FAILED: patch "[PATCH] KVM: e500: always restore irqs" failed to apply to 6.6-stable tree

FAILED: patch "[PATCH] KVM: e500: always restore irqs" failed to apply to 6.6-stable tree

[gregkh]

The patch below does not apply to the 6.6-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y
git checkout FETCH_HEAD
git cherry-pick -x 87ecfdbc699cc95fac73291b52650283ddcf929d
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2025011346-singer-curry-4142@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^..

Possible dependencies:



thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 87ecfdbc699cc95fac73291b52650283ddcf929d Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Sun, 12 Jan 2025 10:34:44 +0100
Subject: [PATCH] KVM: e500: always restore irqs

If find_linux_pte fails, IRQs will not be restored.  This is unlikely
to happen in practice since it would have been reported as hanging
hosts, but it should of course be fixed anyway.

Cc: stable@vger.kernel.org
Reported-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/powerpc/kvm/e500_mmu_host.c b/arch/powerpc/kvm/e500_mmu_host.c
index e5a145b578a4..6824e8139801 100644
--- a/arch/powerpc/kvm/e500_mmu_host.c
+++ b/arch/powerpc/kvm/e500_mmu_host.c
@@ -479,7 +479,6 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
 		if (pte_present(pte)) {
 			wimg = (pte_val(pte) >> PTE_WIMGE_SHIFT) &
 				MAS2_WIMGE_MASK;
-			local_irq_restore(flags);
 		} else {
 			local_irq_restore(flags);
 			pr_err_ratelimited("%s: pte not present: gfn %lx,pfn %lx\n",
@@ -488,8 +487,9 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
 			goto out;
 		}
 	}
-	writable = kvmppc_e500_ref_setup(ref, gtlbe, pfn, wimg);
+	local_irq_restore(flags);
 
+	writable = kvmppc_e500_ref_setup(ref, gtlbe, pfn, wimg);
 	kvmppc_e500_setup_stlbe(&vcpu_e500->vcpu, gtlbe, tsize,
 				ref, gvaddr, stlbe);