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[Xen-devel][PATCH 01/02] pvrdtscp: move the place of write_rdtscp_aux()
| To: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel][PATCH 01/02] pvrdtscp: move the place of write_rdtscp_aux() |
| From: | "Xu, Dongxiao" <dongxiao.xu@xxxxxxxxx> |
| Date: | Fri, 11 Dec 2009 19:53:37 +0800 |
| Accept-language: | en-US |
| Acceptlanguage: | en-US |
| Cc: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Delivery-date: | Fri, 11 Dec 2009 03:54:18 -0800 |
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| Thread-index: | Acp6WJLNsQ+sGRNTTBeC0g5pWtNd1g== |
| Thread-topic: | [Xen-devel][PATCH 01/02] pvrdtscp: move the place of write_rdtscp_aux() |
Pvrdtscp: move write_rdtscp_aux() to paravirt_ctxt_switch_to() - Currently write_rdtscp_aux() is placed in update_vcpu_system_time(), which is called by schedule() before context_switch(). This will break the HVM guest TSC_AUX state because at this point, MSR hasn't beed saved for HVM guests.So put the function in the point when a PV vcpu is really scheduled in. Signed-off-by: Dongxiao Xu <dongxiao.xu@xxxxxxxxx>
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