From: thunder.leizhen@huawei.com (leizhen)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 7/8] iommu/arm-smmu: enlarge STRTAB_L1_SZ_SHIFT to support larger sidsize
Date: Tue, 30 Jun 2015 16:57:33 +0800 [thread overview]
Message-ID: <559259FD.6070000@huawei.com> (raw)
In-Reply-To: <20150629173539.GM17474@arm.com>
On 2015/6/30 1:35, Will Deacon wrote:
> On Fri, Jun 26, 2015 at 09:33:03AM +0100, Zhen Lei wrote:
>> Because we will choose the minimum value between STRTAB_L1_SZ_SHIFT and
>> IDR1.SIDSIZE, so enlarge STRTAB_L1_SZ_SHIFT will not impact the platforms
>> whose IDR1.SIDSIZE is smaller than old STRTAB_L1_SZ_SHIFT value.
>>
>> Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
>> ---
>> drivers/iommu/arm-smmu-v3.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
>> index 87c3d9b..d799feb 100644
>> --- a/drivers/iommu/arm-smmu-v3.c
>> +++ b/drivers/iommu/arm-smmu-v3.c
>> @@ -206,7 +206,7 @@
>> * Linear: Enough to cover 1 << IDR1.SIDSIZE entries
>> * 2lvl: 8k L1 entries, 256 lazy entries per table (each table covers a PCI bus)
>> */
>> -#define STRTAB_L1_SZ_SHIFT 16
>> +#define STRTAB_L1_SZ_SHIFT 20
>> #define STRTAB_SPLIT 8
>>
>> #define STRTAB_L1_DESC_DWORDS 1
>
> Can you update the comment too, please, to say that we now have 128k entries
> at level 1?
OK, no problem.
>
> Will
>
> .
>
next prev parent reply other threads:[~2015-06-30 8:57 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-26 8:32 [PATCH 0/8] iommu/arm-smmu: bugfixs and add support for non-pci devices Zhen Lei
2015-06-26 8:32 ` [PATCH 1/8] iommu/arm-smmu: fix the assignment of log2size field Zhen Lei
2015-06-29 17:05 ` Will Deacon
2015-06-30 3:47 ` leizhen
2015-06-26 8:32 ` [PATCH 2/8] iommu/arm-smmu: fix the index calculation of strtab Zhen Lei
2015-06-29 17:17 ` Will Deacon
2015-06-26 8:32 ` [PATCH 3/8] iommu/arm-smmu: fix the values of ARM64_TCR_IRGN0_SHIFT and ARM64_TCR_ORGN0_SHIFT Zhen Lei
2015-06-29 17:25 ` Will Deacon
2015-06-30 3:57 ` leizhen
2015-06-30 14:11 ` Will Deacon
2015-06-26 8:33 ` [PATCH 4/8] iommu/arm-smmu: set EPD1 to disable TT1 translation table walk Zhen Lei
2015-06-29 17:26 ` Will Deacon
2015-06-30 4:40 ` leizhen
2015-06-26 8:33 ` [PATCH 5/8] iommu/arm-smmu: rename __arm_smmu_get_pci_sid Zhen Lei
2015-06-26 8:33 ` [PATCH 6/8] iommu/arm-smmu: add support for non-pci devices Zhen Lei
2015-06-29 17:28 ` Will Deacon
2015-06-30 8:51 ` leizhen
2015-06-30 11:26 ` Robin Murphy
2015-07-01 2:16 ` leizhen
2015-06-26 8:33 ` [PATCH 7/8] iommu/arm-smmu: enlarge STRTAB_L1_SZ_SHIFT to support larger sidsize Zhen Lei
2015-06-29 17:35 ` Will Deacon
2015-06-30 8:57 ` leizhen [this message]
2015-06-26 8:33 ` [PATCH 8/8] iommu/arm-smmu: suppress fault information about CMD_PREFETCH_CONFIG execution Zhen Lei
2015-06-29 17:49 ` Will Deacon
2015-06-30 9:18 ` leizhen
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