At 15:45 + on 16 Feb (1487259954), Andrew Cooper wrote:
> XSA-173 (c/s 8b1764833) introduces gfn_bits, and an upper limit which might be
> lower than the real maxphysaddr, to avoid overflowing the superpage shadow
> backpointer.
>
> However, plenty of hardware has a physical address width
> From: Andrew Cooper [mailto:andrew.coop...@citrix.com]
> Sent: Thursday, February 16, 2017 11:46 PM
>
> XSA-173 (c/s 8b1764833) introduces gfn_bits, and an upper limit which might be
> lower than the real maxphysaddr, to avoid overflowing the superpage shadow
> backpointer.
>
> However, plenty
On 16/02/17 15:45, Andrew Cooper wrote:
> XSA-173 (c/s 8b1764833) introduces gfn_bits, and an upper limit which might be
> lower than the real maxphysaddr, to avoid overflowing the superpage shadow
> backpointer.
>
> However, plenty of hardware has a physical address width less that 44 bits,
>
>>> On 16.02.17 at 16:45, wrote:
> XSA-173 (c/s 8b1764833) introduces gfn_bits, and an upper limit which might be
> lower than the real maxphysaddr, to avoid overflowing the superpage shadow
> backpointer.
>
> However, plenty of hardware has a physical address width