Re: [ros-diffs] [ion] 15196: Reuse buffer in IopQueryNameFile, since it's temporary and the first one we allocate is already large enough. Also block out SEH in ntread/write file since it seems to crash some user mode code.

[Alex Ionescu]

Thomas Weidenmueller wrote:

>  Hartmut Birr wrote:
>   
>
> >  Do you know the error status? IoStatusBlock
> > doesn't need a alignment of
> > 4 bytes.
> >     
> >  
> This actually applies to many other things, most pointers to variables
> <= 4 bytes don't need any alignment, i made some tests a month or so
> ago. Since the ProbeForRead/Write functions are for general purpose, we
> might add some probe functions that don't do alignment checks to improve
> performance. Unfortunately, there are many Probe calls that'd have to be
> fixed.
>
> Best Regards,
> Thomas
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>   
>  
Most of our probe calls should indeed be replaced by a simple if (Ptr > 
MM_USER_PROBE_ADDRESS (or whatever the name is)) then FAIL. But someone 
needs to change them all ;)

Best regards,
Alex Ionescu