diff options
Diffstat (limited to 'arch/x86/kernel/setup_64.c')
| -rw-r--r-- | arch/x86/kernel/setup_64.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c index 6cbd15625dc..12948316e6a 100644 --- a/arch/x86/kernel/setup_64.c +++ b/arch/x86/kernel/setup_64.c @@ -310,6 +310,13 @@ void __init setup_arch(char **cmdline_p) * we are rounding upwards: */ end_pfn = e820_end_of_ram(); + /* update e820 for memory not covered by WB MTRRs */ + mtrr_bp_init(); + if (mtrr_trim_uncached_memory(end_pfn)) { + e820_register_active_regions(0, 0, -1UL); + end_pfn = e820_end_of_ram(); + } + num_physpages = end_pfn; check_efer(); |