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Re: [Qemu-devel] [PATCH 0/2] ccw interpretation AR compliance improvemen

From: Halil Pasic
Subject: Re: [Qemu-devel] [PATCH 0/2] ccw interpretation AR compliance improvements
Date: Thu, 27 Jul 2017 15:18:01 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.0

[Re-posting my previous reply because I've accidentally
dropped almost all addresses.]

On 07/27/2017 10:26 AM, Cornelia Huck wrote:
> On Wed, 26 Jul 2017 00:44:40 +0200
> Halil Pasic <address@hidden> wrote:
>> There were some missing checks. There might be some more missing.  For 
>> details,
>> see the individual patches.
> The checks are not perfect? Colour me shocked ;)

With a fedora or without ;)?

>> Regarding testing: did not do much more than a simple smoke test
>> with virtio-ccw.
> I think we need a way to throw random channel programs at a channel
> device...

By random do you mean random random, or do you mean carefully crafted
to provoke (and verify) certain responses. If it's more like the second
case I've actually wrote something (a kernel driver) for 'internal use'
but at the moment it's limited to indirect data access support (no test
cases for invalid invalid channel programs). The 'internal guys' say it
probably ain't interesting for the rest of the world make this external,
but if you are interested I could send you the patch these days.


>> Halil Pasic (2):
>>   s390x/css: check ccw address validity
>>   s390x/css: fix bits must be zero check for TIC
>>  hw/s390x/css.c | 21 ++++++++++++++++++++-
>>  1 file changed, 20 insertions(+), 1 deletion(-)

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