diff options
Diffstat (limited to 'arch/ia64/kernel/setup.c')
| -rw-r--r-- | arch/ia64/kernel/setup.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c index 9891effcf4c3c..f05650c801d2a 100644 --- a/arch/ia64/kernel/setup.c +++ b/arch/ia64/kernel/setup.c @@ -646,6 +646,15 @@ cpu_init (void) ia64_set_kr(IA64_KR_FPU_OWNER, 0); /* + * Initialize the page-table base register to a global + * directory with all zeroes. This ensure that we can handle + * TLB-misses to user address-space even before we created the + * first user address-space. This may happen, e.g., due to + * aggressive use of lfetch.fault. + */ + ia64_set_kr(IA64_KR_PT_BASE, __pa(ia64_imva(empty_zero_page))); + + /* * Initialize default control register to defer all speculative faults. The * kernel MUST NOT depend on a particular setting of these bits (in other words, * the kernel must have recovery code for all speculative accesses). Turn on |