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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2015-03-30 08:11:04 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-04-17 04:23:40 +0300 |
| commit | 7d6e7f7ffaba4e013c7a0589140431799bc17985 (patch) | |
| tree | e562ffe3cd9799537221f9277e36787412ef2f40 /arch/powerpc/kvm | |
| parent | 691e95fd7396905a38d98919e9c150dbc3ea21a3 (diff) | |
| download | linux-7d6e7f7ffaba4e013c7a0589140431799bc17985.tar.xz | |
powerpc/mm/thp: Return pte address if we find trans_splitting.
For THP that is marked trans splitting, we return the pte.
This require the callers to handle the pmd_trans_splitting scenario,
if they care. All the current callers are either looking at pfn or
write_ok, hence we don't need to update them.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kvm')
| -rw-r--r-- | arch/powerpc/kvm/book3s_64_mmu_hv.c | 9 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_rm_mmu.c | 2 |
2 files changed, 4 insertions, 7 deletions
diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c index 26df3864d85a..0fe9c92e78ed 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_hv.c +++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c @@ -537,20 +537,17 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu, } /* if the guest wants write access, see if that is OK */ if (!writing && hpte_is_writable(r)) { - unsigned int hugepage_shift; pte_t *ptep, pte; unsigned long flags; - /* * We need to protect against page table destruction - * while looking up and updating the pte. + * hugepage split and collapse. */ local_irq_save(flags); ptep = find_linux_pte_or_hugepte(current->mm->pgd, - hva, &hugepage_shift); + hva, NULL); if (ptep) { - pte = kvmppc_read_update_linux_pte(ptep, 1, - hugepage_shift); + pte = kvmppc_read_update_linux_pte(ptep, 1); if (pte_write(pte)) write_ok = 1; } diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c index f559b25de173..d839f08cb903 100644 --- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c +++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c @@ -219,7 +219,7 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, local_irq_restore(flags); return H_PARAMETER; } - pte = kvmppc_read_update_linux_pte(ptep, writing, hpage_shift); + pte = kvmppc_read_update_linux_pte(ptep, writing); if (pte_present(pte) && !pte_protnone(pte)) { if (writing && !pte_write(pte)) /* make the actual HPTE be read-only */ |