Re: [PATCH 4/4] KVM: x86 emulator: Make x86_decode_insn() return proper macros

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

 



On Sun, 31 Jul 2011 11:48:40 +0300
Avi Kivity <avi@xxxxxxxxxx> wrote:

> On 07/30/2011 12:03 PM, Takuya Yoshikawa wrote:
> > From: Takuya Yoshikawa<yoshikawa.takuya@xxxxxxxxxxxxx>
> >
> > Return EMULATION_OK/FAILED consistently.  Also treat instruction fetch
> > errors, not restricted to X86EMUL_UNHANDLEABLE, as EMULATION_FAILED;
> > although this cannot happen in practice, the current logic will continue
> > the emulation even if the decoder fails to fetch the instruction.
> 
> In fact it can happen in practice, but not through normal usage.  For 
> example, one vcpu can execute an instruction which traps into the 
> emulator, while another vcpu changes the page tables to make the 
> instruction unfetchable.
> 

Really virtualization specific!
I need to think about multiple vcpus more.

Thanks,
  Takuya

-- 
Takuya Yoshikawa <takuya.yoshikawa@xxxxxxxxx>
--
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


[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