paravirt: add hooks for ptep_modify_prot_start/commit
This patch adds paravirt-ops hooks in pv_mmu_ops for ptep_modify_prot_start and
ptep_modify_prot_commit. This allows the hypervisor-specific backends to
implement these in some more efficient way.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 73fb0c4..0b7553c 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1138,6 +1138,9 @@
.set_pte_at = xen_set_pte_at,
.set_pmd = xen_set_pmd_hyper,
+ .ptep_modify_prot_start = __ptep_modify_prot_start,
+ .ptep_modify_prot_commit = __ptep_modify_prot_commit,
+
.pte_val = xen_pte_val,
.pte_flags = native_pte_val,
.pgd_val = xen_pgd_val,