diff options
| author | Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2020-05-05 12:47:21 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-05-05 21:20:15 +1000 |
| commit | e3d8ed5518c7f50e24d2530b36d14b6c4284769f (patch) | |
| tree | 1551c83aca3a737aef357d534f72013d938548e1 /arch/powerpc/kvm/book3s_64_mmu_hv.c | |
| parent | 9781e759b3258bc607296bc1bf7cc314b7bfd0fc (diff) | |
| download | linux-e3d8ed5518c7f50e24d2530b36d14b6c4284769f.tar.bz2 | |
powerpc/kvm/book3s: Use find_kvm_host_pte in h_enter
Since kvmppc_do_h_enter can get called in realmode use low level
arch_spin_lock which is safe to be called in realmode.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200505071729.54912-15-aneesh.kumar@linux.ibm.com
Diffstat (limited to 'arch/powerpc/kvm/book3s_64_mmu_hv.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_64_mmu_hv.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c index 8f9cd4c79044..18aed9775a3c 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_hv.c +++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c @@ -281,11 +281,10 @@ static long kvmppc_virtmode_do_h_enter(struct kvm *kvm, unsigned long flags, { long ret; - /* Protect linux PTE lookup from page table destruction */ - rcu_read_lock_sched(); /* this disables preemption too */ + preempt_disable(); ret = kvmppc_do_h_enter(kvm, flags, pte_index, pteh, ptel, kvm->mm->pgd, false, pte_idx_ret); - rcu_read_unlock_sched(); + preempt_enable(); if (ret == H_TOO_HARD) { /* this can't happen */ pr_err("KVM: Oops, kvmppc_h_enter returned too hard!\n"); |