This causes NMIs, #DB and #MC to be counted, rather than being reported as 0.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
---
CC: Jan Beulich <JBeulich@suse.com>
CC: Roger Pau Monné <roger.pau@citrix.com>
CC: Wei Liu <wl@xen.org>
---
 xen/arch/x86/x86_64/entry.S | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/xen/arch/x86/x86_64/entry.S b/xen/arch/x86/x86_64/entry.S
index d5998acf8806..3caa5654768d 100644
--- a/xen/arch/x86/x86_64/entry.S
+++ b/xen/arch/x86/x86_64/entry.S
@@ -1005,6 +1005,13 @@ handle_ist_exception:
 #endif
         movq  %rsp,%rdi
         movzbl UREGS_entry_vector(%rsp),%eax
+
+#ifdef CONFIG_PERF_COUNTERS
+        lea   per_cpu__perfcounters(%rip), %rcx
+        add   STACK_CPUINFO_FIELD(per_cpu_offset)(%r14), %rcx
+        incl  ASM_PERFC_exceptions * 4(%rcx, %rax, 4)
+#endif
+
         leaq  exception_table(%rip),%rdx
         mov   (%rdx, %rax, 8), %rdx
         INDIRECT_CALL %rdx
-- 
2.11.0

On 19.11.2021 19:21, Andrew Cooper wrote:
> This causes NMIs, #DB and #MC to be counted, rather than being reported as 0.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>

Reviewed-by: Jan Beulich <jbeulich@suse.com>