Roger Pau Monné 5ff6c7f363 xen: temporary disable SMAP when forwarding hypercalls from user-space ... The Xen page-table walker used to resolve the virtual addresses in the hypercalls will refuse to access user-space pages when SMAP is enabled unless the AC flag in EFLAGS is set (just like normal hardware with SMAP support would do). Since privcmd allows forwarding hypercalls (and buffers) from user-space into Xen make sure SMAP is temporary disabled for the duration of the hypercall from user-space. Approved by: re (gjb) Sponsored by: Citrix Systems R&D		2018-09-13 07:15:02 +00:00
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privcmd.c	xen: temporary disable SMAP when forwarding hypercalls from user-space	2018-09-13 07:15:02 +00:00