Hi, On Tue, Apr 17, 2018 at 06:01:30PM +0300, Aaro Koskinen wrote: > I'm getting early crash on x86_64 box with 4.17-rc1 and PTI > enabled. Bisected to: > > commit 39114b7a743e6759bab4d96b7d9651d44d17e3f9 > Author: Dave Hansen <dave.han...@linux.intel.com> > Date: Fri Apr 6 13:55:17 2018 -0700 > > x86/pti: Never implicitly clear _PAGE_GLOBAL for kernel image
[...] > [ 0.000000] Kernel/User page tables isolation: enabled > [ 0.000000] ------------[ cut here ]------------ > [ 0.000000] CPA: called for zero pte. vaddr = ffffffff8d000000 cpa->vaddr > = ffffffff8d000000 > [ 0.000000] WARNING: CPU: 0 PID: 0 at arch/x86/mm/pageattr.c:1189 > __cpa_process_fault+0x4d6/0x510 I started enabling more .config options, and it seems that enabling CONFIG_XEN_PV does some magic to make booting work... But I shouldn't need it. A.
