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Even though all rendering should have been flushed at the end of the previous requests, add an extra flush after switching to the kernel_context. As the switch to the kernel_context is used when idling the gpu (e.g. suspend), having an extra layer of paranoia to ensure everything is flushed to memory seems sensible. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171126214856.23702-1-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>