On Tue, Mar 13, 2018 at 06:59:45PM +0100, Laurent Dufour wrote: > When dealing with the speculative fault path we should use the VMA's field > cached value stored in the vm_fault structure. > > Currently vm_normal_page() is using the pointer to the VMA to fetch the > vm_flags value. This patch provides a new __vm_normal_page() which is > receiving the vm_flags flags value as parameter. > > Note: The speculative path is turned on for architecture providing support > for special PTE flag. So only the first block of vm_normal_page is used > during the speculative path. Might be a good idea to explicitly have SPECULATIVE Kconfig option depends on ARCH_PTE_SPECIAL and a comment for !HAVE_PTE_SPECIAL in the function explaining that speculative page fault should never reach that point. Cheers, Jérôme
