mmap huge page and MAP_SYNC flag support

David Frank david_frank95 at yahoo.com
Thu Jul 12 19:03:31 EDT 2018


 Tried everything in here:How do I install kernel header files?

| 
| 
| 
|  |  |

 |

 |
| 
|  | 
How do I install kernel header files?

i want to write a device driver but not able to find the header file can someone please help me find them?Also i...
 |

 |

 |



nothing worked.

    On Thursday, July 12, 2018, 2:58:49 PM EDT, valdis.kletnieks at vt.edu <valdis.kletnieks at vt.edu> wrote:  
 
 On Thu, 12 Jul 2018 18:44:43 -0000, David Frank said:
> Hi,How do I enable the MAP_SYNC flag in mmap for linux 4.15, my code does not
> compile with that flag on linux 4.15.0-041500rc7-generic #201801072330

Get your distro to ship an update to /usr/include/linux  (kernel-headers) that
contains the flag.  Your kernel supports it, but your toolchain doesn't until
you get an include file that includes the update for MAP_SYNC

> Also, how do I make mmap support map size of 2GB or larger, currently the
> call to mmap fails with mapsize of 2GB.

What error code does it fail with?
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies at kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20180712/cc531482/attachment.html>


More information about the Kernelnewbies mailing list