On Mon, Dec 04, 2017 at 03:07:40PM +0100, Thomas Gleixner wrote: > From: Dave Hansen <[email protected]> > > Populate the PGD entries in the init user PGD which cover the kernel half > of the address space. This makes sure that the installment of the user > visible kernel mappings finds a populated PGD. > > In clone_pgd_range() copy the init user PGDs which cover the kernel half of > the address space, so a process has all the required kernel mappings > visible. > > [ tglx: Split out from the big kaiser dump ] > > Signed-off-by: Dave Hansen <[email protected]> > Signed-off-by: Thomas Gleixner <[email protected]> > > --- > arch/x86/include/asm/pgtable.h | 5 +++++ > arch/x86/mm/kpti.c | 41 > +++++++++++++++++++++++++++++++++++++++++ > 2 files changed, 46 insertions(+)
Reviewed-by: Borislav Petkov <[email protected]> -- Regards/Gruss, Boris. SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) --
