On Wed, Nov 13, 2019 at 05:55:30PM +0800, Shile Zhang wrote: > +#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE) > /* > * First make sure the mappings are removed from all page-tables > * before they are freed. > + * > + * This is only needed on x86-32 with !SHARED_KERNEL_PMD, which is > + * the case on a PAE kernel with PTI enabled. > */ > - vmalloc_sync_all(); > + if (!SHARED_KERNEL_PMD && boot_cpu_has(X86_FEATURE_PTI)) > + vmalloc_sync_all(); > +#endif I already submitted another fix for this quite some time ago: https://lore.kernel.org/lkml/20191009124418.8286-1-joro@xxxxxxxxxx/ Regards, Joerg
