On Fri, Sep 07, 2018 at 06:05:23PM +0100, Ben Hutchings wrote: > On Tue, 2018-08-14 at 19:18 +0200, Greg Kroah-Hartman wrote: > > 4.4-stable review patch. If anyone has any objections, please let me know. > > > > ------------------ > > > > From: Dan Williams <dan.j.williams@xxxxxxxxx> > > > > commit 87744ab3832b83ba71b931f86f9cfdb000d07da5 upstream > > > > vm_insert_mixed() unlike vm_insert_pfn_prot() and vmf_insert_pfn_pmd(), > > fails to check the pgprot_t it uses for the mapping against the one > > recorded in the memtype tracking tree. Add the missing call to > > track_pfn_insert() to preclude cases where incompatible aliased mappings > > are established for a given physical address range. > [...] > > This apparently breaks a number of DRM drivers. The upstream fixes > are: > > 8ef4227615e1 x86/io: add interface to reserve io memtype for a resource range. (v1.1) > 7cf321d118a8 drm/drivers: add support for using the arch wc mapping API. > > They appear to apply cleanly to 4.4-stable. They are included in 4.9 > so no other stable branch needs them. Thanks, now queued up. greg k-h
