From: yang.shi@linaro•org (Shi, Yang)
To: linux-arm-kernel@lists•infradead.org
Subject: SMMU problem found on LS2085A with 4.6-rc3
Date: Wed, 13 Apr 2016 12:31:53 -0700 [thread overview]
Message-ID: <570E9EA9.2070903@linaro.org> (raw)
Hi Will & Robin,
I just ran some quick test on my LS2085A board, which has 8 Cortex A57
cores, with 4.6-rc3 kernel, but I found a regression issue with SMMU.
SMMU driver reports:
arm_smmu_global_fault: 297974 callbacks suppressed
arm_smmu_global_fault: 298561 callbacks suppressed
arm-smmu 5000000.iommu: GFSR 0x80000004, GFSYNR0 0x00000008,
GFSYNR1 0x00000300, GFSYNR2 0x00000000
arm-smmu 5000000.iommu: GFSR 0x80000004, GFSYNR0 0x00000008,
GFSYNR1 0x00000300, GFSYNR2 0x00000000
arm-smmu 5000000.iommu: GFSR 0x80000004, GFSYNR0 0x00000008,
GFSYNR1 0x00000300, GFSYNR2 0x00000000
arm-smmu 5000000.iommu: GFSR 0x80000004, GFSYNR0 0x00000008,
GFSYNR1 0x00000300, GFSYNR2 0x00000000
arm-smmu 5000000.iommu: GFSR 0x80000004, GFSYNR0 0x00000008,
GFSYNR1 0x00000300, GFSYNR2 0x00000000
arm-smmu 5000000.iommu: GFSR 0x80000004, GFSYNR0 0x00000008,
GFSYNR1 0x00000300, GFSYNR2 0x00000000
arm-smmu 5000000.iommu: GFSR 0x80000004, GFSYNR0 0x00000008,
GFSYNR1 0x00000300, GFSYNR2 0x00000000
arm-smmu 5000000.iommu: GFSR 0x80000004, GFSYNR0 0x00000008,
GFSYNR1 0x00000300, GFSYNR2 0x00000000
arm-smmu 5000000.iommu: GFSR 0x80000004, GFSYNR0 0x00000008,
GFSYNR1 0x00000300, GFSYNR2 0x00000000
arm-smmu 5000000.iommu: GFSR 0x80000004, GFSYNR0 0x00000008,
GFSYNR1 0x00000300, GFSYNR2 0x00000000
arm-smmu 5000000.iommu: Unexpected global fault, this could be serious
arm-smmu 5000000.iommu: Unexpected global fault, this could be serious
arm-smmu 5000000.iommu: Unexpected global fault, this could be serious
arm-smmu 5000000.iommu: Unexpected global fault, this could be serious
arm-smmu 5000000.iommu: Unexpected global fault, this could be serious
arm-smmu 5000000.iommu: Unexpected global fault, this could be serious
arm-smmu 5000000.iommu: Unexpected global fault, this could be serious
arm-smmu 5000000.iommu: Unexpected global fault, this could be serious
arm-smmu 5000000.iommu: Unexpected global fault, this could be serious
arm-smmu 5000000.iommu: Unexpected global fault, this could be serious
But, it is good with 4.5 kernel. I found the below commit causes it:
commit 9adb95949a343dac53b1cd81dc973b5f815c88d4
Author: Robin Murphy <robin.murphy@arm•com>
Date: Tue Jan 26 18:06:36 2016 +0000
iommu/arm-smmu: Support DMA-API domains
With DMA mapping ops provided by the iommu-dma code, only a minimal
contribution from the IOMMU driver is needed to create a suitable
DMA-API domain for them to use. Implement this for the ARM SMMUs.
Signed-off-by: Robin Murphy <robin.murphy@arm•com>
Signed-off-by: Will Deacon <will.deacon@arm•com>
Any idea?
Thanks,
Yang
next reply other threads:[~2016-04-13 19:31 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-13 19:31 Shi, Yang [this message]
2016-04-14 12:04 ` SMMU problem found on LS2085A with 4.6-rc3 Robin Murphy
2016-04-14 23:07 ` Shi, Yang
2016-04-15 12:30 ` Robin Murphy
2016-04-15 17:19 ` Shi, Yang
2016-04-15 17:44 ` Robin Murphy
2016-04-15 17:55 ` Shi, Yang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=570E9EA9.2070903@linaro.org \
--to=yang.shi@linaro$(echo .)org \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox