On 6/25/19 12:32, Christoph Hellwig wrote:
Thanks Frank. It seems like there is something odd going on with the zonelist on your system. Maybe there is not actual ZONE_DMA32, or something is messed with the numa node setup.
Do you suspect a firmware issue? Because the firmware of that machine is actually quite old (the model was retired in 2015): ``` *********************************************************** * ROM Version : 01.93 * ROM Date : Wed Sep 12 22:10:03 PDT 2012 *********************************************************** ``` ...but since HP has a different opinion about what is considered part of the hardware and hence should be "corrected" by the manufacturer in any case without asking for large amounts of money, I have no means to upgrade it.
Below is a band aid patch to
try theory number two above:
diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
index fcdb23e8d2fc..8e3f7b8bdb33 100644
--- a/kernel/dma/direct.c
+++ b/kernel/dma/direct.c
@@ -119,7 +119,7 @@ struct page *__dma_direct_alloc_pages(struct device *dev, size_t size,
}
}
if (!page)
- page = alloc_pages_node(dev_to_node(dev), gfp, page_order);
+ page = alloc_pages(gfp, page_order);
if (page && !dma_coherent_ok(dev, page_to_phys(page), size)) {
__free_pages(page, page_order);
Ok, will try that patch - actually (1) in addition or (2) without the first one?
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