> -----Original Message----- > From: Christoph Hellwig [mailto:hch@xxxxxxxxxxxxx] > Sent: Sunday, May 01, 2011 12:07 PM > To: KY Srinivasan > Cc: Christoph Hellwig; Greg KH; gregkh@xxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; > devel@xxxxxxxxxxxxxxxxxxxxxx; virtualization@xxxxxxxxxxxxxx > Subject: Re: [PATCH 00/25] Staging: hv: Cleanup vmbus driver code > > On Sun, May 01, 2011 at 03:46:23PM +0000, KY Srinivasan wrote: > > What is the issue here? This is no different than what is done in other > > Virtualization platforms. For instance, the Xen blkfront driver is no > > different - if you specify the block device to be presented to the guest > > as an ide device, it will register for the appropriate ide major number. > > No, it won't - at least not in mainline just because it's so buggy. > If distros keep that crap around I can only recommed you to not use > them. Christoph, Could you elaborate on the problems/issues when the block driver registers for the IDE majors. On the Qemu side, we have a mechanism to disable the emulation when PV drivers load. I don't think there is an equivalent mechanism on the Windows side. So, as far as I know, registering for the IDE majors is the only way to also prevent native drivers in Linux from taking control of the emulated device. Regards, K. Y _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
