Re: [PATCH v3 3/9] gpu: host1x: Add context device management code

From: Mikko Perttunen
Date: Wed Feb 23 2022 - 04:44:31 EST


On 2/22/22 18:24, Christoph Hellwig wrote:
On Fri, Feb 18, 2022 at 01:39:46PM +0200, Mikko Perttunen wrote:
+
+/*
+ * Due to an issue with T194 NVENC, only 38 bits can be used.
+ * Anyway, 256GiB of IOVA ought to be enough for anyone.
+ */
+static dma_addr_t context_device_dma_mask = DMA_BIT_MASK(38);

You need a mask per device. Please don't share the same variable
for multiple masks.

+EXPORT_SYMBOL(host1x_context_alloc);

All this low-level code really should be EXPORT_SYMBOL_GPL.

Thanks, will fix (and same for patch 2).

Mikko