09.03.2011 15:50, Avi Kivity wrote: > On 03/09/2011 02:06 PM, Michael Tokarev wrote: >> Hello. >> >> Dominik Klein (Cc'd) reported on irc that current >> FreeBSD release hangs at boot in qemu-kvm. It is >> trivially verifiable by d/loading the bootonly >> FreeBSD 8.2 CD image from ftp.freebsd.org and >> running >> >> kvm -cdrom FreeBSD-8.2-RELEASE-amd64-bootonly.iso. >> [] >> So far the 3 affected systems where we tried this are all >> AMD machines. My home box is AthlonII, my work box is >> PhenomI 9750, and Dominik tries it on Opteron 6174. I also tried on another AMD machine, with TurionI, -- the same effect. > Can't reproduce. What host kernel version are you using? And this is a very good question, this is what I forgot to mention. It hangs here - in all cases - with 2.6.37+ kernels. I tried 2.6.35 on one of my boxes, and there it works just fine. We're testing various kernels now, or trying to. So I'm not sure anymore it's actually AMD-specific, but at least one person tried debian 2.6.37-2-amd64 kernel on a core-i7 box and that combination works. > Please post the output of > > info register And this is where the most fun begins. Right after `info registers' it "unhangs" and continues as if nothing happened, ... > x/50i $eip-30 ...so I can't get this information anymore. Here it goes with an explicit "stop", fwiw: $ kvm -monitor stdio -cdrom /stage/tmp/FreeBSD-8.2-RELEASE-i386-bootonly.iso QEMU 0.14.0 monitor - type 'help' for more information (qemu) stop (qemu) info registers EAX=00000042 EBX=00009f8b ECX=00000042 EDX=00005dd0 ESI=00000001 EDI=0000c350 EBP=00000000 ESP=00005d9c EIP=0000f3b4 EFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =9f40 0009f400 ffffffff 00c09300 CS =f000 000f0000 0000ffff 00009b00 SS =0000 00000000 ffffffff 00c09300 DS =0000 00000000 ffffffff 00c09300 FS =0000 00000000 ffffffff 00c0f300 GS =0000 00000000 ffffffff 00c0f300 LDT=0000 00000000 0000ffff 00008200 TR =0038 00005f98 00002067 00008b00 GDT= 00009590 0000003f IDT= 00000000 000003ff CR0=00000010 CR2=00000000 CR3=00000000 CR4=00000000 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000000 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=00000000000000000000000000000000 XMM02=00000000000000000000000000000000 XMM03=00000000000000000000000000000000 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000 (qemu) x/50i $eip-30 0x000000000000f396: add 0xc(%di),%ax 0x000000000000f399: add -0xb0(%di),%ax 0x000000000000f39d: (bad) 0x000000000000f39e: decw 0x6885(%bx,%di) 0x000000000000f3a2: (bad) 0x000000000000f3a3: (bad) 0x000000000000f3a4: ljmp *<internal disassembler error> 0x000000000000f3a6: out %al,$0xfe 0x000000000000f3a8: (bad) 0x000000000000f3a9: decw 0x856(%bp,%di) 0x000000000000f3ad: mov %dx,-0xb0(%di) 0x000000000000f3b1: (bad) 0x000000000000f3b2: ljmp *<internal disassembler error> 0x000000000000f3b4: jnp 0xf3b5 0x000000000000f3b6: (bad) 0x000000000000f3b7: ljmp *(%bx,%di) 0x000000000000f3b9: rorw %cl,0xc45(%bp,%di) 0x000000000000f3bd: mov %bx,0x24(%si) 0x000000000000f3c0: add $0x3,%al 0x000000000000f3c2: inc %si 0x000000000000f3c3: or %al,(%bx,%di) 0x000000000000f3c5: rorb 0x2404(%bx,%di) 0x000000000000f3c9: call 0xd58e 0x000000000000f3cc: (bad) 0x000000000000f3cd: decw 0x1446(%bp,%di) 0x000000000000f3d1: mov %ax,-0xb4(%di) 0x000000000000f3d5: (bad) 0x000000000000f3d6: ljmp *<internal disassembler error> 0x000000000000f3d8: and %bh,%bh 0x000000000000f3da: (bad) 0x000000000000f3db: decw 0x29d8(%bx,%di) 0x000000000000f3df: fiaddl (%bp,%di) 0x000000000000f3e1: inc %si 0x000000000000f3e2: add $0xc7,%al 0x000000000000f3e4: inc %sp 0x000000000000f3e5: and $0x10,%al 0x000000000000f3e7: add %al,(%bx,%si) 0x000000000000f3e9: add %al,(%bx,%si) 0x000000000000f3eb: mov %dx,0x24(%si) 0x000000000000f3ee: or %cl,0x2444(%bx,%di) 0x000000000000f3f2: or $0x8b,%al 0x000000000000f3f4: inc %bp 0x000000000000f3f5: or $0x3,%al 0x000000000000f3f7: inc %si 0x000000000000f3f8: or %al,(%bx,%di) 0x000000000000f3fa: fmuls 0x2444(%bx,%di) 0x000000000000f3fe: add $0x8b,%al 0x000000000000f400: inc %bp 0x000000000000f401: movsb %ds:(%si),%es:(%di) 0x000000000000f402: mov %ax,(%si) (qemu) _ Thanks! /mjt -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
