qemu/0012-PPC-KVM-Disable-mmu-notifier-check.patch

From 4b4b134b43b0efae453be44dafe1459218ef176e Mon Sep 17 00:00:00 2001
From: Alexander Graf <agraf@suse.de>
Date: Fri, 6 Jan 2012 01:05:55 +0100
Subject: [PATCH] PPC: KVM: Disable mmu notifier check

When using hugetlbfs (which is required for HV mode KVM on 970), we
check for MMU notifiers that on 970 can not be implemented properly.

So disable the check for mmu notifiers on PowerPC guests, making
KVM guests work there, even if possibly racy in some odd circumstances.
---
 exec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/exec.c b/exec.c
index 0bf0a6e..79c3983 100644
--- a/exec.c
+++ b/exec.c
@@ -1229,11 +1229,13 @@ static void *file_ram_alloc(RAMBlock *block,
         goto error;
     }
 
+#ifndef TARGET_PPC
     if (kvm_enabled() && !kvm_has_sync_mmu()) {
         error_setg(errp,
                    "host lacks kvm mmu notifiers, -mem-path unsupported");
         goto error;
     }
+#endif
 
     if (!stat(path, &st) && S_ISDIR(st.st_mode)) {
         /* Make name safe to use with mkstemp by replacing '/' with '_'. */