qemu/0012-PPC-KVM-Disable-mmu-notifier-check.patch
2015-03-21 11:46:36 +00:00

33 lines
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From 58690ae5034776f2b122b879475db9e6245f9789 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 e97071a..3c33162 100644
--- a/exec.c
+++ b/exec.c
@@ -1134,11 +1134,13 @@ 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
/* Make name safe to use with mkstemp by replacing '/' with '_'. */
sanitized_name = g_strdup(memory_region_name(block->mr));