On Tue, Jan 16, 2018 at 8:36 AM, Joerg Roedel <[email protected]> wrote: > From: Joerg Roedel <[email protected]> > > Also populate the user-spage pgd's in the user page-table. > > Signed-off-by: Joerg Roedel <[email protected]> > --- > arch/x86/include/asm/pgtable-2level.h | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/arch/x86/include/asm/pgtable-2level.h > b/arch/x86/include/asm/pgtable-2level.h > index 685ffe8a0eaf..d96486d23c58 100644 > --- a/arch/x86/include/asm/pgtable-2level.h > +++ b/arch/x86/include/asm/pgtable-2level.h > @@ -19,6 +19,9 @@ static inline void native_set_pte(pte_t *ptep , pte_t pte) > > static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) > { > +#ifdef CONFIG_PAGE_TABLE_ISOLATION > + pmd.pud.p4d.pgd = pti_set_user_pgd(&pmdp->pud.p4d.pgd, > pmd.pud.p4d.pgd); > +#endif > *pmdp = pmd; > } >
Nothing against your patch, but this seems like a perfectly fine place to rant: I *hate* the way we deal with page table folding. Grr.
