Hi Vitaly:
Thanks for your review.
On 6/10/2021 5:47 PM, Vitaly Kuznetsov wrote:
diff --git a/arch/x86/include/asm/hyperv-tlfs.h
b/arch/x86/include/asm/hyperv-tlfs.h
index 606f5cc579b2..632281b91b44 100644
--- a/arch/x86/include/asm/hyperv-tlfs.h
+++ b/arch/x86/include/asm/hyperv-tlfs.h
@@ -262,6 +262,17 @@ enum hv_isolation_type {
#define HV_X64_MSR_TIME_REF_COUNT HV_REGISTER_TIME_REF_COUNT
#define HV_X64_MSR_REFERENCE_TSC HV_REGISTER_REFERENCE_TSC
+/* Hyper-V GPA map flags */
+#define HV_MAP_GPA_PERMISSIONS_NONE 0x0
+#define HV_MAP_GPA_READABLE 0x1
+#define HV_MAP_GPA_WRITABLE 0x2
+
+enum vmbus_page_visibility {
+ VMBUS_PAGE_NOT_VISIBLE = 0,
+ VMBUS_PAGE_VISIBLE_READ_ONLY = 1,
+ VMBUS_PAGE_VISIBLE_READ_WRITE = 3
+};
+
Why do we need both flags and the enum? I don't see HV_MAP_GPA_* being
used anywhere and VMBUS_PAGE_VISIBLE_READ_WRITE looks like
HV_MAP_GPA_READABLE | HV_MAP_GPA_WRITABLE.
As this is used to communicate with the host, I'd suggest to avoid using
enum and just use flags everywhere.
Nice catch. Will update in the next version.
Thanks.
