Messages in this thread | | | From | Michael Ellerman <> | Subject | Re: [PATCH v3] powerpc/pseries/svm: Allocate SWIOTLB buffer anywhere in memory | Date | Thu, 17 Sep 2020 21:27:15 +1000 (AEST) |
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On Tue, 18 Aug 2020 19:11:26 -0300, Thiago Jung Bauermann wrote: > POWER secure guests (i.e., guests which use the Protection Execution > Facility) need to use SWIOTLB to be able to do I/O with the hypervisor, but > they don't need the SWIOTLB memory to be in low addresses since the > hypervisor doesn't have any addressing limitation. > > This solves a SWIOTLB initialization problem we are seeing in secure guests > with 128 GB of RAM: they are configured with 4 GB of crashkernel reserved > memory, which leaves no space for SWIOTLB in low addresses. > > [...]
Applied to powerpc/next.
[1/1] powerpc/pseries/svm: Allocate SWIOTLB buffer anywhere in memory https://git.kernel.org/powerpc/c/eae9eec476d13fad9af6da1f44a054ee02b7b161
cheers
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