lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Wed, 6 Jan 2021 09:14:22 +0800
From:   Lu Baolu <>
To:     Will Deacon <>
Cc:, Joerg Roedel <>,
        Ashok Raj <>,
        Jacob Pan <>,
        Guo Kaijie <>,
        Liu Yi L <>,,
Subject: Re: [PATCH 3/5] iommu/vt-d: Remove unused dma map/unmap trace events

Hi Will,

On 2021/1/6 3:04, Will Deacon wrote:
> On Thu, Dec 31, 2020 at 08:53:21AM +0800, Lu Baolu wrote:
>> With commit c588072bba6b5 ("iommu/vt-d: Convert intel iommu driver to
>> the iommu ops"), the trace events for dma map/unmap have no users any
>> more. Remove them so that they don't show up under
>> /sys/kernel/debug/tracing/events/intel_iommu. The users should use the
>> map/unmap traces defined in the iommu core from now on.
>> Fixes: c588072bba6b5 ("iommu/vt-d: Convert intel iommu driver to the iommu ops")
>> Signed-off-by: Lu Baolu <>
>> ---
>>   include/trace/events/intel_iommu.h | 119 -----------------------------
>>   1 file changed, 119 deletions(-)
> Is this needed in 5.11, or can it wait until 5.12?

It's necessary for 5.11 as far as I can see. Without this, users still
see the events under /sys/kernel/debug/tracing/events/intel_iommu, but
they will get nothing traced even they enable the events.

> Will

Best regards,

Powered by blists - more mailing lists