qemu/0010-PPC-KVM-Disable-mmu-notifier-check.patch

From 9f443d183c7658812e0ffb147ae38cdb74ea94b7 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 8ffde75..3ac8a82 100644
--- a/exec.c
+++ b/exec.c
@@ -1230,11 +1230,13 @@ static void *file_ram_alloc(RAMBlock *block,
     int fd = -1;
     int64_t page_size;
 
+#ifndef TARGET_PPC
     if (kvm_enabled() && !kvm_has_sync_mmu()) {
         error_setg(errp,
                    "host lacks kvm mmu notifiers, -mem-path unsupported");
         return NULL;
     }
+#endif
 
     for (;;) {
         fd = open(path, O_RDWR);