1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/lguest/lguest.c b/drivers/lguest/lguest.c
index 1bc1546c7fd0..524beea7fb19 100644
--- a/drivers/lguest/lguest.c
+++ b/drivers/lguest/lguest.c
@@ -323,9 +323,12 @@ static void lguest_write_gdt_entry(struct desc_struct *dt,
  * __thread variables).  So we have a hypercall specifically for this case. */
 static void lguest_load_tls(struct thread_struct *t, unsigned int cpu)
 {
+        /* There's one problem which normal hardware doesn't have: the Host
+         * can't handle us removing entries we're currently using.  So we clear
+         * the GS register here: if it's needed it'll be reloaded anyway. */
+        loadsegment(gs, 0);
         lazy_hcall(LHCALL_LOAD_TLS, __pa(&t->tls_array), cpu, 0);
 }
-/*:*/
 
 /*G:038 That's enough excitement for now, back to ploughing through each of
  * the paravirt_ops (we're about 1/3 of the way through).
@@ -687,7 +690,8 @@ static struct clocksource lguest_clock = {
         .rating         = 400,
         .read           = lguest_clock_read,
         .mask           = CLOCKSOURCE_MASK(64),
-        .mult           = 1,
+        .mult           = 1 << 22,
+        .shift          = 22,
 };
 
 /* The "scheduler clock" is just our real clock, adjusted to start at zero */
@@ -770,7 +774,6 @@ static void lguest_time_init(void)
          * way, the "rating" is initialized so high that it's always chosen
          * over any other clocksource. */
         if (lguest_data.tsc_khz) {
-                lguest_clock.shift = 22;
                 lguest_clock.mult = clocksource_khz2mult(lguest_data.tsc_khz,
                                                          lguest_clock.shift);
                 lguest_clock.flags = CLOCK_SOURCE_IS_CONTINUOUS;