[Bug 7768] New: server doesn't support processor affinity masks other than 1

Wine Bugs wine-bugs at winehq.org
Fri Mar 16 13:15:11 CDT 2007


           Summary: server doesn't support processor affinity masks other
                    than 1
           Product: Wine
           Version: CVS
          Platform: Other
        OS/Version: other
            Status: NEW
          Severity: normal
          Priority: P2
         Component: wine-kernel
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: juan_lang at yahoo.com

This is perhaps two bugs rather than one, but they're so closely related I'm
entering them as one.

The server (in process.c) always initializes the process affinity (in the
get_process_info handler) to 1.  On Linux, it's possible to get a process's
affinity using sched_getaffinity - the server should initialize a process's
affinity using this instead.

The server also prohibits setting a process's affinity to anything but 1 (in the
set_process_info handler), failing with STATUS_INVALID_PARAMETER.  This seems
somewhat arbitrary.  First, it could fake accepting the affinity, as long as the
affinity mask doesn't contain CPUs which aren't present (see bug 7766).  Second,
it could set the process's affinity on Linux, using sched_setaffinity.

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