https://bugzilla.kernel.org/show_bug.cgi?id=120971 Bug ID: 120971 Summary: KVM: entry failed, hardware error 0x80000021 on Intel Host Product: Virtualization Version: unspecified Kernel Version: 4.7.0-rc4-mainline Hardware: Intel OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: kvm Assignee: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx Reporter: joseph.knockenhauer@xxxxxxxxx Regression: No hardware is as follows: Intel i5 6600K 32Gig DDR4 Memory GTX 980ti 2 SSD 2 HDD Using qemu-kvm and ovmf the following error occurs erratically when booted into a windows 10 host: KVM: entry failed, hardware error 0x80000021 If you're running a guest on an Intel machine without unrestricted mode support, the failure can be most likely due to the guest entering an invalid state for Intel VT. For example, the guest maybe running in big real mode which is not supported on less recent Intel processors. RAX=ffffffffffd148c0 RBX=0000000000000000 RCX=0000000000000086 RDX=0000000000000 000 RSI=ffffda819a1e1180 RDI=ffff910d6ee037b0 RBP=0000000000000000 RSP=ffffda819a1f7 758 R8 =00000000ffffffff R9 =0000000000000000 R10=00000000ffffffff R11=0000000000000 000 R12=00000000a71b10d9 R13=0000000000000046 R14=0000000000000000 R15=0000000000000 000 RIP=fffff8013c22615f RFL=00000282 [--S----] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA] CS =0010 0000000000000000 00000000 00209b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 00000000 00409300 DPL=0 DS [-WA] DS =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA] FS =0053 00000000b300c000 0000fc00 0040f300 DPL=3 DS [-WA] GS =002b ffffda819a1e1000 ffffffff 00c0f300 DPL=3 DS [-WA] LDT=0000 0000000000000000 ffffffff 00000000 TR =0040 ffffda819a1e7b40 00000067 00008b00 DPL=0 TSS64-busy GDT= ffffda819a1eec00 0000006f IDT= ffffda819a1eec70 00000fff CR0=80050033 CR2=0000000000000030 CR3=00000000001ab000 CR4=001506f8 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000 000 DR6=00000000fffe0ff0 DR7=0000000000000400 EFER=0000000000000d01 Code=00 00 00 00 00 48 83 ec 28 e8 47 b3 ff ff 48 83 c4 28 fb f4 <c3> cc cc cc c c cc cc 66 66 0f 1f 84 00 00 00 00 00 0f 20 d0 0f 22 d0 c3 cc cc cc cc cc cc The error occurs whether or not pci devices are passed through to the host or not, and in every conceivable processor configuration that works for Windows guests. The error occurs approximately 10 minutes into using the machine (give or take a few minutes). Occasionally the error occurs on boot of the guest. This has also happened on previous kernels. Currently I have the kvm_intel module loaded with emulate_invalid_guest_state=0, although it also occurs in the same capacity if the parameter is set to 1. Please feel free to contact me for additional information. -- You are receiving this mail because: You are watching the assignee of the bug. -- 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
