arm64: its: Handle its command queue wrapping
Because micro-bench may send a large number of ITS commands, we
should handle ITS command queue wrapping as kernel instead of just
failing the test.
Signed-off-by: Jingyi Wang <wangjingyi11@huawei.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/lib/arm64/gic-v3-its-cmd.c b/lib/arm64/gic-v3-its-cmd.c
index 2c208d1..34574f7 100644
--- a/lib/arm64/gic-v3-its-cmd.c
+++ b/lib/arm64/gic-v3-its-cmd.c
@@ -164,8 +164,9 @@
{
struct its_cmd_block *cmd;
- assert((u64)its_data.cmd_write < (u64)its_data.cmd_base + SZ_64K);
cmd = its_data.cmd_write++;
+ if ((u64)its_data.cmd_write == (u64)its_data.cmd_base + SZ_64K)
+ its_data.cmd_write = its_data.cmd_base;
return cmd;
}
