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From: Michael Ellerman <mpe@ellerman.id.au>
To: Christoph Hellwig <hch@infradead.org>, Christoph Hellwig <hch@lst.de>
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org, iommu@lists.linux-foundation.org,
	Paul Mackerras <paulus@samba.org>,
	linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 01/34] powerpc: use mm zones more sensibly
Date: Fri, 07 Dec 2018 23:18:18 +1100
Message-ID: <87sgz9jzsl.fsf@concordia.ellerman.id.au> (raw)
In-Reply-To: <20181206140948.GB29741@infradead.org>

Christoph Hellwig <hch@infradead.org> writes:

> Ben / Michael,
>
> can we get this one queued up for 4.21 to prepare for the DMA work later
> on?

I was hoping the PASEMI / NXP regressions could be solved before
merging.

My p5020ds is booting fine with this series, so I'm not sure why it's
causing problems on Christian's machine.

The last time I turned on my PASEMI board it tripped some breakers, so I
need to investigate that before I can help test that.

I'll see how things look on Monday and either merge the commits you
identified or the whole series depending on if there's any more info
from Christian.

cheers

> 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---

  reply index

Thread overview: 175+ 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 [this message]
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   ` 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
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
2019-01-28 16:22                                                                                                                                   ` Christoph Hellwig
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
2019-02-09 19:26                                                                                                                                                                         ` Darren Stevens
2019-02-09 21:10                                                                                                                                                                         ` Darren Stevens
2019-02-11  7:41                                                                                                                                                                           ` Christoph Hellwig
2019-02-10 12:00                                                                                                                                                                         ` Christian Zigotzky
     [not found]                                                                                                                                                                           ` <0042290A-2939-4EBA-A638-D404FA2055ED@xenosoft.de>
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
     [not found]                                                                               ` <46025f1b-db20-ac23-7dcd-10bc43bbb6ee@xenosoft.de>
     [not found]                                                                                 ` <20191105162856.GA15402@lst.de>
2019-11-07  9:53                                                                                   ` Bug 205201 - overflow of DMA mask and bus mask 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
2018-12-08 17:03 ` Christoph Hellwig
2018-12-16 16:51 ` Christoph Hellwig
2018-12-17  1:14   ` Michael Ellerman

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