diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-26 05:33:09 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-26 05:33:09 -0300 |
| commit | 4a327fcef90ba27150a3e8741441b68c605ae248 (patch) | |
| tree | dedef84cccbd02054df4cfb844dd3c9d588edf83 /arch/x86/kernel/tsc.c | |
| parent | a156245300d5362a3b4c4afdace9e2b90169fe43 (diff) | |
Add TuxOnIce support adapted for the 4.5-gnu kernel versionpck-4.5-gnu
Diffstat (limited to 'arch/x86/kernel/tsc.c')
| -rw-r--r-- | arch/x86/kernel/tsc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index 3d743da82..4b20bb75b 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -12,6 +12,7 @@ #include <linux/percpu.h> #include <linux/timex.h> #include <linux/static_key.h> +#include <linux/mm.h> #include <asm/hpet.h> #include <asm/timer.h> @@ -195,6 +196,10 @@ static void cyc2ns_init(int cpu) c2n->head = c2n->data; c2n->tail = c2n->data; + + // Don't let TuxOnIce make data RO - a secondary CPU will cause a triple fault + // if it loads microcode, which then does a printk, which may end up invoking cycles_2_ns + SetPageTOI_Untracked(virt_to_page(c2n)); } static inline unsigned long long cycles_2_ns(unsigned long long cyc) |