[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 1/2] xen: add LZ4 decompression support
>>> On 23.09.13 at 17:00, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote: > On Mon, 2013-09-23 at 15:54 +0100, Jan Beulich wrote: >> Add support for LZ4 decompression in Xen. LZ4 Decompression APIs for >> Xen are based on LZ4 implementation by Yann Collet. >> >> Benchmark Results(PATCH v3) >> Compiler: Linaro ARM gcc 4.6.2 >> >> 1. ARMv7, 1.5GHz based board >> [...] >> 2. ARMv7, 1.7GHz based board > > BTW Xen doesn't use these decompressors on ARM, the kernel self extracts > in guest context. I see you aren't adding this to the ARM build anyway, > just thought I'd explain ;-) Yeah, I just copied the Linux commit message mostly verbatim. >> Russell King said that we should have: >> >> - one decompressor which is the fastest >> - one decompressor for the highest compression ratio >> - one popular decompressor (eg conventional gzip) >> >> If we have a replacement one for one of these, then it should do exactly >> that: replace it. > > What a shame this logic doesn't apply to Xen's use too since we need to > support old kernels :-( And they didn't rip out the LZO one either... Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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