Re: I/O port permission bit inheritance between threads

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

 



Hey Stephen,

On Mon, May 20, 2013 at 02:24:31PM -0700, Stephen Hemminger wrote:
> ioperm() inheritance across threads is different in KVM then when run
> on physical hardware.  The following program runs on physical hardware
> but get SEGV under KVM.
> 
> It appears that the I/O permission bits are not shared between threads
> in the same way.

Is this specific to SVM or do you see it on VMX too? My first guess
would be that the KVM instruction emulator does not check to
IO-permissions correctly, but that would affect VMX and SVM.


	Joerg


--
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