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Am 30.04.2015 um 19:45 schrieb Andrew Savchenko: |
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> Hi, |
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> |
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> On Thu, 30 Apr 2015 18:26:22 +0200 Volker Armin Hemmann wrote: |
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>> That simple. The kernel is too important and the people programming it |
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>> know what they are doing. Don't set anything. It is retarded. |
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>>> - I don't like invoking 'CFLAGS="-O2 -march=foo"make' |
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>>> - I don't want to set CFLAGS as a persistent environment variable. |
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>>> - I don't want to modify the kernel Makefile |
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>>> |
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>>> Does it actually make sense to set an optimization level and -march? |
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>> no |
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> While I completely agree with you that kernel CFLAGS should not be |
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> randomly tampered with, I can't agree that -march itself is useless. |
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> Tests and results are available here: |
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> https://github.com/graysky2/kernel_gcc_patch |
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> |
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> Optimization is a very powerful tool if taken with care. Of course |
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> it may lead to a disastrous result if mindlessly used. |
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> |
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> Best regards, |
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> Andrew Savchenko |
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|
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if your mail client or browser is miscompiled, it is crashy, but worst |
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case, a bunch of emails or bookmarks are lost. |
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If the kernel fucks up, it might write across partition boundaries and |
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destroy ALL your data. Or writes garbage instead of data. |
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Don't f* with the kernel. |
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