Jerone Young wrote:
This patch fixes kvmtrace use on big endian systems. When using bit fields the
compiler will lay data out in the wrong order expected when laid down into a
file. This fixes it by using one variable instead of using bit fields.
Signed-off-by: Jerone Young <[EMAIL PROTECTED]>
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -311,9 +311,13 @@ struct kvm_s390_interrupt {
/* This structure represents a single trace buffer record. */
struct kvm_trace_rec {
- __u32 event:28;
- __u32 extra_u32:3;
- __u32 cycle_in:1;
+ /* variable rec_val
+ * is split into:
+ * bits 0 - 27 -> event id
+ * bits 28 -30 -> number of extra data args of size u32
+ * bits 31 -> binary indicator for if tsc is in record
+ */
+ __u32 rec_val;
Please use #defines for shifts and masks instead of open-coding. These
#defines would be part of the public interface.
--
Do not meddle in the internals of kernels, for they are subtle and quick to
panic.
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