Baolu:
Yes, it is a generic issue for hotplug devices with current Intel IOMMU driver,
as reported in this thread as well.
The patch you provided does the job in our case. Please update this thread once
your patch is merged. Thanks.
Best Regards,
James
On 2/23/19 12:56 AM, Lu Baolu wrote
>
>
Baolu:
The reproduction depends on devices. HW passthrough PCIe devices with default
identity map could have the issue. Make sure that messages like following came
out in dmesg and their mapping does not change after booting:
[ 10.167809] DMAR: Hardware identity mapping for device
Baolu:
Sorry that my last reply email seems not text format. Resend it now.
Thanks for your comments and your patch. Please find below our responses to
each of your comments:
> What does "I/O operation won't work" exactly mean here? Do you see any
> IOMMU fault message? Or, something doesn't
in their default
domain after such hotplug devices are rescanned.
Signed-off-by: James Dong
Reported-by: Jis Ben
---
drivers/iommu/intel-iommu.c | 14 +-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
in
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