On Thu, Jun 07, 2012 at 12:33:55PM +0200, Andrea Arcangeli wrote:
On Thu, Jun 07, 2012 at 02:33:33AM -0500, Jonathan Nieder wrote:
Sergio Gelato wrote[1]:
That 3.4.1-1~experimental.1 build
(3.4-trunk-686-pae #1 SMP Wed Jun 6 15:11:31 UTC 2012 i686 GNU/Linux)
Hi,
On Thu, Jun 07, 2012 at 11:56:47AM -0400, Konrad Rzeszutek Wilk wrote:
then the high part. Why that would trip the hypervisor
is not clear to me. Perhaps in the past it only read the
That is the CONFIG_TRANSPARENT_HUGEPAGE=n case and in fact it doesn't
trip the hypervisor. That was tested
Andrea Arcangeli aarca...@redhat.com 06/07/12 12:35 PM
Oops, sorry I didn't imagine atomic64_read on a pmd would trip.
The problem really is that the cmpxchg8b is a write, and hence won't go
through without faulting on a write protected page (which all page table
pages necessarily are).
I
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