[Qemu-devel] Re: AHCI in SeaBIOS

[Kevin O'Connor]

On Thu, Feb 10, 2011 at 04:25:11PM +0100, Alexander Graf wrote:
> Kevin O'Connor wrote:
> > On Tue, Feb 08, 2011 at 12:57:41AM +0100, Alexander Graf wrote:
> >> Do you remember why you put AHCI in with default=n? I'd like to see
> >> it enabled in Qemu 0.14 and IIUC we use the default configuration
> >> for that.
> > The reason for not enabling it by default was for two reasons - it had
> > not been tested on real hardware, and it was unclear if doing the jump
> > into 32bit mode would have adverse impact.
> 
> Do you have to do the jump even when AHCI is unused? If no, it shouldn't
> hurt, right?

The 32bit jump is only done if an AHCI drive is found and one tries to
read/write to it.

-Kevin