[lkml]   [2009]   [Jun]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [benchmark] 1% performance overhead of paravirt_ops on native kernels
Matthew Garrett wrote:
> On Tue, Jun 09, 2009 at 11:07:41AM -0700, Linus Torvalds wrote:
>> Side note: intel is to blame too. I think several Atom versions were
>> shipped with 64-bit mode disabled. So even "modern" CPU's are sometimes
>> artifically crippled to just 32-bit mode.
> And some people still want to run dosemu so they can drive their
> godforsaken 80s era PIO driven data analyzer. It'd be nice to think that
> nobody used vm86, but they always seem to pop out of the woodwork
> whenever someone suggests 64-bit kernels by default.

There is both KVM and Qemu as alternatives, though. The godforsaken
80s-era PIO driven data analyzer will run fine in Qemu even on
non-HVM-capable hardware if it's 64-bit capable. Most of the time it'll
spend sitting in PIO no matter what you do.


 \ /
  Last update: 2009-06-10 01:05    [W:0.051 / U:4.476 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site