[PATCH 4.9 16/92] x86/pti: Make unpoison of pgd for trusted boot work for real

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Dave Hansen commit 445b69e3b75e42362a5bdc13c8b8f61599e2228a upstream The inital fix for trusted boot and PTI potentially misses the pgd clearing if pud_alloc()

[PATCH 4.9 16/92] x86/pti: Make unpoison of pgd for trusted boot work for real

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Dave Hansen commit 445b69e3b75e42362a5bdc13c8b8f61599e2228a upstream The inital fix for trusted boot and PTI potentially misses the pgd clearing if pud_alloc() sets a PGD. It probably works