On 18.05.2011, at 21:16, Jan Kiszka wrote: > On 2011-05-18 14:48, Alexander Graf wrote: >> AHCI provides two ways of reading/writing data: >> >> 1) NCQ >> 2) ATA commands with the LBA in the command FIS >> >> In the second code path, we didn't handle any LBAs that were bigger than >> 16 bits, so whenever a guest that used high LBA numbers wanted to access >> data, the LBA got truncated down to 16 bits, giving the guest garbage. >> >> This patch adds support for LBAs higher than 16 bits. I've tested that it >> works just fine with SeaBIOS and Linux guests. This patch also unbreaks >> the often reported grub errors people have seen with AHCI. > > Cool! I actually had such a guest as well, but I didn't manage to look > closer so far. Now this patch cures it.
Heh, yeah. Only costed me 2 days of my life - sigh :) Alex
