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paravirt: add hooks for ptep_modify_prot_start/commit

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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>
This commit is contained in:
Jeremy Fitzhardinge
2008-06-16 04:30:01 -07:00
committed by Ingo Molnar
parent 1ea0704e0d
commit 08b882c627
3 changed files with 34 additions and 0 deletions
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arch/x86/xen/enlighten.c
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@@ -1138,6 +1138,9 @@ static const struct pv_mmu_ops xen_mmu_ops __initdata = {
.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,