Re: mmap huge page and MAP_SYNC flag support

2018-07-12 Thread David Frank
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 Thursd

Re: mmap huge page and MAP_SYNC flag support

2018-07-12 Thread David Frank
By the way, when I havemmap(NULL, MAPSIZE, PROT_WRITE_|PROT_READ, MAP_HUGETLB|MAP_PRIVATE, fd, 0):where MAPSIZE= 2GB,it fails witherror = 22, invalid argument, without MAP_HUGETLB, it was ok. On Thursday, July 12, 2018, 4:44:35 PM EDT, wrote: On Thu, 12 Jul 2018 20:33:32 -, David

Re: mmap huge page and MAP_SYNC flag support

2018-07-12 Thread valdis . kletnieks
On Thu, 12 Jul 2018 20:33:32 -, David Frank said: > I got it from hereHow To Install Kernel 4.15 RC7 on Ubuntu, Linux Mint, > Elementary OS And Other Ubuntu Derivatives | LinuxG.net Looks like you got the linux-image-... .deb but didn't do the linux-headers-... .deb(s). (And I have no idea

Re: mmap huge page and MAP_SYNC flag support

2018-07-12 Thread David Frank
I got it from hereHow To Install Kernel 4.15 RC7 on Ubuntu, Linux Mint, Elementary OS And Other Ubuntu Derivatives | LinuxG.net | | | | How To Install Kernel 4.15 RC7 on Ubuntu, Linux Mint, Elementary OS And ... | | | no headers On Thursday, July 12, 2018, 4:22:33 PM EDT, wr

Re: mmap huge page and MAP_SYNC flag support

2018-07-12 Thread valdis . kletnieks
On Thu, 12 Jul 2018 20:10:36 -, David Frank said: > Thanks Valdis.Looks like the failure is that I can not write to a 2GB buffer > (char bf[2GB size]).Where do I get the distro include file? >From the same exact place you got the distro kernel from. (I'm guessing it's a distro kernel from th

Re: mmap huge page and MAP_SYNC flag support

2018-07-12 Thread David Frank
Thanks Valdis.Looks like the failure is that I can not write to a 2GB buffer (char bf[2GB size]).Where do I get the distro include file? On Thursday, July 12, 2018, 2:58:49 PM EDT, valdis.kletni...@vt.edu wrote: On Thu, 12 Jul 2018 18:44:43 -, David Frank said: > Hi,How do I enabl

Re: mmap huge page and MAP_SYNC flag support

2018-07-12 Thread valdis . kletnieks
On Thu, 12 Jul 2018 18:44:43 -, 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