A bisect points to the following patch:
# git bisect bad
c45e5b5b30ac1f5505725a7b36e68cedfce4f01f is the first bad commit
commit c45e5b5b30ac1f5505725a7b36e68cedfce4f01f
Author: Gerd Hoffmann <kra...@redhat.com>
Date: Tue Feb 26 17:46:11 2013 +0100
Switch to efi-enabled nic roms by default
All PCI nics are switched to EFI-enabled roms by default. They are
composed from three images (legacy, efi ia32 & efi x86), so classic
pxe booting will continue to work.
Exception: eepro100 is not switched, it uses a single rom for all
emulated eepro100 variants, then goes patch the rom header on the
fly with the correct PCI IDs. I doubt that will work as-is with
the efi roms.
Keep old roms for 1.4+older machine types via compat properties,
needed because the efi-enabled roms are larger so the pci rom bar
size would change.
Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
> pxe boot does not work with qemu 1.7 (also tested with latest code from
> master).
>
> # kvm -m 1024 -net nic -net tap
>
> simply hangs at:
>
> iPXE (PCI 00:03.0) starting execution.
>
> and I get the following output:
>
> # kvm -m 1024 -net nic -net tap
> KVM: unknown exit, hardware reason 80000021
> EAX=00000011 EBX=00000000 ECX=00000030 EDX=00007baa
> ESI=c00e006a EDI=00098bf0 EBP=00000000 ESP=00007baa
> EIP=00000215 EFL=00010006 [-----P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
> ES =0030 0009cf30 ffffffff 0000f300 DPL=3 DS16 [-WA]
> CS =9c7c 0009c7e0 0000ffff 00009b00 DPL=0 CS16 [-RA]
> SS =0000 00000000 0000ffff 00009300 DPL=0 DS16 [-WA]
> DS =0030 0009cf30 ffffffff 0000f300 DPL=3 DS16 [-WA]
> FS =0030 0009cf30 ffffffff 0000f300 DPL=3 DS16 [-WA]
> GS =0030 0009cf30 ffffffff 0000f300 DPL=3 DS16 [-WA]
> LDT=0000 00000000 0000ffff 00008200 DPL=0 LDT
> TR =0000 feffd000 00002088 00008b00 DPL=0 TSS32-busy
> GDT= 0009cf40 00000037
> IDT= 00000000 0000ffff
> CR0=00000011 CR2=00000000 CR3=00000000 CR4=00000000
> DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000
> DR3=0000000000000000
> DR6=00000000ffff0ff0 DR7=0000000000000400
> EFER=0000000000000000
> Code=66 0f 01 16 10 00 66 0f 01 1e 48 00 0f 20 c0 0c 01 0f 22 c0 <66> ea a4 00
> 00 00 08 00 0f 20 c0 24 fe 0f 22 c0 ff 2e 4e 00 2e a1 ac 06 8e d8 8e c0 8e e0
>
> this is using RHEL6 kernel 358.23.2.el6
>
> any ideas?
>
