On Mon, 2015-11-09 at 16:18 -0700, Toshi Kani wrote: > On Mon, 2015-11-09 at 17:36 -0500, Boris Ostrovsky wrote: > > On 11/09/2015 03:47 PM, Kirill A. Shutemov wrote: > > > On Mon, Nov 09, 2015 at 02:39:31PM -0500, Boris Ostrovsky wrote: > > > > On 11/09/2015 02:16 PM, Toshi Kani wrote: : > > > > > > > > FWIW, it looks like pmd_pfn_mask() inline is causing this. Reverting it > > > > alone makes this crash go away. > > > Could you check the patch below? > > > > > > I does fix the problem on baremetal, thanks. My 32-bit Xen guests still > > fail which I thought was the same issue but now that I looked at it more > > carefully it has different signature. > > I do not think Xen is hitting this, but I think page_level_mask() has the same > issue for a long time. I will set up 32-bit env on a system with >4GB memory > to verify this. As Kirill explained me in his code review comment for *PAGE_MASK, page_level_mas k() is fine as it is used for virtual addresses. -Toshi -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>