From e4c6eff5a3b596b62437344e20a2985ac2a23673 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 10 Mar 2025 16:52:03 +0100 Subject: [PATCH] Revert "KVM: PPC: e500: Mark "struct page" pfn accessed before dropping mmu_lock" This reverts commit 59e21c4613b0a46f46eb124984928df46d88ad57 which is commit 84cf78dcd9d65c45ab73998d4ad50f433d53fb93 upstream. It should not have been applied. Link: https://lore.kernel.org/r/CABgObfb5U9zwTQBPkPB=mKu-vMrRspPCm4wfxoQpB+SyAnb5WQ@mail.gmail.com Reported-by: Paolo Bonzini Signed-off-by: Greg Kroah-Hartman --- arch/powerpc/kvm/e500_mmu_host.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kvm/e500_mmu_host.c b/arch/powerpc/kvm/e500_mmu_host.c index dc75f025dfe2..79c6359b18ae 100644 --- a/arch/powerpc/kvm/e500_mmu_host.c +++ b/arch/powerpc/kvm/e500_mmu_host.c @@ -498,9 +498,11 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, kvmppc_mmu_flush_icache(pfn); out: + spin_unlock(&kvm->mmu_lock); + /* Drop refcount on page, so that mmu notifiers can clear it */ kvm_release_pfn_clean(pfn); - spin_unlock(&kvm->mmu_lock); + return ret; }