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Groups > linux.kernel > #1693506
| From | Baoquan He <bhe@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v8 13/13] iommu/amd: Disable iommu only if amd_iommu=off is specified |
| Date | 2017-07-21 11:10 +0200 |
| Message-ID | <u5C6F-2US-67@gated-at.bofh.it> (permalink) |
| References | <u5BWV-2C2-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: root <root@amd-dinar-02.lab.bos.redhat.com> It's ok to disable iommu in normal kernel. While there's no need to disable it in kdump kernel after the on-flight dma issue has heen fixed. Signed-off-by: Baoquan He <bhe@redhat.com> --- drivers/iommu/amd_iommu_init.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index 8b4bac978062..880f693c809b 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -2494,7 +2494,8 @@ static int __init early_amd_iommu_init(void) goto out; /* Disable any previously enabled IOMMUs */ - disable_iommus(); + if (amd_iommu_disabled) + disable_iommus(); if (amd_iommu_irq_remap) amd_iommu_irq_remap = check_ioapic_information(); -- 2.5.5
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[PATCH v8 00/13] Fix the on-flight DMA issue on system with amd iommu Baoquan He <bhe@redhat.com> - 2017-07-21 11:00 +0200
[PATCH v8 05/13] iommu/amd: Add function copy_dev_tables() Baoquan He <bhe@redhat.com> - 2017-07-21 11:00 +0200
Re: [PATCH v8 05/13] iommu/amd: Add function copy_dev_tables() Joerg Roedel <jroedel@suse.de> - 2017-07-27 17:30 +0200
Re: [PATCH v8 05/13] iommu/amd: Add function copy_dev_tables() Baoquan He <bhe@redhat.com> - 2017-07-28 06:00 +0200
[PATCH v8 06/13] iommu/amd: copy old trans table from old kernel Baoquan He <bhe@redhat.com> - 2017-07-21 11:00 +0200
Re: [PATCH v8 06/13] iommu/amd: copy old trans table from old kernel Joerg Roedel <jroedel@suse.de> - 2017-07-27 17:40 +0200
Re: [PATCH v8 06/13] iommu/amd: copy old trans table from old kernel Baoquan He <bhe@redhat.com> - 2017-07-28 09:00 +0200
[PATCH v8 12/13] iommu/amd: Clear out the GV flag when handle deferred domain attach Baoquan He <bhe@redhat.com> - 2017-07-21 11:10 +0200
[PATCH v8 07/13] iommu/amd: Do sanity check for irq remap of old dev table entry Baoquan He <bhe@redhat.com> - 2017-07-21 11:10 +0200
[PATCH v8 11/13] iommu/amd: Don't copy GCR3 table root pointer Baoquan He <bhe@redhat.com> - 2017-07-21 11:10 +0200
Re: [PATCH v8 11/13] iommu/amd: Don't copy GCR3 table root pointer Baoquan He <bhe@redhat.com> - 2017-07-24 02:00 +0200
Re: [PATCH v8 11/13] iommu/amd: Don't copy GCR3 table root pointer Joerg Roedel <jroedel@suse.de> - 2017-07-27 18:00 +0200
Re: [PATCH v8 11/13] iommu/amd: Don't copy GCR3 table root pointer Baoquan He <bhe@redhat.com> - 2017-07-28 11:10 +0200
[PATCH v8 09/13] iommu/amd: Use is_attach_deferred call-back Baoquan He <bhe@redhat.com> - 2017-07-21 11:10 +0200
Re: [PATCH v8 09/13] iommu/amd: Use is_attach_deferred call-back Joerg Roedel <jroedel@suse.de> - 2017-07-27 18:00 +0200
Re: [PATCH v8 09/13] iommu/amd: Use is_attach_deferred call-back Baoquan He <bhe@redhat.com> - 2017-07-28 06:10 +0200
[PATCH v8 13/13] iommu/amd: Disable iommu only if amd_iommu=off is specified Baoquan He <bhe@redhat.com> - 2017-07-21 11:10 +0200
Re: [PATCH v8 13/13] iommu/amd: Disable iommu only if amd_iommu=off is specified Joerg Roedel <jroedel@suse.de> - 2017-07-27 18:00 +0200
Re: [PATCH v8 13/13] iommu/amd: Disable iommu only if amd_iommu=off is specified Baoquan He <bhe@redhat.com> - 2017-07-28 11:10 +0200
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