Messages in this thread | | | Date | Thu, 03 Oct 2013 15:46:50 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 3/7] x86, kaslr: find minimum safe relocation position |
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On 10/03/2013 03:43 PM, Kees Cook wrote: >> This is highly problematic. The standard protocol is to hoist the >> initramfs as high as possible in memory, so this may really unacceptably >> restrict the available range. > > Doesn't this depend on the boot loader's behavior?
It does, but the recommended (and *required* for compatibility with older kernels) behavior is to hoist as high as possible.
>> It would be better to treat these the same as reserved regions in the >> e820 map as far as the address space picking algorithm is concerned. > > Could this be considered a future optimization, or do you feel this is > required even for this first patch series landing?
Yes, I consider it required because of the above.
-hpa
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