On Tue, Aug 23, 2011 at 06:15:33AM -0300, Marcelo Tosatti wrote:
> On Tue, Aug 16, 2011 at 11:56:37PM -0400, Umesh Deshpande wrote:
> > ramlist mutex is implemented to protect the RAMBlock list traversal in the
> > migration thread from their addition/removal from the iothread.
> >
> > Signed-off-by: Umesh Deshpande <udeshpan@xxxxxxxxxx>
> > ---
> > cpu-all.h | 2 ++
> > exec.c | 19 +++++++++++++++++++
> > qemu-common.h | 2 ++
> > 3 files changed, 23 insertions(+), 0 deletions(-)
> >
> > diff --git a/cpu-all.h b/cpu-all.h
> > index 6b217a2..eab9803 100644
> > --- a/cpu-all.h
> > +++ b/cpu-all.h
> > @@ -21,6 +21,7 @@
> >
> > #include "qemu-common.h"
> > #include "cpu-common.h"
> > +#include "qemu-thread.h"
> >
> > /* some important defines:
> > *
> > @@ -932,6 +933,7 @@ typedef struct RAMBlock {
> > } RAMBlock;
> >
> > typedef struct RAMList {
> > + QemuMutex mutex;
> > uint8_t *phys_dirty;
> > QLIST_HEAD(ram, RAMBlock) blocks;
> > QLIST_HEAD(, RAMBlock) blocks_mru;
>
> A comment on what the mutex protects would be good.
And on the lock ordering.
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