scratch increasing MAXPHYS

2011-11-11 Thread Geoff Steckel
Increasing MAXPHYS to 256K shows a few places where it's assumed that there are 16 pages in MAXPHYS. In dev/ic/ahci.c I had to make this change @307 to make the scatter-gather table large enough - 1 entry per page + extra because that's what the previous code had and didn't say why. I could

Re: scratch increasing MAXPHYS

2011-11-11 Thread David Gwynne
its generally hard for the cpu to slow a disk down... On 12/11/2011, at 8:36 AM, Geoff Steckel wrote: Increasing MAXPHYS to 256K shows a few places where it's assumed that there are 16 pages in MAXPHYS. In dev/ic/ahci.c I had to make this change @307 to make the scatter-gather table large