Messages in this thread | | | Date | Thu, 14 Nov 2013 10:26:23 -0500 | From | Vivek Goyal <> | Subject | Re: [PATCH 0/3] Early use of boot service memory |
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On Wed, Nov 13, 2013 at 02:49:42PM -0800, H. Peter Anvin wrote:
[..] > In other words, allocating the crashkernel high has ALL the advantages, > plus a few more, and NONE of the disadvantages.
It allocates low memory for swiotlb. So that extra 72M allocation is the disadvantage. With so many virtual machines on a single host, I don't want to reserve extra 72MB on each virtual machine while I could easily do away with memory reservation below 4G.
So I do think that first trying memory below 896M, then below 4G and then above 4G makes sense and we should modify crashkernel=X to handle that.
Thanks Vivek
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