Re: superpages and kmem on amd64

2012-05-20 Thread Alan Cox
On Sun, May 20, 2012 at 2:01 AM, Marko Zec z...@fer.hr wrote: Hi all, I'm playing with an algorithm which makes use of large contiguous blocks of kernel memory (ranging from 1M to 1G in size), so it would be nice if those could be somehow forcibly mapped to superpages. I was hoping that the

Re: superpages and kmem on amd64

2012-05-20 Thread Alan Cox
On 05/20/2012 09:43, Marko Zec wrote: On Sunday 20 May 2012 09:25:59 Alan Cox wrote: On Sun, May 20, 2012 at 2:01 AM, Marko Zecz...@fer.hr wrote: Hi all, I'm playing with an algorithm which makes use of large contiguous blocks of kernel memory (ranging from 1M to 1G in size), so it would

Re: superpages and kmem on amd64

2012-05-20 Thread Alan Cox
On 05/20/2012 17:48, Marko Zec wrote: On Sunday 20 May 2012 19:34:26 Alan Cox wrote: ... In any case, I wish to be certain that a particular kmem virtual address range is mapped to superpages - how can I enforce that at malloc time, and / or find out later if I really got my kmem mapped

Re: amd64/186061: FreeBSD 10 crashes as KVM guest on GNU/Linux on AMD family 10h CPUs

2014-02-15 Thread Alan Cox
The following reply was made to PR amd64/186061; it has been noted by GNATS. From: Alan Cox a...@rice.edu To: bug-follo...@freebsd.org, simon.mat...@invoca.ch Cc: Subject: Re: amd64/186061: FreeBSD 10 crashes as KVM guest on GNU/Linux on AMD family 10h CPUs Date: Sat, 15 Feb 2014 12:09:58