Bernhard Walle <bernhard at bwalle.de> writes: > Am 03.04.10 19:49, schrieb Eric W. Biederman: >> Not a problem. We require a lot of things of the kdump kernel, >> and it is immediately apparent in a basic sanity test. > > Also, in most cases (for example: distribution kernels), the kdump > kernel nowadays is identical to the running kernel. So, if the running > kernel has IOMMU support, the kdump kernel also has. I have been rather pleasantly surprised at how well that works. Although I am still glad I insisted that using the same kernel version not be a hard requirement. It allowed us to specify a good solid interface. How to cope with GART in that situation without having to manually specify iommu=off in the configuration I find a more compelling question. I expect I will have a look at that in the coming months if someone doesn't get there before I do. Eric
