From: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
Because vMMIO region needs to be shared region, guest TD may explicitly
convert such region from private to shared. Don't complain such
conversion.
Signed-off-by: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
Signed-off-by: Xiaoyao Li <xiaoyao.li@xxxxxxxxx>
---
accel/kvm/kvm-all.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index fceec7f2a83f..9d0aa8c97feb 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -3094,8 +3094,24 @@ static int kvm_convert_memory(hwaddr start, hwaddr size, bool to_private)
*/
ram_block_convert_range(rb, offset, size, to_private);
} else {
- warn_report("Convert non guest-memfd backed memory region (0x%"HWADDR_PRIx" ,+ 0x%"HWADDR_PRIx") to %s",
- start, size, to_private ? "private" : "shared");
+ MemoryRegion *mr = section.mr;
+
+ /*
+ * Because vMMIO region must be shared, guest TD may convert vMMIO
+ * region to shared explicitly. Don't complain such case. See
+ * memory_region_type() for checking if the region is MMIO region.
+ */
+ if (to_private ||
+ memory_region_is_ram(mr) ||
+ memory_region_is_ram_device(mr) ||
+ memory_region_is_rom(mr) ||
+ memory_region_is_romd(mr)) {
+ warn_report("Convert non guest-memfd backed memory region (0x%"HWADDR_PRIx" ,+ 0x%"HWADDR_PRIx") of %s to %s",
+ start, size, mr->name, to_private ? "private" : "shared");
+ } else {
+ ret = 0;
+ }
+
}
memory_region_unref(section.mr);
--
2.34.1
