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virgl: use atomic operations when increase sub_ctx_id 

Use atomic operations to avoid competition. In addition,
since sub_ctx_id 0 has been used by default, sub_ctx_id
should start from 1.

Signed-off-by: Xin He <hexin.op@bytedance.com>
Reviewed-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9406>
This commit is contained in:
Xin He 2021-03-04 18:46:31 +08:00 committed by Marge Bot
parent 367a93830b
commit 97b196b921
1 changed files with 1 additions and 1 deletions
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2
src/gallium/drivers/virgl/virgl_context.c
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@ -1623,7 +1623,7 @@ struct pipe_context *virgl_context_create(struct pipe_screen *pscreen,
vctx->supports_staging = true;
}
vctx->hw_sub_ctx_id = rs->sub_ctx_id++;
vctx->hw_sub_ctx_id = p_atomic_inc_return(&rs->sub_ctx_id);
virgl_encoder_create_sub_ctx(vctx, vctx->hw_sub_ctx_id);
virgl_encoder_set_sub_ctx(vctx, vctx->hw_sub_ctx_id);