Il 03/10/2012 12:57, Lucas Meneghel Rodrigues ha scritto:
Yep, I did send patches with the testdev device present on qemu-kvm.git
to qemu.git a while ago, but there were many comments on the review, I
ended up not implementing everything that was asked and the patches were
archived.
If nobody wants to step up to port it, I'll re-read the original thread
and will spin up new patches (and try to go through the end with it).
Executing the KVM unittests is something that we can't afford to lose,
so I'd say it's important on this last mile effort to get rid of qemu-kvm.
Absolutely, IIRC the problem was that testdev did a little bit of
everything... let's see what's the functionality of testdev:
- write (port 0xf1), can be replaced in autotest with:
-device isa-debugcon,iobase=0xf1,chardev=...
- exit code (port 0xf4), see this series:
http://lists.gnu.org/archive/html/qemu-devel/2012-07/msg00818.html
- ram size (port 0xd1). If we can also patch kvm-unittests, the memory
is available in the CMOS or in fwcfg. Here is the SeaBIOS code:
u32 rs = ((inb_cmos(0x34) << 16) | (inb_cmos(0x35) << 24));
if (rs)
rs += 16 * 1024 * 1024;
else
rs = (((inb_cmos(0x30) << 10) | (inb_cmos(0x31) << 18))
+ 1 * 1024 * 1024);
The rest (ports 0xe0..0xe7, 0x2000..0x2017, MMIO) can be left in testdev.