
> - [TOP_ZONE + 1 ... MAX_NR_ZONES - 1] = 0
> -};
> -
> -/*
> - * Restrict the specified zone and all more restrictive zones
> - * to be below the specified pfn. May not be called after
> - * paging_init().
> - */
> -void __init limit_zone_pfn(enum zone_type zone, unsigned long pfn_limit)
> -{
> - int i;
> -
> - if (WARN_ON(zone_limits_final))
> - return;
> -
> - for (i = zone; i >= 0; i--) {
> - if (max_zone_pfns[i] > pfn_limit)
> - max_zone_pfns[i] = pfn_limit;
> - }
> -}
> +static unsigned long max_zone_pfns[MAX_NR_ZONES];
>
> /*
> * Find the least restrictive zone that is entirely below the
> @@ -324,11 +308,14 @@ void __init paging_init(void)
> printk(KERN_DEBUG "Memory hole size: %ldMB\n",
> (long int)((top_of_ram - total_ram) >> 20));
>
> +#ifdef CONFIG_ZONE_DMA
> + max_zone_pfns[ZONE_DMA] = min(max_low_pfn, 0x7fffffffUL >> PAGE_SHIFT);
> +#endif
> + max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
> #ifdef CONFIG_HIGHMEM
> - limit_zone_pfn(ZONE_NORMAL, lowmem_end_addr >> PAGE_SHIFT);
> + max_zone_pfns[ZONE_HIGHMEM] = max_pfn;
> #endif
> - limit_zone_pfn(TOP_ZONE, top_of_ram >> PAGE_SHIFT);
> - zone_limits_final = true;
> +
> free_area_init_nodes(max_zone_pfns);
>
> mark_nonram_nosave();
> diff --git a/arch/powerpc/platforms/85xx/corenet_generic.c b/arch/powerpc/platforms/85xx/corenet_generic.c
> index ac191a7a1337..b0dac307bebf 100644
> --- a/arch/powerpc/platforms/85xx/corenet_generic.c
> +++ b/arch/powerpc/platforms/85xx/corenet_generic.c
> @@ -68,16 +68,6 @@ void __init corenet_gen_setup_arch(void)
>
> swiotlb_detect_4g();
>
> -#if defined(CONFIG_FSL_PCI) && defined(CONFIG_ZONE_DMA32)
> - /*
> - * Inbound windows don't cover the full lower 4 GiB
> - * due to conflicts with PCICSRBAR and outbound windows,
> - * so limit the DMA32 zone to 2 GiB, to allow consistent
> - * allocations to succeed.
> - */
> - limit_zone_pfn(ZONE_DMA32, 1UL << (31 - PAGE_SHIFT));
> -#endif
> -
> pr_info("%s board\n", ppc_md.name);
>
> mpc85xx_qe_init();
> diff --git a/arch/powerpc/platforms/85xx/qemu_e500.c b/arch/powerpc/platforms/85xx/qemu_e500.c
> index b63a8548366f..27631c607f3d 100644
> --- a/arch/powerpc/platforms/85xx/qemu_e500.c
> +++ b/arch/powerpc/platforms/85xx/qemu_e500.c
> @@ -45,15 +45,6 @@ static void __init qemu_e500_setup_arch(void)
>
> fsl_pci_assign_primary();
> swiotlb_detect_4g();
> -#if defined(CONFIG_FSL_PCI) && defined(CONFIG_ZONE_DMA32)
> - /*
> - * Inbound windows don't cover the full lower 4 GiB
> - * due to conflicts with PCICSRBAR and outbound windows,
> - * so limit the DMA32 zone to 2 GiB, to allow consistent
> - * allocations to succeed.
> - */
> - limit_zone_pfn(ZONE_DMA32, 1UL << (31 - PAGE_SHIFT));
> -#endif
> mpc85xx_smp_init();
> }
>
> diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
> index 847705a6d0ec..e2d01ccd071d 100644
> --- a/include/linux/mmzone.h
> +++ b/include/linux/mmzone.h
> @@ -314,7 +314,7 @@ enum zone_type {
> * Architecture Limit
> * ---------------------------
> * parisc, ia64, sparc <4G
> - * s390 <2G
> + * s390, powerpc <2G
> * arm Various
> * alpha Unlimited or 0-16MB.
> *
> --
> 2.19.1
>
> _______________________________________________
> iommu mailing list
> iommu@lists.linux-foundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/iommu
---end quoted text---
next prev parent reply other threads:[~2018-12-06 14:09 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 [this message]
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 ` [PATCH 09/34] powerpc/dma: handle iommu bypass in dma_iommu_ops Christoph Hellwig
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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