tree 7dec07ec0a32a53f003551802cb73c4ce3373527
parent b3e4e63fd9ee8cd5d9047b89e0d463d5c48ee5b5
author Avi Kivity <avi@qumranet.com> 1197209746 +0200
committer Avi Kivity <avi@qumranet.com> 1201708400 +0200

KVM: MMU: Simplify calculation of pte access

The nx bit is awkwardly placed in the 63rd bit position; furthermore it
has a reversed meaning compared to the other bits, which means we can't use
a bitwise and to calculate compounded access masks.

So, we simplify things by creating a new 3-bit exec/write/user access word,
and doing all calculations in that.

Signed-off-by: Avi Kivity <avi@qumranet.com>