tree 715ee9d5fc7b8b1ef805c68989d4c2351d99c689
parent ae3b9410d7ea4ed6188b3bb9efafd3880891211f
author Michal Hocko <mhocko@suse.cz> 1530114410 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1534347447 +0200

x86/speculation/l1tf: Fix up pte->pfn conversion for PAE

commit e14d7dfb41f5807a0c1c26a13f2b8ef16af24935 upstream.

Jan has noticed that pte_pfn and co. resp. pfn_pte are incorrect for
CONFIG_PAE because phys_addr_t is wider than unsigned long and so the
pte_val reps. shift left would get truncated. Fix this up by using proper
types.

Fixes: 6b28baca9b1f ("x86/speculation/l1tf: Protect PROT_NONE PTEs against speculation")
Reported-by: Jan Beulich <JBeulich@suse.com>
Signed-off-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>