[PATCH Part2 v5 33/45] KVM: x86: Update page-fault trace to log full 64-bit error code

Brijesh Singh
2021-08-20T16:04:07Z

The #NPT error code is a 64-bit value but the trace prints only the
lower 32-bits. Some of the fault error code (e.g PFERR_GUEST_FINAL_MASK)
are available in the upper 32-bits.

Cc: <stable@kernel.org>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
---
arch/x86/kvm/trace.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index b484141ea15b..1c360e07856f 100644
--- a/arch/x86/kvm/trace.h
+++ b/arch/x86/kvm/trace.h
@@ -365,12 +365,12 @@ TRACE_EVENT(kvm_inj_exception,
* Tracepoint for page fault.
*/
TRACE_EVENT(kvm_page_fault,
- TP_PROTO(unsigned long fault_address, unsigned int error_code),
+ TP_PROTO(unsigned long fault_address, u64 error_code),
TP_ARGS(fault_address, error_code),

TP_STRUCT__entry(
__field( unsigned long, fault_address )
- __field( unsigned int, error_code )
+ __field( u64, error_code )
),

TP_fast_assign(
@@ -378,7 +378,7 @@ TRACE_EVENT(kvm_page_fault,
__entry->error_code = error_code;
),

- TP_printk("address %lx error_code %x",
+ TP_printk("address %lx error_code %llx",
__entry->fault_address, __entry->error_code)
);

--
2.17.1