Re: [PATCH RFC v2 6/6] KVM: introduce a new API for getting dirty bitmaps

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

 



On 04/23/2010 03:59 PM, Alexander Graf wrote:

Ah so the 31st bit is optional as far as userspace is concerned?  What does it mean? (just curious)
The 0x80000000 bit declares that a pointer is in 24-bit mode, so that applications can use the spare upper bits for random data.

See http://en.wikipedia.org/wiki/31-bit for an explanation.

Interesting. Luckily AMD made the top 16 bits of pointers reserved in x86-64.

--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

--
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