It will be helpful for next patch
Signed-off-by: Liu Ping Fan <pingfank@xxxxxxxxxxxxxxxxxx>
---
Can it be merged with the next patch?
---
arch/powerpc/kvm/book3s_hv_rm_mmu.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
index af8602d..ae46052 100644
--- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c
+++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
@@ -135,7 +135,8 @@ static void remove_revmap_chain(struct kvm *kvm, long pte_index,
}
static pte_t lookup_linux_pte(pgd_t *pgdir, unsigned long hva,
- int writing, unsigned long *pte_sizep)
+ int writing, unsigned long *pte_sizep,
+ pte_t **ptepp)
{
pte_t *ptep;
unsigned long ps = *pte_sizep;
@@ -144,6 +145,8 @@ static pte_t lookup_linux_pte(pgd_t *pgdir, unsigned long hva,
ptep = find_linux_pte_or_hugepte(pgdir, hva, &hugepage_shift);
if (!ptep)
return __pte(0);
+ if (ptepp != NULL)
+ *ptepp = ptep;
if (hugepage_shift)
*pte_sizep = 1ul << hugepage_shift;
else
@@ -231,7 +234,7 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
/* Look up the Linux PTE for the backing page */
pte_size = psize;
- pte = lookup_linux_pte(pgdir, hva, writing, &pte_size);
+ pte = lookup_linux_pte(pgdir, hva, writing, &pte_size, NULL);
if (pte_present(pte) && !pte_numa(pte)) {
if (writing && !pte_write(pte))
/* make the actual HPTE be read-only */
@@ -671,7 +674,8 @@ long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags,
memslot = __gfn_to_memslot(kvm_memslots(kvm), gfn);
if (memslot) {
hva = __gfn_to_hva_memslot(memslot, gfn);
- pte = lookup_linux_pte(pgdir, hva, 1, &psize);
+ pte = lookup_linux_pte(pgdir, hva, 1, &psize,
+ NULL);
if (pte_present(pte) && !pte_write(pte))
r = hpte_make_readonly(r);
}
--
1.8.1.4
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