On Tue, 2019-04-30 at 22:56 -0400, Kevin O'Connor wrote: > Hi David, > > That call trace certainly looks odd. The SeaBIOS debugging info would > help - try compiling SeaBIOS with debug level 8 and grab the log (as > described at: https://www.seabios.org/Debugging#Diagnostic_information > ). Choosing Xen because it actually succeeds, while Linux real-mode boot then dies a bit later even if I use IDE disks... This SeaBIOS git master (f4c6e4c1) with an IDE disk, from the moment of kexec: unimplemented handle_15XX:330: a=0000ec00 b=00000002 c=00000000 d=00000000 ds=8f00 es=8f00 ss=d980 si=00000000 di=00000000 bp=00000000 sp=0000fe8e cs=8f00 ip=0060 f=0246 enter handle_12: a=534d3c00 b=0000befe c=00003c00 d=002ffb80 ds=8f00 es=8f00 ss=d980 si=00000000 di=00000af1 bp=00000000 sp=0000fe8e cs=8f00 ip=0143 f=0202 invalid handle_legacy_disk:729: a=534d4139 b=000055aa c=0000fe03 d=002ffb81 ds=8f00 es=8f00 ss=d980 si=00001539 di=00000000 bp=00000000 sp=0000fe8e cs=8f00 ip=015b f=0293 invalid handle_legacy_disk:729: a=534d0201 b=00000000 c=889f0001 d=002f0081 ds=8f00 es=8ee0 ss=d980 si=0000aa55 di=00000000 bp=00000000 sp=0000fe8e cs=8f00 ip=0202 f=0247 Xen 4.11.2-pre (XEN) Xen version 4.11.2-pre (dwmw@xxxxxxxxxxxxxx) (gcc (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0) debug=n Wed May 1 22:08:39 IDT 2019 (XEN) Latest ChangeSet: Wed May 1 13:37:09 2019 +0300 git:7c281700a8 (XEN) Bootloader: kexec 2.0.19.git (XEN) Command line: console=vga,com1 (XEN) Xen image load base address: 0 (XEN) Video information: (XEN) VGA is text mode 80x25, font 8x16 (XEN) Disc information: (XEN) Found 1 MBR signatures (XEN) Found 1 EDD information structures And this is all I see when the disk is virtio: unimplemented handle_15XX:330: a=0000ec00 b=00000002 c=00000000 d=00000000 ds=8f00 es=8f00 ss=d980 si=00000000 di=00000000 bp=00000000 sp=0000fe8e cs=8f00 ip=0060 f=0246 enter handle_12: a=534d3c00 b=0000befd c=00003c00 d=002ffb40 ds=8f00 es=8f00 ss=d980 si=00000000 di=00000af1 bp=00000000 sp=0000fe8e cs=8f00 ip=0143 f=0202 invalid handle_legacy_disk:729: a=534d4139 b=000055aa c=0000fe03 d=002ffb81 ds=8f00 es=8f00 ss=d980 si=00001539 di=00000000 bp=00000000 sp=0000fe8e cs=8f00 ip=015b f=0293 Increasing debug to 9, I see: enter handle_15: a=0000ec00 b=00000002 c=00000000 d=00000000 ds=8f00 es=8f00 ss=d980 si=00000000 di=00000000 bp=00000000 sp=0000f96e cs=8f00 ip=0060 f=0246 unimplemented handle_15XX:330: a=0000ec00 b=00000002 c=00000000 d=00000000 ds=8f00 es=8f00 ss=d980 si=00000000 di=00000000 bp=00000000 sp=0000f96e cs=8f00 ip=0060 f=0246 enter handle_15: a=0000e820 b=00000000 c=00000014 d=534d4150 ds=8f00 es=8f00 ss=d980 si=00000000 di=00000a51 bp=00000000 sp=0000f96e cs=8f00 ip=00ec f=0246 enter handle_15: a=0000e820 b=00000001 c=00000014 d=534d4150 ds=8f00 es=8f00 ss=d980 si=00000000 di=00000a65 bp=00000000 sp=0000f96e cs=8f00 ip=00ec f=0202 enter handle_15: a=0000e820 b=00000002 c=00000014 d=534d4150 ds=8f00 es=8f00 ss=d980 si=00000000 di=00000a79 bp=00000000 sp=0000f96e cs=8f00 ip=00ec f=0202 enter handle_15: a=0000e820 b=00000003 c=00000014 d=534d4150 ds=8f00 es=8f00 ss=d980 si=00000000 di=00000a8d bp=00000000 sp=0000f96e cs=8f00 ip=00ec f=0206 enter handle_15: a=0000e820 b=00000004 c=00000014 d=534d4150 ds=8f00 es=8f00 ss=d980 si=00000000 di=00000aa1 bp=00000000 sp=0000f96e cs=8f00 ip=00ec f=0202 enter handle_15: a=0000e820 b=00000005 c=00000014 d=534d4150 ds=8f00 es=8f00 ss=d980 si=00000000 di=00000ab5 bp=00000000 sp=0000f96e cs=8f00 ip=00ec f=0206 enter handle_15: a=0000e820 b=00000006 c=00000014 d=534d4150 ds=8f00 es=8f00 ss=d980 si=00000000 di=00000ac9 bp=00000000 sp=0000f96e cs=8f00 ip=00ec f=0206 enter handle_15: a=0000e820 b=00000007 c=00000014 d=534d4150 ds=8f00 es=8f00 ss=d980 si=00000000 di=00000add bp=00000000 sp=0000f96e cs=8f00 ip=00ec f=0202 enter handle_15: a=534d88f1 b=00000000 c=00000014 d=534d4150 ds=8f00 es=8f00 ss=d980 si=00000000 di=00000af1 bp=00000000 sp=0000f96e cs=8f00 ip=0112 f=0246 enter handle_15: a=534de801 b=00000000 c=00000000 d=534d0000 ds=8f00 es=8f00 ss=d980 si=00000000 di=00000af1 bp=00000000 sp=0000f96e cs=8f00 ip=011f f=0246 enter handle_12: a=534d3c00 b=0000befd c=00003c00 d=002ffb40 ds=8f00 es=8f00 ss=d980 si=00000000 di=00000af1 bp=00000000 sp=0000f96e cs=8f00 ip=0143 f=0202 invalid handle_legacy_disk:729: a=534d4139 b=000055aa c=0000fe03 d=002ffb81 ds=8f00 es=8f00 ss=d980 si=00001539 di=00000000 bp=00000000 sp=0000f96e cs=8f00 ip=015b f=0293 call32_smm 0x000ed91a e9120 handle_smi cmd=b5 smbase=0x000a0000 vp notify fe003000 (2) -- 0x0 call16_smm 0x00007a79 0 0 handle_smi cmd=b5 smbase=0x000a0000 handle_smi cmd=b5 smbase=0x000a0000 call16_smm 0x00007a79 0 0 handle_smi cmd=b5 smbase=0x000a0000 handle_smi cmd=b5 smbase=0x000a0000 call16_smm 0x00007a79 0 0 handle_smi cmd=b5 smbase=0x000a0000 handle_smi cmd=b5 smbase=0x000a0000 call16_smm 0x00007a79 0 0 handle_smi cmd=b5 smbase=0x000a0000 handle_smi cmd=b5 smbase=0x000a0000 call16_smm 0x00007a79 0 0 handle_smi cmd=b5 smbase=0x000a0000 handle_smi cmd=b5 smbase=0x000a0000 call16_smm 0x00007a79 0 0 handle_smi cmd=b5 smbase=0x000a0000 handle_smi cmd=b5 smbase=0x000a0000 call16_smm 0x00007a79 0 0 handle_smi cmd=b5 smbase=0x000a0000 handle_smi cmd=b5 smbase=0x000a0000 call16_smm 0x00007a79 0 0 handle_smi cmd=b5 smbase=0x000a0000 handle_smi cmd=b5 smbase=0x000a0000 call16_smm 0x00007a79 0 0 handle_smi cmd=b5 smbase=0x000a0000 handle_smi cmd=b5 smbase=0x000a0000 call16_smm 0x00007a79 0 0 handle_smi cmd=b5 smbase=0x000a0000 handle_smi cmd=b5 smbase=0x000a0000 call16_smm 0x00007a79 0 0 handle_smi cmd=b5 smbase=0x000a0000 handle_smi cmd=b5 smbase=0x000a0000 call16_smm 0x00007a79 0 0 ... That just goes on for ever. The full log from boot (including the boot of the first kernel) is at http://david.woodhou.se/smi-wtf.txt
<<attachment: smime.p7s>>
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