On 04/17/2010 09:48 PM, Avi Kivity wrote:
+static u64 last_value = 0;
Needs to be atomic64_t.
+
cycle_t pvclock_clocksource_read(struct pvclock_vcpu_time_info *src)
{
struct pvclock_shadow_time shadow;
unsigned version;
cycle_t ret, offset;
+ u64 last;
+ do {
+ last = last_value;
Otherwise, this assignment can see a partial update.
On a 32-bit guest, that is.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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