Bug#676360: [Xen-devel] [PATCH] thp: avoid atomic64_read in pmd_read_atomic for 32bit PAE\

2012-06-11 Thread Andrew Jones
- Original Message - On Thu, Jun 07, 2012 at 11:00:33PM +0200, Andrea Arcangeli wrote: In the x86 32bit PAE CONFIG_TRANSPARENT_HUGEPAGE=y case while holding the mmap_sem for reading, cmpxchg8b cannot be used to read pmd contents under Xen. So instead of dealing only with

Bug#676360: [Xen-devel] [PATCH] thp: avoid atomic64_read in pmd_read_atomic for 32bit PAE\

2012-06-11 Thread Andrea Arcangeli
Hi, On Mon, Jun 11, 2012 at 03:27:38PM -0400, Konrad Rzeszutek Wilk wrote: Nice. Andrew, any chane you could test this patch on the affected Xen hypervisors? Was it as easy to reproduce this on a RHEL5 (U1?) hypervisor or is it really only on Linode and Amazon EC2? Originally, I

Bug#676360: [Xen-devel] [PATCH] thp: avoid atomic64_read in pmd_read_atomic for 32bit PAE\

2012-06-11 Thread Konrad Rzeszutek Wilk
Nice. Andrew, any chane you could test this patch on the affected Xen hypervisors? Was it as easy to reproduce this on a RHEL5 (U1?) hypervisor or is it really only on Linode and Amazon EC2? Originally, I was able to reproduce the issue easily with a RHEL5 host. Now, with this patch