From: Tamas K Lengyel <tamas.leng...@intel.com>
Add pt_offset field to x86 regs in vm_event. Initialized to ~0 if PT
is not in use.
Signed-off-by: Tamas K Lengyel <tamas.leng...@intel.com>
Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
---
CC: Jan Beulich <jbeul...@suse.com>
CC: Roger Pau Monné <roger....@citrix.com>
CC: Wei Liu <w...@xen.org>
CC: Jun Nakajima <jun.nakaj...@intel.com>
CC: Kevin Tian <kevin.t...@intel.com>
CC: Michał Leszczyński <michal.leszczyn...@cert.pl>
CC: Tamas K Lengyel <ta...@tklengyel.com>
v7:
* New
---
xen/arch/x86/vm_event.c | 3 +++
xen/include/public/vm_event.h | 6 ++++++
2 files changed, 9 insertions(+)
diff --git a/xen/arch/x86/vm_event.c b/xen/arch/x86/vm_event.c
index 848d69c1b0..09dfc0924e 100644
--- a/xen/arch/x86/vm_event.c
+++ b/xen/arch/x86/vm_event.c
@@ -251,6 +251,9 @@ void vm_event_fill_regs(vm_event_request_t *req)
req->data.regs.x86.shadow_gs = ctxt.shadow_gs;
req->data.regs.x86.dr6 = ctxt.dr6;
+
+ if ( hvm_vmtrace_output_position(curr, &req->data.regs.x86.pt_offset) != 1
)
+ req->data.regs.x86.pt_offset = ~0;
#endif
}
diff --git a/xen/include/public/vm_event.h b/xen/include/public/vm_event.h
index 141ea024a3..57f34bf902 100644
--- a/xen/include/public/vm_event.h
+++ b/xen/include/public/vm_event.h
@@ -223,6 +223,12 @@ struct vm_event_regs_x86 {
*/
uint64_t npt_base;
+ /*
+ * Current offset in the Processor Trace buffer. For Intel Processor Trace
+ * this is MSR_RTIT_OUTPUT_MASK. Set to ~0 if no Processor Trace is active.
+ */
+ uint64_t pt_offset;
+
uint32_t cs_base;
uint32_t ss_base;
uint32_t ds_base;
--
2.11.0
