On Tue, 16 Jan 2018, Joerg Roedel wrote: > From: Joerg Roedel <jroedel@xxxxxxx> > > With PAE paging we don't have PGD and P4D levels in the > page-table, instead the PUD level is the highest one. > > In PAE page-tables at the top-level most bits we usually set > with _KERNPG_TABLE are reserved, resulting in a #GP when > they are loaded by the processor. > > Work around this by populating PUD entries in the user > page-table only with _PAGE_PRESENT set. > > I am pretty sure there is a cleaner way to do this, but > until I find it use this #ifdef solution. Stick somehting like #define _KERNELPG_TABLE_PUD_ENTRY into the 32 and 64 bit variants of some relevant header file Thanks, tglx -- 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>
