Re: [kvm-unit-tests PATCH 2/4] x86: emulator.c cleanup: Use ASM_TRY for the UD_VECTOR cases

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 8/3/22 20:21, Sean Christopherson wrote:
I've noticed test_illegal_movbe() does not execute with KVM_FEP.
Just making sure: is it intentional?
It's intentional.  FEP isn't needed because KVM emulates MOVBE on #UD when it's
not supported by the host, e.g. to allow migrating to an older host.

	GP(EmulateOnUD | ModRM, &three_byte_0f_38_f0),
	GP(EmulateOnUD | ModRM, &three_byte_0f_38_f1),


*puts historian hat on*

The original reason was to test Linux using MOVBE even on non-Atom machines, when MOVBE was only on Atoms. :)

Paolo




[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]

  Powered by Linux