Messages in this thread | | | Date | Fri, 1 Jul 2022 01:02:21 +0800 | Subject | Re: [PATCH 2/2] x86/ACPI: Set swiotlb area according to the number of lapic entry in MADT | From | Tianyu Lan <> |
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On 6/29/2022 10:04 PM, Christoph Hellwig wrote: > On Mon, Jun 27, 2022 at 11:31:50AM -0400, Tianyu Lan wrote: >> From: Tianyu Lan <Tianyu.Lan@microsoft.com> >> >> When initialize swiotlb bounce buffer, smp_init() has not been >> called and cpu number can not be got from num_online_cpus(). >> Use the number of lapic entry to set swiotlb area number and >> keep swiotlb area number equal to cpu number on the x86 platform. > > Can we reorder that initialization? Because I really hate having > to have an arch hook in every architecture.
How about using "flags" parameter of swiotlb_init() to pass area number or add new parameter for area number?
I just reposted patch 1 since there is just some coding style issue and area number may also set via swiotlb kernel parameter. We still need figure out a good solution to pass area number from architecture code.
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