RE: [RFC] avoid indirect calls for DMA direct mappings v2
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- To: Christoph Hellwig <hch@xxxxxx>
- Subject: RE: [RFC] avoid indirect calls for DMA direct mappings v2
- From: "Luck, Tony" <tony.luck@xxxxxxxxx>
- Date: Tue, 11 Dec 2018 17:13:30 +0000
- Accept-language: en-US
- Cc: "iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx" <iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Jesper Dangaard Brouer <brouer@xxxxxxxxxx>, Tariq Toukan <tariqt@xxxxxxxxxxxx>, Ilias Apalodimas <ilias.apalodimas@xxxxxxxxxx>, Toke Høiland-Jørgensen <toke@xxxxxxx>, Robin Murphy <robin.murphy@xxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, "Yu, Fenghua" <fenghua.yu@xxxxxxxxx>, "Marek Szyprowski" <m.szyprowski@xxxxxxxxxxx>, "Busch, Keith" <keith.busch@xxxxxxxxx>, "Derrick, Jonathan" <jonathan.derrick@xxxxxxxxx>, "linux-pci@xxxxxxxxxxxxxxx" <linux-pci@xxxxxxxxxxxxxxx>, "linux-ia64@xxxxxxxxxxxxxxx" <linux-ia64@xxxxxxxxxxxxxxx>, "x86@xxxxxxxxxx" <x86@xxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>
- Dlp-product: dlpe-windows
- Dlp-reaction: no-action
- Dlp-version: 11.0.400.15
- References: <20181207190720.18517-1-hch@lst.de> <20181210215113.GA22180@agluck-desk> <20181211065112.GA13668@lst.de>
> But that might not be your fault. My ancient system is getting flaky. A v4.19 build that
> has booted before is also resetting :-(
After a power-cycle (and some time to let the machine cool off). System now boots
with your patch series plus the __phys_to_pfn() #define
So if you can figure the right way to fix that, you are good to go.
Tested-by: Tony Luck <tony.luck@xxxxxxxxx>
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