[Qemu-devel] AHCI bug

2014-07-24 Thread Zhang, Eniac
Hi all, I found a problem while using following combinations: qemu-1.6.1 + large disks (>127GB) + q35(AHCI controller) + int13h disk access. The AHCI controller code in Qemu has a bug that it will use the wrong LBA address when Seabios tries to access LBA>128GB (aka 127.5GB limit http://www.ha

Re: [Qemu-devel] problem using AHCI on xen fvm

2014-06-20 Thread Zhang, Eniac
Hi Stefano, You are a genius. Qemu2.0.0 works fine with my AHCI hack. Then I took a look at the patch. That fix is exactly what's missing in qemu 1.6.1. I ported back that one fix and all is working now. I am running full test now to make sure that's the right thing to do. Thanks for

[Qemu-devel] problem using AHCI on xen fvm

2014-06-19 Thread Zhang, Eniac
Hi, I am trying to use AHCI controllers with xen. The main reason for that is because windows is so picky about which type of controller it can boot on, and if you don't have the right registry settings, you get Error 7B (http://support.microsoft.com/kb/324103) So here's my attempt (in "hw/i3