File PPC-KVM-Disable-mmu-notifier-check.patch of Package qemu.21548

Overview Repositories Revisions Requests Users Attributes Meta

File PPC-KVM-Disable-mmu-notifier-check.patch of Package qemu.21548

From: Alexander Graf <agraf@suse.de>
Date: Fri, 6 Jan 2012 01:05:55 +0100
Subject: 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.

Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 exec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/exec.c b/exec.c
index a240e3d338a32fb46b1dfe66d4af..ecd6f380f2d928e302cebc41f1c2 100644
--- a/exec.c
+++ b/exec.c
@@ -2291,11 +2291,13 @@ RAMBlock *qemu_ram_alloc_from_fd(ram_addr_t size, MemoryRegion *mr,
         return NULL;
     }
 
+#ifndef TARGET_PPC
     if (kvm_enabled() && !kvm_has_sync_mmu()) {
         error_setg(errp,
                    "host lacks kvm mmu notifiers, -mem-path unsupported");
         return NULL;
     }
+#endif
 
     if (phys_mem_alloc != qemu_anon_ram_alloc) {
         /*

Places

File PPC-KVM-Disable-mmu-notifier-check.patch of Package qemu.21548

Places