tree 802f56f655246d21cf722e06353bd2d30011252a
parent 40e19b519caeb93def89c45082d776fccfb96dbb
author Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> 1303400084 +0900
committer Avi Kivity <avi@redhat.com> 1306067978 -0400

KVM: MMU: Optimize guest page table walk

This patch optimizes the guest page table walk by using get_user()
instead of copy_from_user().

With this patch applied, paging64_walk_addr_generic() has become
about 0.5us to 1.0us faster on my Phenom II machine with NPT on.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>